PRELIM · FEATHERWEIGHT · 3 ROUNDSUFC Fight Night: Silva vs. Delgado
Jessie Rosas — Featherweight fighter

Jessie Rosas

“Tachidito”
8W1L
Submission Grappler
…
VS
Sean King III — Featherweight fighter

Sean King III

“The King of New Orleans”
6W0L
Long-Range Finisher
…

Four submissions and a fifth-round title finish against four and a half inches and a natural 145

FeatherweightDesert Diamond Arena, Glendale, Arizona, United StatesSeptember 12, 2026Standard 30ft Octagon
01

The Frame

What this fight is really about — and the measurements that shape it

The Analyst's Take

The lowest-data fight on this card, and it is not close. Jessie "Tachidito" Rosas and Sean "The King of New Orleans" King are both making their UFC debuts, which means there is not one significant strike, one takedown attempt or one second of control time under either name in any official database. Every number on this page comes from two verified regional logs — nine bouts for Rosas, six for King — and nothing else. Those logs are clear enough. Rosas, 8-1, is a submission fighter: four of his eight wins are chokes or joint locks across three distinct techniques, five of his eight wins ended in Round 1, and his most recent win is an arm triangle at 3:50 of Round 5 in a UWC Mexico title fight — championship-round evidence almost no debutant carries. King, 6-0, is the bigger and far more active man: 6'0" at featherweight against a 5'7.5" fighter the UFC's own athlete page still lists at 135 pounds, six professional fights in seventeen months, four of them in the last thirteen, three finishes and two full-distance decisions. The fight reduces to two questions — can Rosas, giving up four and a half inches and a natural weight class, get this to the floor where his entire case lives, and does King's clean sheet survive the first genuine submission specialist he has faced? The tiebreaker is context: Rosas arrives after the most chaotic year on the card, signed in July, pulled from an August 8 debut hours before the early weigh-ins when a UFC physician refused to clear a forehead wound, released, then re-signed for this. King fought on July 24. Model: King 55% / Rosas 45%, conviction 3/10.

Jessie Rosas
Attribute
Sean King III
23
Age
22
5'7.5" (67.5")
Height
+4.5" King6'0" (72")
68"
Reach
Not published
39"
Leg Reach
Not published
Southpaw
Stance
Orthodox
UFC.com lists him at 135 lbs — bout contracted at 145
Listed Weight
145 lbs — natural featherweight
September 12, 2026 — this fight
Octagon Debut
September 12, 2026 — this fight
Submission grappler, BJJ purple belt, top-position finisher
Fighting Style
Long-range striker who breaks opponents down late in rounds

Four and a half inches, and a division. King is 6'0" at featherweight and has never campaigned anywhere else; Rosas is 5'7.5" and the UFC's own athlete page still carries him at 135 pounds, with his aborted August debut booked against a bantamweight. That is the largest structural asymmetry in the bout and the primary driver of the lean. King's reach is unpublished by every source we can reach, so nothing is claimed about it here — but a 6'0" frame at 145 is long by definition, and the height gap alone dictates who jabs and who has to close. Rosas being a southpaw offsets some of the geometry: open-stance against an orthodox opponent puts his rear straight and his level change on the same line, and the level change is the shot that decides this fight. His 39-inch leg reach is short even for his height, which reinforces the picture — he is built to get inside, not to fence at range.

Venue Factor
Noche UFC weekend in Glendale, on Mexican Independence Day weekend, for a fighter who represents Mexico and whose brother is a ranked UFC bantamweight: that crowd is loud, it is early, and it belongs entirely to Rosas. It is worth real adrenaline in the opening five minutes — which happens to be the window in which five of his eight career wins have landed — and nothing at all in minute twelve.
02

The Fighters

Careers, chins, schedules — and the form they bring into the cage

Jessie Rosas, UFC featherweight debutant

Jessie Rosas

Pro Record
8-1-0
UFC Record
0-0 — Octagon debut
Streak
Three straight wins since August 2024
Finish Rate
75% (6 of 8 wins) — 2 KO/TKO, 4 submissions, 1 decision, 1 DQ
Avg Fight Time
~5:40 career (estimated) · no UFC cage time
Chin · Untested at UFC levelSOS · Regional — UWC Mexico, Fury FC, A1 Combat, 559 FightsSubmission grappler / top-position finisher

