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UFC 94: St-Pierre vs Penn 2
VS
BJ Penn
BJ Penn
13-4-1 · USA
January 31, 2009 · Las Vegas, Nevada, USA
Welterweight · 5 rounds · Main event
170.0lb
Weigh-in
168.0lb
Georges St-Pierre def. BJ Penn by KO/TKO (to Corner Stoppage), R4 5:00
Performance
Round by round
SSTDKDCtrl
R1
St-Pierre34/440/302:14
Penn12/260/000:00
R2
St-Pierre18/281/104:29
Penn3/40/000:00
R3
St-Pierre19/242/203:46
Penn1/50/100:26
R4
St-Pierre21/261/104:29
Penn0/20/000:00
Total
St-Pierre92/1224/7014:58
Penn16/370/100:26

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 probabilityPenn
79.2%20.8%
KO / TKO
54%
Submission
1%
Decision
46%
Expected fight time: 19.5 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 Penn. Tap a bar for why.

Predicted outcomes
St-Pierre79%
Wins by
Model
Equity
Mkt
KO / TKO41%52%
Submission0%1%
Decision38%47%
Predicted output
Sig. strikes133 (77173)act 92
Takedowns2.2 (0.04.9)act 4
Penn21%
Wins by
Model
Equity
Mkt
KO / TKO13%61%
Submission0%1%
Decision8%38%
Predicted output
Sig. strikes35 (2046)act 16
Takedowns0.1 (0.00.0)act 0
Combined totals~168 sig strikes~2.3 takedownsmkt —
How it ends
mkt —
R13%
R210%
R321%
R412%
R58%
Distance46%
Fighter props
Most sig. strikes
St-Pierre
93.3%-1448
Penn
+14486.4%
Most takedownstie 15.1%
St-Pierre
82.6%-3631
Penn
+36312.3%
Significant strikes — over/under
St-Pierre
Expected: 133.0
133
Over 133
42.2%
+136
Exactly 133
0.5%
push
Under 133
57.3%
-136
0167333
Penn
Expected: 35.4
35.5
Over 35.5
42.4%
+136
Under 35.5
57.6%
-136
04589
Takedowns — over/under
St-Pierre
Expected: 2.2
2
Over 2
43.5%
-122
Exactly 2
20.8%
push
Under 2
35.8%
+122
047
Penn
Expected: 0.1
0
Over 0
9.3%
Exactly 0
90.7%
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 19.5 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-Pierre79.2%61.0%+18.2-169
Penn20.8%39.0%−18.2+149

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
85.3Striking77.3
St-Pierre +8.0
91.2Grappling66.7
St-Pierre +24.5
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
St-PierrePenn
Tale of the tape
Ratings (Elo)
1660
Pound-for-pound
1605
1653
Divisional
1498
1524
Striking offense
1511
1554
Striking defense
1532
1546
Grappling offense
1529
1561
Grappling defense
1542
Physical
27 yrs
Age
30 yrs
5'11"
Height
5'9"
76"
Reach
70"
Orthodox
Stance
Orthodox
Striking (UFC career)
4.29
Strikes landed / min
3.25
57%
Strike accuracy
63%
1.22
Strikes absorbed / min
1.95
67%
Strike defense
60%
Grappling (UFC career)
4.17
Takedowns / 15 min
2.04
80%
Takedown accuracy
69%
87%
Takedown defense
67%
1.7
Sub attempts / 15 min
1.0
Form & résumé
85%
UFC win rate
75%
+4
Win/loss streak
+3
80%
Last-5 win rate
60%
55%
Finish rate
89%
Recent opp. quality
175
Days since last fight
252
Recent form (last 5 UFC)
Georges St-Pierre
  • WJon FitchU-DEC R5
    Close -3606mo before
  • WMatt SerraKO/TKO R2
    Close -4489mo before
  • WMatt HughesSUB R2
    Close -1991y 1mo before
  • WJosh KoscheckU-DEC R3
    Close -2861y 5mo before
  • LMatt SerraKO/TKO R1
    Close -13001y 10mo before
BJ Penn
  • WSean SherkKO/TKO R3
    Close -2538mo before
  • WJoe StevensonSUB R2
    Close -3401y before
  • WJens PulverSUB R2
    Close -3401y 7mo before
  • LMatt HughesKO/TKO R3
    Close +1952y 4mo before
  • LGeorges St-PierreS-DEC R3
    Close -1152y 11mo before
St-Pierre — win / loss by method
Record: 17-2-0

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
7 wins, 1 loss
W
41% of wins
L
50% of losses
Submission
5 wins, 1 loss
W
29% of wins
L
50% of losses
Decision
5 wins, 0 losses
W
29% of wins
L
0% of losses
UFC
11win2loss0draw0NC
WinsLosses
4 (36%)KO/TKO(50%) 1
2 (18%)Submission(50%) 1
5 (45%)Decision(0%) 0
Non-UFC
6win0loss0draw0NC
WinsLosses
3 (50%)KO/TKO() 0
3 (50%)Submission() 0
0 (0%)Decision() 0
Penn — win / loss by method
Record: 13-4-1

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
38% of wins
L
25% of losses
Submission
5 wins, 0 losses
W
38% of wins
L
0% of losses
Decision
3 wins, 3 losses
W
23% of wins
L
75% of losses
UFC
9win3loss1draw0NC
WinsLosses
5 (56%)KO/TKO(33%) 1
3 (33%)Submission(0%) 0
1 (11%)Decision(67%) 2
Non-UFC
4win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (50%)Submission(0%) 0
2 (50%)Decision(100%) 1

Profiles

Experience
St-Pierre
Penn
13
UFC fights
13
133.2 min · 10.2 avg
Octagon time
147.0 min · 11.3 avg
24y 6m
Career length
25y 3m
UFC schedule strength

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

St-Pierre
Penn
243W–35L · 87.4%
Overall
215W–31L · 87.4%
198W–27L · 88.0%
Wins
153W–25L · 86.0%
45W–8L · 84.9%
Losses
62W–6L · 91.2%
Non-UFC schedule strength
St-Pierre
Penn
56W–21L · 72.7%
Overall
43W–8L · 84.3%
56W–21L · 72.7%
Wins
38W–8L · 82.6%
0W–0L
Losses
5W–0L · 100.0%
Distance striking
St-Pierre
Penn
5.81
Landed / min
4.85
48.4%
Accuracy
54.4%
72.9%
Defense
66.7%
0.79
Knockdowns / 15 min
0.51
35.6%
Time at distance
36.5%
Grappling & control
St-Pierre
Penn
4.17
Takedowns / 15 min
2.04
80.4%
Takedown accuracy
69.0%
87.2%
Takedown defense
67.3%
1.69
Sub attempts / 15 min
1.02
89.8%
Control share
50.1%
Strike target map
St-Pierre
  • Head70%(401)div 64%
  • Body17%(98)div 20%
  • Legs13%(73)div 15%
Penn
  • Head74%(355)div 64%
  • Body19%(90)div 20%
  • Legs7%(32)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.

BJ Penn
CloseSSTDKDCtrl

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