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UFC Fight Night: Ribas vs. Namajunas
Karl Williams
Karl Williams
9-1 · VIR
VS
Justin Tafa
Justin Tafa
7-3 · AUS
March 23, 2024 · Las Vegas, Nevada, USA
Heavyweight · 3 rounds
246.5lb
Weigh-in
264.5lb
Karl Williams def. Justin Tafa by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Williams12/164/403:58
Tafa6/120/000:00
R2
Williams20/341/202:45
Tafa9/150/000:00
R3
Williams8/112/603:48
Tafa6/160/000:00
Total
Williams40/617/12010:31
Tafa21/430/000:00

Scorecards

Williams vs Tafa

RdChris FloresJacob MontalvoMichael BellCommunity
R110-910-910-99.7-9.3
R210-910-910-99.9-9.1
R39-1010-99-109.4-9.6
Total29-2830-2729-2829-28

Media (12 cards) · avg 29.827.3 · 12 Williams · 0 Tafa

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

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 probabilityTafa
59.4%40.6%
KO / TKO
52%
Submission
15%
Decision
33%
Expected fight time: 8.6 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 Tafa. Tap a bar for why.

Predicted outcomes
Williams59%
Wins by
Model
Equity
Mkt
KO / TKO24%41%20%
Submission9%15%11%
Decision26%44%31%
Predicted output
Sig. strikes35 (1448)act 40
Takedowns1.0 (0.03.4)act 7
Tafa41%
Wins by
Model
Equity
Mkt
KO / TKO28%68%26%
Submission6%15%4%
Decision7%17%8%
Predicted output
Sig. strikes31 (1342)act 21
Takedowns0.2 (0.00.9)act 0
Combined totals~66 sig strikes~1.2 takedownsmkt —
How it ends
mkt —
R138%
R220%
R39%
Distance33%
Fighter props
Most sig. strikestie 1.4%
Williams
53.1%-117
Tafa
+11745.4%
Most takedownstie 40.7%
Williams
48.2%-438
Tafa
+43811.0%
Significant strikes — over/under
Williams
Expected: 35.1
35
Over 35
39.2%
+152
Exactly 35
1.4%
push
Under 35
59.4%
-152
04488
Tafa
Expected: 31.0
31
Over 31
39.0%
+152
Exactly 31
1.5%
push
Under 31
59.4%
-152
03978
Takedowns — over/under
Williams
Expected: 1.0
1
Over 1
34.4%
+135
Exactly 1
19.1%
push
Under 1
46.5%
-135
035
Tafa
Expected: 0.2
0
Over 0
17.9%
Exactly 0
82.1%
push
Under 0
0.0%
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 8.6 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
Williams59.4%63.2%−3.8-194
Tafa40.6%36.8%+3.8+160
By method
Williams by KO/TKO31.0%20.4%+10.6+309
Williams by submission8.9%11.3%−2.4+642
Williams by decision19.6%30.6%−11.0+173
Tafa by KO/TKO21.1%25.7%−4.6+225
Tafa by submission6.0%3.7%+2.3+2163
Tafa by decision13.4%8.3%+5.1+906
Total rounds (over)
Over 1.5 rds62.5%60.7%+1.8-184
Over 2.5 rds42.4%47.3%−4.9-102
Goes the distance
Fight goes to decision33.0%40.8%−7.8+129