The finisher with a broken year. Rosas turned professional in June 2022 and won his first four fights inside two rounds, three of them by submission in under three and a half minutes — an armbar, a triangle armbar and an anaconda choke, all in Round 1. In March 2024 he met Keenan Lewis at Urijah Faber's A1 Combat 19 and was choked out in 1:55, the only loss of his career and the only time he has been finished. He answered with a unanimous decision over Kaleb Petereit, a first-round TKO of Luciano Ramos, and then the best win on his record: an arm-triangle submission of Erick Ruano at 3:50 of Round 5 to take a UWC Mexico title on June 7, 2026. Then the year turned. He was signed as a late addition to UFC Vegas 120 in July 2026 for an August 8 debut against Miles Johns, was pulled hours before the early weigh-ins when a UFC physician refused to clear a wound on his forehead, and was released roughly two weeks after signing without ever entering the Octagon. He was re-signed for Noche UFC. That sequence — signed, pulled, cut, re-signed, inside five weeks — appears on no stat sheet and is the single largest unpriced variable in this fight.

Sean King III — no published headshot; UFC.com silhouette placeholder

Sean King III

Pro Record
6-0-0
UFC Record
0-0 — Octagon debut
Streak
6-0 — has never lost
Finish Rate
67% (4 of 6 wins) — 3 KO/TKO, 1 submission, 2 decisions
Avg Fight Time
~8:50 career (estimated) · no UFC cage time
Chin · Untested — never been finishedSOS · Regional — four straight Fury Fighting Championship winsLong-range striker / accumulation finisher

The metronome. King's first professional fight was April 11, 2025 — a thirty-two-second knockout of Angel Martinez at Empire FC 30. Seventeen months later he is 6-0 with a UFC contract, having gone through Fury Fighting Championship four consecutive times: unanimous decisions over Christian Hightower (July 2025) and Tony Toro (November 2025), a Round-1 TKO of Dumar Roa at 4:54 (February 2026), an arm-triangle submission of Cristian Lopez at 1:40 of Round 2 (April 2026), and a Round-2 TKO of Dimitre Ivy at 4:09 on July 24, 2026 — seven weeks before this fight. The finishing timestamps are the tell: 0:32, 4:54, 1:40 of Round 2 and 4:09 of Round 2. One flash knockout and three finishes that arrive late in a round. This is a fighter who breaks people down over four or five minutes rather than a first-exchange bomber, and it means the clock runs in his favour, not against him.

Jessie Rosas
0 dealt · 0 absorbed
Knockdown Exchange
KD dealt vs absorbed
Sean King III
0 dealt · 0 absorbed

Jessie Rosassignature weapons

Submission VarietyArmbar (Bañuelos R1 3:16), triangle armbar (Quero R1 1:27), anaconda choke (McGurk R1 1:25), arm triangle (Ruano R5 3:50) — three distinct techniques, not a one-trick choke hunter
×4
Round-1 FinishFive of his eight wins ended in the opening round, the fastest a twelve-second knockout of Raymond Smith at Bear River FC 16
×5

Sean King IIIsignature weapons

Late-Round StoppageRoa at 4:54 of R1, Ivy at 4:09 of R2, Martinez at 0:32 of R1 — three knockouts, two of them arriving in the closing minute of a round after sustained pressure
×3
Arm TriangleCristian Lopez at 1:40 of Round 2 — a top-position, pressure-passing finish that proves he can hurt people on the mat as well as off it
×1

Jessie Rosas

W
Erick Ruano
Submission — Arm Triangle
RR5 (3:50)
UWC Mexico 58 — Jun 7, 2026
W
Luciano Ramos
KO/TKO
RR1 (2:38)
559 Fights 118 — Oct 19, 2025
W
Kaleb Petereit
Decision — Unanimous
RR3
Fury FC 95 — Aug 2, 2024
L
Keenan Lewis
Submission — Rear-Naked Choke
RR1 (1:55)
A1 Combat 19 — Mar 29, 2024
W
Adam McGurk
Submission — Anaconda Choke
RR1 (1:25)
Force of One MMA 10 — Apr 29, 2023
Pattern

Three straight wins, and an unusually broad sample for nine professional fights: a fifth-round title finish, a first-round knockout, a fifteen-minute decision. He has proven he can finish early, finish late and win on the cards. What he has not proven is that he can do any of it against UFC-calibre opposition — and the calendar is thin. One bout in the last thirteen months, with the August withdrawal, release and re-signing sitting between that fight and this one.

