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UFC Fight Night: Allen vs. Costa
Khaos Williams
Khaos Williams
15-5 · USA
VS
May 16, 2026 · Las Vegas, Nevada, USA
Welterweight · 3 rounds
170.5lb
Weigh-in
170.5lb
Khaos Williams def. Nikolay Veretennikov by KO/TKO (Punches), R1 3:31
Performance
Round by round
SSTDKDCtrl
R1 · 3:31
Williams21/560/010:54
Veretennikov13/250/000:00
Total
Williams21/560/010:54
Veretennikov13/250/000:00

Pre-fight

The model's read going in

The walk-forward model's call at the time of the bout — persisted out-of-sample, with no hindsight about the result.

Prediction
WilliamsWin probabilityVeretennikov
63.8%36.2%
KO / TKO
34%
Submission
20%
Decision
46%
Expected fight time: 10.1 min
Retrospective pick: the walk-forward model's call at the time of the fight — persisted out-of-sample, with no hindsight about the result.
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward Williams, blue toward Veretennikov. Tap a bar for why.

Predicted outcomes
Williams64%
Wins by
Model
Equity
Mkt
KO / TKO21%33%26%
Submission12%19%4%
Decision31%48%22%
Predicted output
Sig. strikes49 (2067)act 21
Takedowns0.5 (0.02.0)act 0
Veretennikov36%
Wins by
Model
Equity
Mkt
KO / TKO13%37%24%
Submission8%22%4%
Decision15%41%20%
Predicted output
Sig. strikes39 (1653)act 13
Takedowns0.9 (0.03.1)act 0
Combined totals~88 sig strikes~1.3 takedownsmkt —
How it ends
mkt —
R127%
R216%
R311%
Distance46%
Fighter props
Most sig. strikestie 1.1%
Williams
56.6%-134
Veretennikov
+13442.3%
Most takedownstie 39.8%
Williams
20.1%+199
Veretennikov
-19940.0%
Significant strikes — over/under
Williams
Expected: 49.0
49
Over 49
39.3%
+152
Exactly 49
1.0%
push
Under 49
59.7%
-152
062123
Veretennikov
Expected: 39.2
39
Over 39
39.4%
+151
Exactly 39
1.2%
push
Under 39
59.4%
-151
04998
Takedowns — over/under
Williams
Expected: 0.5
0.5
Over 0.5
29.5%
+239
Under 0.5
70.5%
-239
035
Veretennikov
Expected: 0.9
1
Over 1
30.9%
+166
Exactly 1
17.7%
push
Under 1
51.4%
-166
035

Odds are model-implied (no real prop market is priced for these). The “most” prices are draw-no-bet — a tie (for takedowns, usually 0–0) is a push, so each side is priced off its chance of winning given a result, while the % shown is the raw chance of landing strictly more. Drag a line in half-point steps: a half line (e.g. 2.5) is a clean over/under, while a whole number adds a third outcome — landing exactly on it, a push — so over, exact and under sum to 100%. On a whole number the over/under odds are draw-no-bet (priced off the decisive mass, since the push refunds), so the two sides stay mirror images rather than implying an arbitrage.

Expected fight time 10.1 min. Predicted-output ranges are percentiles of the model’s simulated fights: sig strikes the middle 50% (25th–75th); takedowns the wider 10th–90th, since they’re 0 in most fights so a narrow band would collapse to 0. Win-by-method = win probability × that fighter’s own method split: the model forecasts how the fight ends, and that forecast is divided between the corners by each fighter’s finishing record — UFC wins in full, earlier-career wins at half weight, as of fight night — reconciled so the fighters’ totals still equal their win probabilities and the methods still total the fight-level forecast above. “Equity” is each of those over that fighter’s win % — how they win given that they win — so a column adds to 100%, and it differs by corner. A fighter with no classifiable wins at any level leans on the fight-level split. “How it ends” is the model’s round-of-finish split. “Mkt” is the de-vigged market prop (consensus across books), shown for context, not as a betting signal; rounds & totals slots fill as that data lands. Percentages are apportioned by largest remainder, so each set adds to its total exactly and an individual figure can sit a point off its own rounding.

Model vs market
Final
ModelMarketGapLine
To win
Williams63.8%52.3%+11.5-123
Veretennikov36.2%47.7%−11.5-101
By method
Williams by KO/TKO21.9%26.3%−4.4+224
Williams by submission12.9%4.1%+8.8+1993
Williams by decision29.1%22.2%+6.9+284
Veretennikov by KO/TKO12.4%23.5%−11.1+262
Veretennikov by submission7.3%4.1%+3.2+2001
Veretennikov by decision16.5%19.9%−3.4+329
Total rounds (over)
Over 1.5 rds73.0%63.2%+9.8-210
Over 2.5 rds56.5%49.0%+7.5-110
Goes the distance
Fight goes to decision45.5%43.5%+2.0+115

Market % is the de-vigged (no-vig) consensus across the books that price both fighters; the line is the average across books with the min–max range in parentheses. Gap is the model minus the market in points (+ = the model rates that outcome above the market). Thin or one-sided markets are flagged or left blank rather than shown as a fabricated %. Shown for context, not as a bet — the closing line is the sharpest public price and the model trails it on average. For 5-round bouts the model splits its round-3+ finish mass into rounds 3–5 by the historical within-bucket rate, so the over-3.5 / 4.5 lines carry a model estimate.