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
71.3Striking62.1
Williams +9.2
65.3Grappling25.0
Williams +40.3
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
WilliamsTafa
Tale of the tape
Ratings (Elo)
1547
Pound-for-pound
1528
1547
Divisional
1528
1490
Striking offense
1529
1500
Striking defense
1484
1503
Grappling offense
1487
1503
Grappling defense
1521
Physical
34 yrs
Age
30 yrs
6'3"
Height
6'0"
79"
Reach
74"
Orthodox
Stance
Southpaw
Striking (UFC career)
3.60
Strikes landed / min
5.13
48%
Strike accuracy
55%
2.67
Strikes absorbed / min
5.93
61%
Strike defense
49%
Grappling (UFC career)
4.50
Takedowns / 15 min
0.00
39%
Takedown accuracy
0%
100%
Takedown defense
100%
0.0
Sub attempts / 15 min
0.0
Form & résumé
100%
UFC win rate
50%
+2
Win/loss streak
+1
100%
Last-5 win rate
60%
0%
Finish rate
100%
Recent opp. quality
315
Days since last fight
196
Recent form (last 5 UFC)
Karl Williams
  • WChase ShermanU-DEC R3
    Close -42610mo before
  • WLukasz BrzeskiU-DEC R3
    Close -2501y before
Justin Tafa
  • WAusten LaneKO/TKO R1
    Close -1986mo before
  • WParker PorterKO/TKO R1
    Close -1201y 1mo before
  • WHarry HunsuckerKO/TKO R1
    missedClose -3342y 3mo before
  • LJared VanderaaU-DEC R3
    Close -1882y 10mo before
  • LCarlos FelipeS-DEC R3
    Close +1553y 2mo before
Williams — win / loss by method
Record: 9-1-0

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
3 wins, 0 losses
W
33% of wins
L
0% of losses
Submission
0 wins, 1 loss
W
0% of wins
L
100% of losses
Decision
6 wins, 0 losses
W
67% of wins
L
0% of losses
UFC
2win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
0 (0%)Submission() 0
2 (100%)Decision() 0
Non-UFC
7win1loss0draw0NC
WinsLosses
3 (43%)KO/TKO(0%) 0
0 (0%)Submission(100%) 1
4 (57%)Decision(0%) 0
Tafa — win / loss by method
Record: 7-3-0, 1 NC

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
7 wins, 1 loss
W
100% of wins
L
33% of losses
Submission
0 wins, 0 losses
W
0% of wins
L
0% of losses
Decision
0 wins, 2 losses
W
0% of wins
L
67% of losses
UFC
4win3loss0draw1NC
WinsLosses
4 (100%)KO/TKO(33%) 1
0 (0%)Submission(0%) 0
0 (0%)Decision(67%) 2
Non-UFC
3win0loss0draw0NC
WinsLosses
3 (100%)KO/TKO() 0
0 (0%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
Williams
Tafa
2
UFC fights
8
30.0 min · 15.0 avg
Octagon time
39.0 min · 4.9 avg
5y 5m
Career length
9y 2m
UFC schedule strength

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

Williams
Tafa
24W–13L · 64.9%
Overall
62W–22L · 73.8%
24W–13L · 64.9%
Wins
37W–16L · 69.8%
0W–0L
Losses
25W–6L · 80.6%
Non-UFC schedule strength
Williams
Tafa
37W–18L · 67.3%
Overall
5W–3L · 62.5%
25W–14L · 64.1%
Wins
5W–3L · 62.5%
12W–4L · 75.0%
Losses
0W–0L
Distance striking
Williams
Tafa
5.61
Landed / min
5.51
45.1%
Accuracy
52.5%
63.8%
Defense
51.7%
0.50
Knockdowns / 15 min
1.54
51.7%
Time at distance
78.7%
Grappling & control
Williams
Tafa
4.50
Takedowns / 15 min
0.00
39.1%
Takedown accuracy
0.0%
100.0%
Takedown defense
100.0%
0.00
Sub attempts / 15 min
0.00
94.9%
Control share
77.5%
Strike target map
Williams
  • Head78%(84)div 65%
  • Body9%(10)div 20%
  • Legs13%(14)div 16%
Tafa
  • Head57%(114)div 65%
  • Body28%(56)div 20%
  • Legs15%(30)div 16%

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

Karl Williams
CloseSSTDKDCtrl

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

Justin Tafa
CloseSSTDKDCtrl

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