Sean King III

W
Dimitre Ivy
KO/TKO
RR2 (4:09)
Fury FC 122 — Jul 24, 2026
W
Cristian Lopez
Submission — Arm Triangle
RR2 (1:40)
Fury FC 118 — Apr 12, 2026
W
Dumar Roa
KO/TKO
RR1 (4:54)
Fury FC 115 — Feb 6, 2026
W
Tony Toro
Decision — Unanimous
RR3
Fury FC 111 — Nov 9, 2025
W
Christian Hightower
Decision — Unanimous
RR3
Fury FC 106 — Jul 18, 2025
Pattern

Five fights in twelve months, all wins, with escalating quality: two decisions, then three consecutive finishes by three different methods. The most active fighter on this prelim card and the sharpest. Two of the five went the full fifteen minutes, which is more distance evidence than most six-fight prospects own, and the most recent bout was seven weeks ago.

Jessie Rosas

Win Methods
Wins by Round

Sean King III

Win Methods
Wins by Round
Critical Insight
Both donuts are career-scoped and both close exactly — Rosas's 4 submissions plus 2 knockouts plus 1 decision plus 1 disqualification is his 8 wins, King's 3 plus 2 plus 1 is his 6 — and they describe two different fighters entirely. Half of everything Rosas has ever won came by submission, across three distinct techniques, and five of his eight wins ended in the opening round. King's spread is the flatter one: half by knockout, a third on the cards, one submission. The round columns matter more than the method columns here. Rosas's R4+ bar is a single bout, but it is the most interesting bar on the page — an arm triangle at 3:50 of Round 5 in a title fight three months ago, the only championship-round evidence in this matchup. King's mass sits in Rounds 1 and 2 and in the decision column, and his stoppage timestamps (0:32, 4:54, 1:40 of R2, 4:09 of R2) say the same thing three different ways: he finishes people late in rounds, not early.

Common Opponents

OpponentJessieSean
Keenan Lewis (the one finish against Rosas)L· Submission (RNC) R1 1:55 — A1 Combat 19, Mar 2024—never faced
The only time Rosas has been finished in nine professional fights, and it was a choke inside two minutes. His chin has never been the problem; his neck has
Fury Fighting Championship (shared promotion, never met)W· Decision over Kaleb Petereit — Fury FC 95, Aug 20244-0 — Hightower, Toro, Roa, Lopez, Ivy across Fury FC 106-122
Both men passed through the same Texas promotion, Rosas once and King four times, but they never shared a card and their complete logs contain no common opponent
The arm triangle (shared finishing hold)W· Arm triangle R5 3:50 to win a UWC Mexico title, Jun 2026W· Arm triangle R2 1:40 over Cristian Lopez, Apr 2026
Both men's best submission is the same top-position hold, which means King is not a striker who happens to own a sub — he has finished someone from exactly the position Rosas has to reach
03

The Numbers

Composites, division ranks and round-by-round evidence

Striking

Career-derived — no UFC rate line exists for either fighter

0
Jessiesmall sample
0
Seansmall sample

There is no SLpM, no accuracy and no defence figure for either man, so this gauge is built from the verified logs and the physical sheet instead. King takes it on three grounds: four and a half inches of height at a weight class that is natively his, half his wins by knockout, and two of his three stoppages arriving from sustained pressure late in a round rather than a single lucky shot. Rosas's two knockouts are real — Ramos at 2:38 and a twelve-second finish of Raymond Smith — but his striking is a means of entry, not the case for his victory.

Grappling

Career-derived — no UFC takedown or submission rates exist

0
Jessiesmall sample
0
Seansmall sample

The widest gap on the page and the whole reason this is 55/45 rather than something steeper. Four submissions across three distinct techniques, a BJJ purple belt, a fifth-round arm triangle in a title fight, and a Las Vegas camp built around one of the division's better young grapplers. King's counterpoint is not nothing — he owns an arm triangle of his own from top position — but one submission against four, from a fighter with no published takedown-defence sample of any kind, is a clear edge for Rosas wherever this fight touches the floor.

Technical

(Striking + Grappling) / 2

0
Jessie
0.0
Sean

Rosas edges the pure-skill column. He is the better grappler by a wider margin than King is the better striker. That is exactly why the physical and contextual columns have to carry the model.

Cardio

Fight time · rounds reached · recent activity

0
Jessiesmall sample
0
Seansmall sample

Closer than it looks in either direction. Rosas owns the single deepest data point in the fight — he was still finishing people at 3:50 of Round 5, ninety days ago — and that is genuine championship-round evidence King cannot match. But King has been to fifteen minutes twice inside the last thirteen months and has fought four times in that window; Rosas has fought once, and enters off a five-week sequence of signing, withdrawal, release and re-signing. Recent, repeated, competitive minutes score above one deep night from three months ago.

Overall

(Technical + Cardio) / 2

0
Jessie
0.0
Sean

A dead heat by design — 61.0 against 61.75. The ratings do not produce the lean. The size gap, the weight-class question and the activity gap do, and all three sit outside this gauge.

