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UFC 331FeatherweightPrelimsSep 20, 2026

Michael Aswell vs JooSang Yoo

The AI’s call

JooSang Yoo66%by Decision

Yoo's striking volume and accuracy edge out Aswell's finishing power in a competitive featherweight bout.

AI vs the market

Aswell30%
Yoo70%
AI

AI 66% · crowd 70% on Yoo

Aligned. The AI and the market read this fight the same way — 4 points apart.

The breakdown

Michael Aswell is a 11-4 veteran with solid finishing power (55% KO/TKO rate) but has lost three of his last five fights, all by decision, suggesting he's struggling at this level. JooSang Yoo enters on a loss to Daniel Santos but carries a 9-1 record with 44% finishing rate and superior UFC-level striking metrics: 6.36 sig strikes landed per minute with 59% accuracy and 2.58 knockdowns per 15 minutes. Yoo is taller (67in vs 5'8"), older at 31, and has faced higher-caliber competition in the UFC. However, Yoo's recent TKO loss to Santos and Aswell's proven ability to finish fights early (R1 TKO over Almeida) keep this competitive. Aswell's camp (4oz Fight Club) is less established than Yoo's Pinnacle/Vamos setup, and his decision losses suggest he may lack the output to keep pace with Yoo's volume and accuracy.

Aswell — edges

  • Proven finishing power with 55% KO/TKO rate
  • Recent R1 TKO finish shows explosive early-round capability
  • Slightly younger and potentially fresher on the decline

Yoo — edges

  • Superior striking volume: 6.36 sig strikes/min vs Aswell's implied lower output
  • 59% striking accuracy and 2.58 knockdowns/15min demonstrate precision and power
  • Height advantage (67in vs 5'8") and reach control
  • More recent UFC experience and higher-level competition faced

X-factor

Aswell lands early explosive finish before Yoo's volume and precision overwhelm him in later rounds.

How the market sees it ending

How it ends

Goes the full distance50%
Ends by KO / TKO50%
Ends by submission50%

Who lands the knockout

Aswell by KO/TKO50%
Yoo by KO/TKO50%

Tale of the tape

AswellYoo

Physical

Age

31

Height

67"

Record

11

Wins

9
4

Losses

1
6

Wins by KO/TKO

4
0

Wins by submission

1

Striking

Landed / min

6.36

Absorbed / min

4.99

Accuracy

59%

Knockdowns / 15 min

2.58

Grappling

Takedowns / 15 min

0

Sub. attempts / 15 min

0

About these numbers

Market probability is the live crowd consensus from Polymarket, a public prediction market where people trade on outcomes — we read it as a data signal for what the crowd expects, and it updates continuously. AI probabilityis our own model’s independent read of the matchup from fighter data alone; it never sees the market price, which is why the two can disagree.

All of it is published for analysis and entertainment. Nothing here is betting advice, a recommendation, or a prediction of a guaranteed result — fights are volatile and upsets are the sport.