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UFC Fight Night: Jung vs. Ige
Khaos Williams
Khaos Williams
11-2 · USA
VS
June 19, 2021 · Las Vegas, Nevada, USA
Welterweight · 3 rounds
169.0lb
Weigh-in
170.0lb
Khaos Williams def. Matthew Semelsberger by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Williams26/830/001:21
Semelsberger18/320/000:00
R2
Williams29/800/000:30
Semelsberger23/410/000:02
R3
Williams36/970/000:02
Semelsberger23/680/000:00
Total
Williams91/2600/001:53
Semelsberger64/1410/000:02

Scorecards

Williams vs Semelsberger

RdDave HagenMichael BellRick WinterCommunity
R110-910-910-910-9
R29-109-1010-99.5-9.5
R310-910-910-99.8-9.2
Total29-2829-2830-2729.3-27.7

Media (14 cards) · avg 29.627.4 · 14 Williams · 0 Semelsberger

Official cards + public consensus via MMA Decisions. Per round: Williams-Semelsberger.

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 probabilitySemelsberger
55.9%44.1%
KO / TKO
26%
Submission
15%
Decision
59%
Expected fight time: 11.0 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 Semelsberger. Tap a bar for why.

Predicted outcomes
Williams56%
Wins by
Model
Equity
Mkt
KO / TKO15%27%36%
Submission8%14%4%
Decision33%59%15%
Predicted output
Sig. strikes43 (1858)act 91
Takedowns0.5 (0.02.0)act 0
Semelsberger44%
Wins by
Model
Equity
Mkt
KO / TKO11%25%15%
Submission7%16%7%
Decision26%59%21%
Predicted output
Sig. strikes44 (1860)act 64
Takedowns1.0 (0.03.4)act 0
Combined totals~87 sig strikes~1.4 takedownsmkt —
How it ends
mkt —
R124%
R210%
R37%
Distance59%
Fighter props
Most sig. strikestie 1.1%
Williams
48.1%+106
Semelsberger
-10650.8%
Most takedownstie 41.3%
Williams
19.6%+199
Semelsberger
-19939.1%
Significant strikes — over/under
Williams
Expected: 42.8
43
Over 43
39.0%
+154
Exactly 43
1.1%
push
Under 43
59.9%
-154
054108
Semelsberger
Expected: 44.4
44.5
Over 44.5
39.6%
+152
Under 44.5
60.4%
-152
056111
Takedowns — over/under
Williams
Expected: 0.5
0.5
Over 0.5
28.5%
+250
Under 0.5
71.5%
-250
035
Semelsberger
Expected: 1.0
1
Over 1
31.3%
+171
Exactly 1
15.3%
push
Under 1
53.4%
-171
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 11.0 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
Williams55.9%59.0%−3.1-163
Semelsberger44.1%41.0%+3.1+132
By method
Williams by KO/TKO14.6%36.5%−21.9+122
Williams by submission8.3%4.4%+3.9+1761
Williams by decision33.0%15.4%+17.6+427
Semelsberger by KO/TKO11.5%15.3%−3.8+430
Semelsberger by submission6.6%7.2%−0.6+1024
Semelsberger by decision26.1%21.3%+4.8+281
Total rounds (over)
Over 1.5 rds75.8%56.9%+19.0-155
Over 2.5 rds65.6%43.3%+22.3+115
Goes the distance
Fight goes to decision59.1%39.0%+20.1+139