MetricJessieSean
Avg Fight Time~5:40 career (est.) · no UFC time~8:50 career (est.) · no UFC time
Pace TierNot found — no UFC boutssmall sampleNot found — no UFC boutssmall sample
R3/R1 OutputNo round-by-round row in either databasesmall sampleNo round-by-round row in either databasesmall sample
Deepest Round ReachedRound 5 — arm triangle at 3:50 (Jun 2026)Round 3 — two full fifteen-minute decisions
Fights in Last 13 Months14 — most recent seven weeks ago

Archetype Base Rate

Submission Grappler 45%55% Long-Range Striker

No archetype base-rate row exists for either fighter · No historical archetype win rate is applied here — neither man has an archetype profile in the database, and neither has fought in the UFC. The 55/45 line is built from three things the logs do support: four and a half inches of height and a natural weight class against a fighter the UFC lists at 135; four fights in thirteen months against one; and a finishing profile that arrives late in rounds against a smaller man moving up. It is then capped by Rosas's four submissions across three techniques, his Round-5 title finish, and a Glendale crowd on Noche UFC weekend that belongs to him entirely.

Jessie RosasSean King III

Featherweight

· 47 fighters
StatJessieJessie rankDiv avgSean rankSean
SLpMNot found — no UFC bouts—~4.57—Not found — no UFC bouts
Str AccNot found—~49.2%—Not found
Str DefNot found—~54.0%—Not found
SApMNot found—~4.08—Not found
TD/15Not found—~1.58—Not found
TD DefNot found—~64%—Not found
Sub/15Not found — 4 career submissions—~0.52—Not found — 1 career submission
Pro Record8-1-0———6-0-0
Finish Rate75% (6 of 8)———67% (4 of 6)
Times Finished1 — submission———0
Height67.5"—~69"—72"
Avg Fight Time~5:40 career (est.)———~8:50 career (est.)
Statistical Verdict
The top half of this table is empty on purpose. Two Octagon debutants generate no official rate data, and nothing here is modelled to fill the gap — there is no SLpM to compare against 4.57, no takedown defence to compare against 64%, and no honest way to invent either. The bottom half is the entire evidentiary basis for the projection, and it splits cleanly. Rosas owns the finishing résumé, the deeper log and the mat: 75% finish rate, four submissions, nine professional fights, a Round-5 title finish. King owns the frame, the activity and the clean sheet: four and a half inches, a natural 145, four fights in the last thirteen months, and zero career losses. The one row that cuts against Rosas hardest is Times Finished — he has been submitted, in 1:55, and King has never been anything.

Significant Strikes Landed per Round

⚠ R1, R2, R3: single-fight sample for Jessie Rosas

⚠ R1, R2, R3: single-fight sample for Sean King III

Control Time per Round (sec)

Jessie Rosas

  • No round-by-round row exists for Rosas in any database, and at 0-0 in the Octagon there is nothing to build one from. What the verified nine-bout log shows instead: five of his eight wins ended in Round 1 — Ramos KO 2:38, Bañuelos armbar 3:16, Quero triangle armbar 1:27, McGurk anaconda 1:25, Raymond Smith KO 0:12.
  • The outlier is the most important fight on his record. On June 7, 2026 he won a UWC Mexico title by arm triangle at 3:50 of Round 5 — the only championship-round evidence in this matchup, and a data point almost no UFC debutant carries.
  • His single loss is also his single finish against: a rear-naked choke at 1:55 of Round 1 to Keenan Lewis in March 2024. He has never been knocked out, dropped or stopped by strikes in nine professional fights.

Sean King III

  • No round-by-round row exists for King either. His entire professional career is six regional bouts, four of them in Fury Fighting Championship, and none of it is in any UFC database.
  • The career log is unambiguous where the databases are silent: his stoppages land at 0:32 of Round 1, 4:54 of Round 1, 1:40 of Round 2 and 4:09 of Round 2. Three of his four finishes arrive in the closing stretch of a round, which is the signature of an accumulation fighter rather than a first-exchange finisher.
  • He has two complete fifteen-minute wins — Christian Hightower in July 2025 and Tony Toro in November 2025 — and has never been past Round 3.
Critical Insight
Both charts are empty, and the shape of the fight has to be read from the timestamps instead. Rosas's win equity is front-loaded: five of his eight wins ended in the first five minutes, three by submission inside 3:16, and the Glendale crowd is loudest in exactly that window. King's is the opposite — his knockouts arrive at 4:54 and 4:09, his submission at 1:40 of Round 2, and both of his decisions went the full fifteen. Every minute after the first five belongs to the bigger, more active man, unless Rosas has already found a grip.