Trait web
53.6Striking59.2
Veretennikov +5.5
14.4Grappling38.0
Veretennikov +23.6
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
WilliamsVeretennikov
Tale of the tape
Ratings (Elo)
1556
Pound-for-pound
1510
1555
Divisional
1523
1527
Striking offense
1497
1494
Striking defense
1502
Grappling offense
Grappling defense
Physical
32 yrs
Age
36 yrs
6'0"
Height
6'1"
77"
Reach
74"
Orthodox
Stance
Orthodox
Striking (UFC career)
4.94
Strikes landed / min
2.49
39%
Strike accuracy
54%
5.39
Strikes absorbed / min
3.24
41%
Strike defense
41%
Grappling (UFC career)
0.00
Takedowns / 15 min
0.54
0%
Takedown accuracy
22%
52%
Takedown defense
67%
0.0
Sub attempts / 15 min
0.5
Form & résumé
60%
UFC win rate
40%
-2
Win/loss streak
+1
40%
Last-5 win rate
40%
67%
Finish rate
50%
Recent opp. quality
343
Days since last fight
98
Recent form (last 5 UFC)
Khaos Williams
  • LAndreas GustafssonU-DEC R3
    Close -18811mo before
  • LGabriel BonfimSUB R2
    Close +1881y 3mo before
  • WCarlston HarrisKO/TKO R1
    Close -1222y before
  • WRolando BedoyaS-DEC R3
    Close -4503y before
  • LRandy BrownS-DEC R3
    Close -1124y before
Nikolay Veretennikov
  • WNiko PriceKO/TKO R1
    Close -2723mo before
  • LPunahele SorianoU-DEC R3
    Close +2937mo before
  • WFrancisco PradoS-DEC R3
    Close +11510mo before
  • LAustin VanderfordKO/TKO R2
    Close -1131y 3mo before
  • LDanny BarlowS-DEC R3
    opp missedClose +3001y 9mo before
Williams — win / loss by method
Record: 15-5-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
8 wins, 0 losses
W
53% of wins
L
0% of losses
Submission
1 win, 1 loss
W
7% of wins
L
20% of losses
Decision
6 wins, 4 losses
W
40% of wins
L
80% of losses
UFC
6win4loss0draw0NC
WinsLosses
4 (67%)KO/TKO(0%) 0
0 (0%)Submission(25%) 1
2 (33%)Decision(75%) 3
Non-UFC
9win1loss0draw0NC
WinsLosses
4 (44%)KO/TKO(0%) 0
1 (11%)Submission(0%) 0
4 (44%)Decision(100%) 1
Veretennikov — win / loss by method
Record: 14-7-0

Bar length is fight count (largest bar = full width); shading splits finishes by round and decisions by unanimous vs split — tap a bar for the round-by-round count.

KO/TKO
10 wins, 2 losses
W
71% of wins
L
29% of losses
Submission
1 win, 1 loss
W
7% of wins
L
14% of losses
Decision
3 wins, 4 losses
W
21% of wins
L
57% of losses
UFC
2win3loss0draw0NC
WinsLosses
1 (50%)KO/TKO(33%) 1
0 (0%)Submission(0%) 0
1 (50%)Decision(67%) 2
Non-UFC
12win4loss0draw0NC
WinsLosses
9 (75%)KO/TKO(25%) 1
1 (8%)Submission(25%) 1
2 (17%)Decision(50%) 2

Profiles

Experience
Williams
Veretennikov
10
UFC fights
5
98.5 min · 9.8 avg
Octagon time
55.9 min · 11.2 avg
9y 3m
Career length
13y 9m
UFC schedule strength

Opponents' records on fight night — toggle their full cross-promotional record vs UFC bouts only.

Williams
Veretennikov
143W–34L · 80.8%
Overall
59W–18L · 76.6%
78W–16L · 83.0%
Wins
28W–12L · 70.0%
65W–18L · 78.3%
Losses
31W–6L · 83.8%
Non-UFC schedule strength
Williams
Veretennikov
55W–55L · 50.0%
Overall
99W–44L · 69.2%
55W–55L · 50.0%
Wins
78W–39L · 66.7%
0W–0L
Losses
21W–5L · 80.8%
Distance striking
Williams
Veretennikov
6.24
Landed / min
4.42
37.4%
Accuracy
47.1%
46.0%
Defense
52.1%
0.76
Knockdowns / 15 min
0.00
70.0%
Time at distance
39.6%
Grappling & control
Williams
Veretennikov
0.00
Takedowns / 15 min
0.54
0.0%
Takedown accuracy
22.2%
51.7%
Takedown defense
66.7%
0.00
Sub attempts / 15 min
0.54
46.9%
Control share
11.9%
Strike target map
Williams
  • Head48%(234)div 63%
  • Body20%(96)div 21%
  • Legs32%(156)div 16%
Veretennikov
  • Head50%(69)div 63%
  • Body42%(58)div 21%
  • Legs9%(12)div 16%

Where each fighter lands significant strikes (career). “div” = the weight-class average.

Khaos Williams
CloseSSTDKDCtrl

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.

Nikolay Veretennikov
CloseSSTDKDCtrl

Per-fight: SS & TD shown landed/attempted; Close = consensus closing line.