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UFC 83: Serra vs St-Pierre 2
VS
Matt Serra
Matt Serra
10-4 · USA
April 19, 2008 · Montreal, Quebec, Canada
Welterweight · 5 rounds · Main event
169.5lb
Weigh-in
169.5lb
Georges St-Pierre def. Matt Serra by KO/TKO (Knees), R2 4:45
Performance
Round by round
SSTDKDCtrl
R1
St-Pierre17/222/204:30
Serra0/70/000:00
R2 · 4:45
St-Pierre25/322/303:39
Serra3/110/000:00
Total
St-Pierre42/544/508:09
Serra3/180/000:00

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
St-PierreWin probabilitySerra
83.3%16.7%
KO / TKO
47%
Submission
6%
Decision
47%
Expected fight time: 18.9 min
What drives the pick

Each bar is a feature's push on the model from the center axis. Red pushes toward St-Pierre, blue toward Serra. Tap a bar for why.

Predicted outcomes
St-Pierre83%
Wins by
Model
Equity
Mkt
KO / TKO41%49%
Submission5%6%
Decision37%45%
Predicted output
Sig. strikes91 (52118)act 42
Takedowns2.4 (0.05.1)act 4
Serra17%
Wins by
Model
Equity
Mkt
KO / TKO6%37%
Submission1%6%
Decision10%57%
Predicted output
Sig. strikes27 (1535)act 3
Takedowns0.1 (0.00.4)act 0
Combined totals~118 sig strikes~2.5 takedownsmkt —
How it ends
mkt —
R18%
R29%
R318%
R411%
R57%
Distance47%
Fighter props
Most sig. strikes
St-Pierre
91.4%-1118
Serra
+11188.2%
Most takedownstie 12.5%
St-Pierre
84.5%-2856
Serra
+28563.0%
Significant strikes — over/under
St-Pierre
Expected: 91.0
91
Over 91
42.1%
+136
Exactly 91
0.7%
push
Under 91
57.1%
-136
0114228
Serra
Expected: 27.1
27
Over 27
41.4%
+136
Exactly 27
2.4%
push
Under 27
56.2%
-136
03468
Takedowns — over/under
St-Pierre
Expected: 2.4
2.5
Over 2.5
47.1%
+112
Under 2.5
52.9%
-112
048
Serra
Expected: 0.1
0
Over 0
13.9%
Exactly 0
86.1%
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 18.9 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
St-Pierre83.3%79.5%+3.8-448
Serra16.7%20.5%−3.8+373

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
83.4Striking58.8
St-Pierre +24.5
93.4Grappling49.1
St-Pierre +44.3
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
St-PierreSerra
Tale of the tape
Ratings (Elo)
1632
Pound-for-pound
1551
1626
Divisional
1535
1513
Striking offense
1452
1547
Striking defense
1542
1538
Grappling offense
1511
1545
Grappling defense
1502
Physical
26 yrs
Age
33 yrs
5'11"
Height
5'6"
76"
Reach
68"
Orthodox
Stance
Orthodox
Striking (UFC career)
4.05
Strikes landed / min
1.43
56%
Strike accuracy
41%
1.25
Strikes absorbed / min
1.66
65%
Strike defense
48%
Grappling (UFC career)
3.96
Takedowns / 15 min
2.61
81%
Takedown accuracy
20%
85%
Takedown defense
43%
2.1
Sub attempts / 15 min
1.2
Form & résumé
82%
UFC win rate
60%
+2
Win/loss streak
+2
80%
Last-5 win rate
80%
56%
Finish rate
33%
Recent opp. quality
112
Days since last fight
378
Recent form (last 5 UFC)
Georges St-Pierre
  • WMatt HughesSUB R2
    Close -1994mo before
  • WJosh KoscheckU-DEC R3
    Close -2868mo before
  • LMatt SerraKO/TKO R1
    Close -13001y before
  • WMatt HughesKO/TKO R2
    Close +1151y 5mo before
  • WBJ PennS-DEC R3
    Close -1152y 2mo before
Matt Serra
  • WGeorges St-PierreKO/TKO R1
    Close +8501y before
  • WChris LytleS-DEC R3
    Close +1351y 5mo before
  • LKaro ParisyanU-DEC R3
    2y 10mo before
  • WIvan MenjivarU-DEC R3
    Close -1603y 10mo before
  • WJeff CurranU-DEC R3
    Close -3504y 3mo before
St-Pierre — win / loss by method
Record: 15-2-0

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, 1 loss
W
40% of wins
L
50% of losses
Submission
5 wins, 1 loss
W
33% of wins
L
50% of losses
Decision
4 wins, 0 losses
W
27% of wins
L
0% of losses
UFC
9win2loss0draw0NC
WinsLosses
3 (33%)KO/TKO(50%) 1
2 (22%)Submission(50%) 1
4 (44%)Decision(0%) 0
Non-UFC
6win0loss0draw0NC
WinsLosses
3 (50%)KO/TKO() 0
3 (50%)Submission() 0
0 (0%)Decision() 0
Serra — win / loss by method
Record: 10-4-0

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
1 win, 1 loss
W
10% of wins
L
25% of losses
Submission
5 wins, 0 losses
W
50% of wins
L
0% of losses
Decision
4 wins, 3 losses
W
40% of wins
L
75% of losses
UFC
6win4loss0draw0NC
WinsLosses
1 (17%)KO/TKO(25%) 1
1 (17%)Submission(0%) 0
4 (67%)Decision(75%) 3
Non-UFC
4win0loss0draw0NC
WinsLosses
0 (0%)KO/TKO() 0
4 (100%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
St-Pierre
Serra
11
UFC fights
10
98.5 min · 9.0 avg
Octagon time
126.2 min · 12.6 avg
24y 6m
Career length
28y 4m
UFC schedule strength

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

St-Pierre
Serra
214W–29L · 88.1%
Overall
136W–39L · 77.7%
169W–21L · 88.9%
Wins
86W–27L · 76.1%
45W–8L · 84.9%
Losses
50W–12L · 80.6%
Non-UFC schedule strength
St-Pierre
Serra
56W–21L · 72.7%
Overall
0W–0L
56W–21L · 72.7%
Wins
0W–0L
0W–0L
Losses
0W–0L
Distance striking
St-Pierre
Serra
5.38
Landed / min
1.50
46.4%
Accuracy
23.4%
71.1%
Defense
62.5%
0.61
Knockdowns / 15 min
0.36
35.7%
Time at distance
29.1%
Grappling & control
St-Pierre
Serra
3.96
Takedowns / 15 min
2.61
81.3%
Takedown accuracy
20.4%
84.8%
Takedown defense
42.9%
2.13
Sub attempts / 15 min
1.19
89.3%
Control share
75.0%
Strike target map
St-Pierre
  • Head69%(275)div 65%
  • Body17%(66)div 20%
  • Legs15%(58)div 15%
Serra
  • Head50%(90)div 65%
  • Body32%(57)div 20%
  • Legs18%(33)div 15%

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

Georges St-Pierre
CloseSSTDKDCtrl

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

Matt Serra
CloseSSTDKDCtrl

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