Strike Targeting (career avg)

No UFC strike-target data for either fighter — nothing is estimated.

Head hunting vs body work vs leg attack — the shape of the damage. Fighters without UFC samples are omitted rather than shown as 0%.

Range Profile — where the minutes go

Jessie · N/ASean · N/A

No UFC range-share data for either fighter — nothing is estimated.

Share of significant-strike volume by range from UFC career data. Debutants / fighters without Octagon samples show as N/A.

04

The Story of the Fight

Advantages, worst cases, gameplans — and the patterns underneath

Where the fight lives

Who owns each phase — and by how much
Open SpaceSean owns it

Four and a half inches of height at a natural 145 against a fighter the UFC lists at 135, with no published reach figure claimed either way

Pocket / ExchangesSean owns it

Three knockouts against two, and King's arrive late in rounds — but Rosas is a southpaw with a twelve-second knockout on his log and has never been stopped by strikes

ClinchJessie owns it

Where four and a half inches stops mattering and Rosas's route to the level change begins; King has no published clinch or takedown-defence sample of any kind

GroundJessie owns it

Four submissions from three techniques and a Round-5 arm triangle against one arm triangle — but King owning that same hold makes the scramble a two-way threat

Path to Victory

Jessie Rosas

Close four and a half inches on the southpaw angle, land the level change, and find one of four submissions against a takedown defence nobody has ever sampled.

Why they win
01
Four submissions from three techniques

Armbar, triangle armbar, anaconda choke and arm triangle — half of everything he has ever won came by tapping someone out, and no two of them the same way.

02
Championship-round proof

An arm triangle at 3:50 of Round 5 to win a UWC Mexico title, ninety days ago. Nobody else on this prelim card has been that deep, let alone finished someone there.

03
Southpaw against an unlisted stance

Open-stance geometry puts his rear straight and his lead-side level change on the same line, against an opponent whose stance no source publishes.

04
A Glendale crowd that belongs to him

Noche UFC on Mexican Independence Day weekend, a fighter representing Mexico, and a brother who is a ranked UFC bantamweight. Worth real adrenaline in the exact five minutes where his equity lives.

05
The higher-level camp

He trains in Las Vegas alongside Raul Rosas Jr., against an opponent whose entire career has been Louisiana and Texas regional promotions.

06
The deeper log

Nine professional fights against six, and the only man in the cage who has been beaten, learned from it, and won three straight since.

The gameplan
  1. 1
    Get inside immediately

    Every minute spent at King's range is a minute spent losing the fight. There is no version of this where Rosas wins a kickboxing match at four and a half inches down.

  2. 2
    Level change off the straight left

    The entry is the whole fight. The shot has to be disguised by strikes, not telegraphed off a walk-forward, because a stuffed shot against the fence is how this gets lost.

  3. 3
    Pass to the arm triangle

    It is his best hold and he finished a five-round title fight with it three months ago. King's takedown defence has never been sampled by anyone.

  4. 4
    Attack the legs

    A 39-inch leg reach is short, but a 6'0" opponent's calves are not. Bringing the frame down is the cheapest way to shrink four and a half inches.

  5. 5
    Take him deep if the finish is not there

    Rosas has been to Round 5 inside the last ninety days. King has never seen minute sixteen. Fatigue is a slower weapon but it is a real one.

  6. 6
    Contingency — if Plan A fails

    If the takedown is not landing by mid-Round 2, stop selling out for it. Chasing a grip he cannot get is the single fastest route to a 30-27 against him.

Path to Victory

Sean King III

Fight tall for fifteen minutes. Every minute the fight stays standing is a minute the bigger, more active, natural featherweight is winning it.

Why they win
01
Four and a half inches and a natural weight class

6'0" at 145 against a fighter the UFC's own athlete page lists at 135 pounds. The largest clean physical edge in the bout and the primary driver of the lean.

02
Undefeated and never finished

6-0 with zero stoppage losses. No damage, no losing habits, nothing to unlearn — against a man who has already been choked out once.

03
Four fights in thirteen months

July, April and February of 2026 plus November 2025, against Rosas's single bout in the same window. He is the sharper fighter by a wide margin.

04
An arm triangle of his own

He finished Cristian Lopez from top position in April. He is not a striker who happens to own a submission — he has ended a fight from exactly the place Rosas needs to get to.

05
Two complete fifteen-minute wins

More distance evidence than most six-fight prospects carry, and enough to make the decision path a genuinely live one rather than a fallback.