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
65.7Striking70.8
Semelsberger +5.1
0.0Grappling72.1
Semelsberger +72.1
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
WilliamsSemelsberger
Tale of the tape
Ratings (Elo)
1543
Pound-for-pound
1541
1543
Divisional
1541
1507
Striking offense
1504
1505
Striking defense
1498
1495
Grappling offense
1500
1496
Grappling defense
1512
Physical
27 yrs
Age
28 yrs
6'0"
Height
6'1"
77"
Reach
75"
Orthodox
Stance
Switch
Striking (UFC career)
4.39
Strikes landed / min
7.93
45%
Strike accuracy
51%
2.95
Strikes absorbed / min
5.31
45%
Strike defense
56%
Grappling (UFC career)
0.00
Takedowns / 15 min
1.97
0%
Takedown accuracy
100%
0%
Takedown defense
100%
0.0
Sub attempts / 15 min
1.0
Form & résumé
67%
UFC win rate
100%
-1
Win/loss streak
+2
67%
Last-5 win rate
100%
100%
Finish rate
50%
Recent opp. quality
182
Days since last fight
98
Recent form (last 5 UFC)
Khaos Williams
  • LMichel PereiraU-DEC R3
    Close -1256mo before
  • WAbdul Razak AlhassanKO/TKO R1
    Close +1857mo before
  • WAlex MoronoKO/TKO R1
    Close +3001y 4mo before
Matthew Semelsberger
  • WJason WittKO/TKO R1
    Close -1263mo before
  • WCarlton MinusU-DEC R3
    Close -10610mo before
Williams — win / loss by method
Record: 11-2-0

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
6 wins, 0 losses
W
55% of wins
L
0% of losses
Submission
1 win, 0 losses
W
9% of wins
L
0% of losses
Decision
4 wins, 2 losses
W
36% of wins
L
100% of losses
UFC
2win1loss0draw0NC
WinsLosses
2 (100%)KO/TKO(0%) 0
0 (0%)Submission(0%) 0
0 (0%)Decision(100%) 1
Non-UFC
9win1loss0draw0NC
WinsLosses
4 (44%)KO/TKO(0%) 0
1 (11%)Submission(0%) 0
4 (44%)Decision(100%) 1
Semelsberger — win / loss by method
Record: 8-2-0

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
5 wins, 1 loss
W
63% of wins
L
50% of losses
Submission
1 win, 1 loss
W
13% of wins
L
50% of losses
Decision
2 wins, 0 losses
W
25% of wins
L
0% of losses
UFC
2win0loss0draw0NC
WinsLosses
1 (50%)KO/TKO() 0
0 (0%)Submission() 0
1 (50%)Decision() 0
Non-UFC
6win2loss0draw0NC
WinsLosses
4 (67%)KO/TKO(50%) 1
1 (17%)Submission(50%) 1
1 (17%)Decision(0%) 0

Profiles

Experience
Williams
Semelsberger
3
UFC fights
2
15.9 min · 5.3 avg
Octagon time
15.3 min · 7.6 avg
9y 3m
Career length
9y 4m
UFC schedule strength

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

Williams
Semelsberger
51W–18L · 73.9%
Overall
28W–7L · 80.0%
27W–7L · 79.4%
Wins
28W–7L · 80.0%
24W–11L · 68.6%
Losses
0W–0L
Non-UFC schedule strength
Williams
Semelsberger
55W–55L · 50.0%
Overall
21W–14L · 60.0%
55W–55L · 50.0%
Wins
18W–10L · 64.3%
0W–0L
Losses
3W–4L · 42.9%
Distance striking
Williams
Semelsberger
4.52
Landed / min
8.95
42.1%
Accuracy
49.5%
50.7%
Defense
56.3%
1.88
Knockdowns / 15 min
1.97
77.7%
Time at distance
79.8%
Grappling & control
Williams
Semelsberger
0.00
Takedowns / 15 min
1.97
0.0%
Takedown accuracy
100.0%
0.0%
Takedown defense
100.0%
0.00
Sub attempts / 15 min
0.98
33.6%
Control share
100.0%
Strike target map
Williams
  • Head44%(31)div 63%
  • Body19%(13)div 20%
  • Legs37%(26)div 16%
Semelsberger
  • Head67%(81)div 63%
  • Body13%(16)div 20%
  • Legs20%(24)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.

Matthew Semelsberger
CloseSSTDKDCtrl

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