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Dana White's Contender SeriesFeatherweightMain CardSep 16, 2026

Antonio Monteiro vs Tyshawn Williams

The AI’s call

Tyshawn Williams68%by KO/TKO · Round 2

Williams' undefeated record and knockout power edge Monteiro's grappling in a striking-heavy matchup.

AI vs the market

Monteiro29%
Williams71%
AI

AI 68% · crowd 71% on Williams

Aligned. The AI and the market read this fight the same way — 3 points apart.

The breakdown

Tyshawn Williams arrives undefeated at 8-0 with a 50% finishing rate (4 KO/TKO, 1 SUB) and momentum from a recent R1 knockout. He's shorter (5'6" vs 5'8") but fights out of the elite Xtreme Couture camp and has shown consistent striking power across his last five fights. Antonio Monteiro is a 23-fight veteran with superior grappling credentials (6 submissions, 33% finish rate) and recent submission success, but he's 1-1 in his last two and took a unanimous decision loss to Yadier Del Valle just months ago. Monteiro's submission game and experience are real, but Williams' undefeated record, striking output, and knockout power present a significant stylistic and momentum advantage at featherweight.

Monteiro — edges

  • Submission expertise: 6 finishes, recent R1 RNC vs Savio de Souza
  • 23-fight veteran experience and camp pedigree (Nova Uniao)
  • Grappling-heavy style can neutralize striking threats

Williams — edges

  • Perfect 8-0 record with 50% finishing rate and recent R1 KO
  • Consistent knockout power across last five fights
  • Xtreme Couture striking development; momentum and youth curve

X-factor

Whether Monteiro can secure takedowns early before Williams' striking volume overwhelms him.

How the market sees it ending

How it ends

Goes the full distance27%
Ends by KO / TKO56%
Ends by submission18%

Who lands the knockout

Monteiro by KO/TKO48%
Williams by KO/TKO29%

Tale of the tape

MonteiroWilliams

Record

18

Wins

8
5

Losses

0
3

Wins by KO/TKO

4
6

Wins by submission

1

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.