06
A clean camp

No withdrawal, no release, no re-signing. He is the only one of the two who has had an ordinary eight weeks.

The gameplan
  1. 1
    Fight tall and long

    Jab, straight, front kick. Make Rosas cover four and a half inches in every single exchange, and never give him a stationary target to shoot on.

  2. 2
    Sprawl and separate — do not scramble

    Rosas's entire game is what happens after the tie-up. The safest ground is the ground King never touches, and standing back up fast beats winning the scramble.

  3. 3
    Attack the body

    His finishes are accumulation finishes, and a smaller man moving up a division is the ideal body-shot target. It also slows the level change.

  4. 4
    Be patient into Round 2

    Three of his four finishes came late in a round. There is no reason to force anything in the first three minutes, and every reason not to while the crowd is loudest.

  5. 5
    Keep his own arm triangle live

    If a scramble goes badly, it is a submission he has already finished someone with — and Rosas has been choked out before.

  6. 6
    Contingency — if Plan A fails

    If he is taken down twice in Round 1, abandon the finish, work back to the feet, and win on volume and rounds. He has two decisions on his log and no shame in a third.

Danger Zone

How Jessie Rosas loses

  • He cannot close four and a half inches, spends three rounds reaching, and loses a wide decision without ever getting a grip.

  • He shoots from too far out against a long frame, gets stuffed, and is worn down against the fence exactly the way Dumar Roa and Dimitre Ivy were.

  • He gets caught in King's arm triangle in a scramble — the one submission King owns, and the one Rosas is most likely to walk into while working for top position.

Danger Zone

How Sean King III loses

  • The southpaw level change lands early, Rosas takes his back, and King meets the first genuine submission specialist of his career with no published takedown-defence sample of any kind.

  • He fights at Rosas's pace in the pocket, gets tied up, and discovers that a Fury FC clinch and a UFC clinch are different rooms.

  • He banks the first two rounds, cannot finish, and fades in a third round he has reached only twice while Rosas is comfortable at minute twenty.

The fight's central axis

The Weight-Class Question

The UFC's own athlete page lists Jessie Rosas at 135 pounds, and his aborted August debut was booked against bantamweight Miles Johns. He is taking this fight at 145 against a man four and a half inches taller who has never fought anywhere else. Moving up a division on limited preparation, into a debut, against a natural of that size is a well-documented way to look a step slow — and it is the single largest structural argument against the better grappler.

4.5"
height King gives up to nobody in this bout
Where Rosas is actually vulnerable

One Loss, One Lesson

Rosas has been finished exactly once in nine professional fights, and it was a rear-naked choke in 1:55 — he was submitted by a grappler, fast. King is not that; his one submission is a top-position arm triangle rather than a back-take. But the file says plainly that Rosas's chin has never been the problem and his neck has, and King is the first opponent since Keenan Lewis who has demonstrably finished someone from top position.

1:55
the only time Rosas has been finished
Why the lean sits where it does

The Activity Delta Nobody Is Pricing

Four fights in thirteen months against one. King fought in July, April and February of 2026; Rosas fought in June 2026 and, before that, October 2025. Add the August withdrawal, the release and the re-signing, and only one of these two men has had an ordinary training camp. For fighters with under ten professional bouts, recent competitive minutes are among the more reliable predictors available.

4 vs 1
fights in the last 13 months
The symmetry that cuts against the grappler

Two Arm Triangles

Both men's best submission is the same hold. Rosas won a five-round title fight with an arm triangle in June; King finished Cristian Lopez with one in April. That matters more than it looks — the arm triangle is a top-position, pressure-passing submission, which means King is not a striker who happens to own a sub. He has finished a fight from exactly the position Rosas has to reach, which makes the scramble a two-way threat rather than a one-way one.

The honest caveat

No Data At All

There is not one significant strike, one takedown attempt or one second of control time under either name in any official database. Both men are Octagon debutants. Every number on this page comes from two regional logs and a physical sheet, and nothing has been modelled to fill the empty rows. This is a coin flip with a thumb on one side of it, and of every projection on this card it is the one most likely to be wrong.

0
official UFC statistics between the two men

The Five-Round Clock

Jessie Rosas danger windowSean King III danger windowNeutral / contested
R1 · 0:00–5:00Tachidito's window

Five of Rosas's eight career wins ended inside these five minutes, three of them by submission in under 3:16, and Noche UFC in Glendale is at its loudest right here. If he is going to find the level change against an unsampled sprawl, adrenaline and a fresh gas tank are the two things that make it likeliest. Against that: King's own Round-1 record includes a 32-second knockout and a 4:54 grind, so this is not a free five minutes.

