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UFC 331BantamweightPrelimsSep 20, 2026

Marlon Vera vs Charles Jourdain

The AI’s call

Charles Jourdain68%by Submission · Round 2

Jourdain's momentum and submission timing exploit Vera's defensive decline and four-fight skid.

AI vs the market

Vera34%
Jourdain67%
AI

AI 68% · crowd 67% on Jourdain

Aligned. The AI and the market read this fight the same way — 2 points apart.

The breakdown

Vera enters on a brutal four-fight losing skid against ranked competition (O'Malley, Figueiredo, Zahabi, Martinez), all decisions. At 33, he's absorbing 5.34 sig strikes per minute while landing just 4.18—a significant defensive liability. His submission threat (0.76 attempts/15min) remains his best tool, but he's failed to finish in his last four outings. Jourdain, conversely, is riding a three-fight win streak with two recent submission finishes (guillotine chokes in rounds 1 and 2), showing timing and aggression. He lands more strikes (5.36/min) with better defense (4.11 absorbed/min), and while his takedown accuracy is poor (22%), he doesn't need it—his submission rate (0.61/15min) and finishing instinct align with current form. Vera's age, form collapse, and defensive deficiencies against a hungry, submission-heavy opponent with momentum is a clear edge to Jourdain.

Vera — edges

  • Longer reach (70.5in vs 69in) and leg reach (40.5in vs 39in)
  • Higher submission attempt rate (0.76 vs 0.61 per 15min)
  • Experience against elite competition in recent losses

Jourdain — edges

  • Three-fight winning streak with two recent submission finishes
  • Superior striking output (5.36 vs 4.18 sig strikes/min)
  • Better striking defense (4.11 absorbed vs 5.34/min)
  • Younger (30 vs 33) and on upward trajectory

X-factor

Vera's submission defense and ability to weather early aggression; Jourdain's tendency to get caught standing (one KO loss).

How the market sees it ending

How it ends

Goes the full distance61%
Ends by KO / TKO30%
Ends by submission28%

Who lands the knockout

Vera by KO/TKO27%
Jourdain by KO/TKO26%

Tale of the tape

VeraJourdain

Physical

33

Age

30
68"

Height

69"
70.5"

Reach

69"

Record

23

Wins

18
12

Losses

8
8

Wins by KO/TKO

8
10

Wins by submission

7

Striking

4.18

Landed / min

5.36
5.34

Absorbed / min

4.11
48%

Accuracy

49%
0.55

Knockdowns / 15 min

0.54

Grappling

0.47

Takedowns / 15 min

0.38
39%

TD accuracy

22%
0.76

Sub. attempts / 15 min

0.61

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.