Critical Insight
The clock in this fight runs against the grappler, which is unusual. Rosas's equity is front-loaded — five of eight wins inside five minutes, a crowd that peaks in the first round, and a submission game that either finds a grip early or spends the night reaching. King's rises with every minute: his stoppages arrive at 4:54 and 4:09, his submission at 1:40 of Round 2, and both of his decisions went the full fifteen. Rosas's Round-5 arm triangle is the one card that argues the other way, and it is a real one — but it was won at 135-ish against regional opposition, not at 145 against a man four and a half inches taller.

Finish Threat by Round

Share of each fighter's wins that end in each round — early finishers spike left, grinders rise right.

05

The Verdict

One hundred simulated fights, the betting market, and our conviction

If you only read 3 things
1

Both men are UFC debutants. There is not one significant strike, one takedown attempt or one second of control time under either name in any official database — every number on this page comes from two regional fight logs.

2

The split is clean: Rosas owns the mat (four submissions from three techniques, a Round-5 arm triangle to win a title ninety days ago); King owns the frame and the calendar (6'0" at a natural 145 against a fighter the UFC lists at 135, four fights in thirteen months against one).

3

Model: King 55% / Rosas 45%, conviction 3/10 — the lowest on the card. Rosas by submission at 20% is the most under-priced outcome we can identify.

100 Simulated Fights

King Decision — 25%King KO/TKO — 22%Rosas Submission — 20%Rosas Decision — 16%Rosas KO/TKO — 9%King Submission — 8%

Each square = 1 simulated fight. Jessie Rosas gold · Sean King III orange · full color = decision, 70% = submission, 45% = KO/TKO.

Size and division

A 6'0" natural featherweight against a 5'7.5" fighter the UFC's own athlete page lists at 135 pounds, whose aborted August debut was booked at bantamweight. The largest physical asymmetry in the bout and the primary driver of the lean.

Submission depth against an untested sprawl

Four submissions across three distinct techniques, a BJJ purple belt and a fifth-round arm triangle in a title fight, aimed at a takedown defence with no published sample of any kind. This is Rosas's whole case and it is a genuinely good one.

Activity and camp integrity

Four fights in thirteen months and a clean eight weeks, against one fight and a five-week sequence of signing, withdrawal over an uncleared forehead wound, release and re-signing. Sharpness is load-bearing at six and nine professional fights.

Finishing timing

Rosas finishes early — five of his eight wins ended in Round 1. King finishes late in rounds: 4:54, 4:09, 1:40 of Round 2. The clock runs against the smaller man in every branch where the first five minutes pass without a grip.

Distance evidence on both sides

Two complete fifteen-minute wins for King, one decision plus a Round-5 title finish for Rosas. Both men can go long, and neither has a clear cardio edge — which is why this factor moderates the lean rather than extending it.

Total data absence

Zero official rate statistics on either fighter. No significant strikes, no takedown attempts, no control time, no round-by-round rows. The uncertainty band here is the widest of any bout on this card, in both directions, and the conviction rating reflects it.

Fight Scripts

0%
of simulations

Fighting Tall

King keeps the fight at the end of a jab for fifteen minutes, sprawls on the two or three level changes that come, and banks rounds on volume against a man who spends the night covering four and a half inches. Both of his career decisions were unanimous, and this is the most likely single outcome on the page — 29-28 or 30-27.

Scripted outcomes for Jessie Rosas vs Sean King III — how each version of this fight unfolds.

Jessie Rosas win probability
0%
9%
16%
20%
KO/TKODECSUB

  • Two career knockouts, one of them twelve seconds. Real, but not the case — most of this bucket is the branch where he hurts King on the way in rather than one where he outstrikes him over fifteen minutes.

  • The control-time path. It requires him to win minutes on the mat without finishing there, against a longer man who has taken two opponents the full distance himself. Live, but narrower than the submission bucket.

  • The second-largest bucket on the page and the whole reason this fight is close. Four career submissions across three techniques, a Round-5 arm triangle to win a title in June, aimed at a takedown defence nobody has ever sampled.

Sean King III win probability
0%
22%
25%
8%
KO/TKODECSUB

  • Three career knockouts, and the timestamps matter more than the count — 4:54, 4:09 and 0:32. This is accumulation, not a single bomb, and a smaller man moving up a division is the ideal target for it.

  • The largest single bucket and the structural chalk. Two complete fifteen-minute wins, both unanimous, four and a half inches of height, and an opponent who has to solve a range problem before he can start solving anything else.

  • Deliberately non-zero. He finished Cristian Lopez with an arm triangle from top position in April, and Rosas is the one man in this cage who has already been choked out. Small, but not a courtesy number.

Projected Scorecards

How the model scores each round
R1
Jessie
R2
Sean
R3
Sean
29-28 King
Rosas takes the first on crowd, pressure and a takedown; King takes the last two on range and volume
The most likely card in a fight that reaches them
30-27 King
The level change never lands and King fights tall from the opening bell
Common in the branch where the sprawl holds early
29-28 Rosas
Control time and one dominant grappling round outweigh King's volume
His decision path — narrow, and dependent on winning minutes on the mat rather than finishing there

Moneyline

Jessie Rosas
Not posted
Sean King III
Not posted

No book had published a line for this bout at the time of writing and none is invented here — the fight was added on September 4, 2026 after Rodrigo Vera was removed from the card over visa issues. Converting our own probabilities gives fair prices of Sean King III -122 from 55% and Jessie Rosas +122 from 45%, which are model outputs, not quotes. Live prices appear in the hero above once a market opens.

Props: model vs market

PropOddsImplied %Model %FairEdgeVerdict
Best Value
Rosas by submission at 20% is the single most under-priced outcome we can identify. It is the second-largest bucket on the page, it is supported by four career submissions across three distinct techniques and a fifth-round arm triangle in a title fight ninety days ago, and it is aimed at a takedown defence that has never been sampled by anybody. If a market opens with King as a meaningful favourite, that is the side of the ticket to look at. The structural chalk, for what it is worth, is King by decision at 25%.
Conviction
0
3/10

The lowest conviction rating on this card, and deliberately so. Two Octagon debutants with zero official statistics between them — no significant strikes, no takedown attempts, no control time, no round-by-round rows — projected entirely off two regional logs against opposition nobody can grade, in a bout added eight days out after the original fight was cancelled. The lean is real: four and a half inches, a natural weight class and four fights in thirteen months against one. But it is built on inches, activity and biography rather than on anything measured, and the fighter it goes against owns the single best finishing skill in the cage. Lean: Sean King III.

What backs the lean

  • Four and a half inches of height at a natural 145, against a fighter the UFC's own athlete page lists at 135 pounds.

  • Undefeated at 6-0 and never finished, against a man who has already been choked out in 1:55.

  • Four fights in the last thirteen months against one, with the most recent seven weeks ago.

  • Finishes late in rounds — 4:54, 4:09, 1:40 of Round 2 — against a smaller man moving up a division.

  • Two complete fifteen-minute wins, both unanimous, which makes the decision path genuinely live.

  • A clean camp against a five-week sequence of signing, withdrawal, release and re-signing.

What limits it

  • Four submissions across three distinct techniques against King's one — the clearest single skill edge in the bout.

  • An arm triangle at 3:50 of Round 5 to win a UWC title ninety days ago; King has never been past minute fifteen.

  • Southpaw against an opponent whose stance no source publishes, with the level change on the near side.

  • A Noche UFC crowd in Glendale that belongs entirely to him, at its loudest in the round where five of his eight wins landed.

  • A Las Vegas camp built around a ranked UFC bantamweight, against a purely regional Louisiana and Texas background.

  • And the honest one: there is no data here at all. A projection this thin is as likely to be wrong by twenty points as by two.

Final Assessment

In roughly fifty-five of one hundred simulations, Sean "The King of New Orleans" King uses four and a half inches and a natural featherweight frame to keep Jessie Rosas on the end of a jab, defends the level change long enough to make this a striking match, and wins it either on the cards (25%) or by the same late-in-the-round accumulation that stopped Dumar Roa at 4:54 and Dimitre Ivy at 4:09 (22%). That is the structural case, and it rests on size, activity and a clean camp rather than on anything measured.

In the other forty-five, Jessie "Tachidito" Rosas does what he has done to half of the men he has beaten: he gets inside on the southpaw angle, lands the level change, and finds a choke against a fighter who has never met a genuine submission specialist (20% — the second-largest bucket on the page). A slower version of the same fight is a decision built on control time (16%), and there is a smaller but real branch where he simply hurts King on the way in (9%).

The data gives King the frame, the weight class, the calendar and the clean sheet; it gives Rosas the submissions, the Round-5 title finish, the southpaw geometry, the better camp and a building that will be screaming for him. What it does not give either of them is a single second of Octagon evidence. On September 12 in Glendale, this is being projected almost entirely on inches, activity and biography — King 55% / Rosas 45%, conviction 3/10, and of every fight on this card it is the one most likely to make us look foolish.

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