The Ultimate Fight Fan
+ Log a bet
UFC 137: Penn vs Diaz
Nick Diaz
Nick Diaz
25-7 · USA
VS
BJ Penn
BJ Penn
16-7-2 · USA
October 29, 2011 · Las Vegas, Nevada, USA
Welterweight · 3 rounds · Main event
170.0lb
Weigh-in
169.0lb
Nick Diaz def. BJ Penn by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Diaz20/480/001:06
Penn33/481/101:24
R2
Diaz83/1440/001:45
Penn19/420/100:00
R3
Diaz75/1580/000:32
Penn36/740/200:01
Total
Diaz178/3500/003:23
Penn88/1641/401:25

Scorecards

Diaz vs Penn

RdAdalaide ByrdRoy SilbertTony WeeksCommunity
R19-109-109-109.1-9.9
R210-910-910-810-8.5
R310-910-910-910-8.9
Total29-2829-2829-2729.1-27.3

Media (7 cards) · avg 2927.9 · 7 Diaz · 0 Penn

Official cards + public consensus via MMA Decisions. Per round: Diaz-Penn.

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
DiazWin probabilityPenn
70.1%29.9%
KO / TKO
29%
Submission
3%
Decision
68%
Expected fight time: 12.9 min
What drives the pick

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

Predicted outcomes
Diaz70%
Wins by
Model
Equity
Mkt
KO / TKO21%30%
Submission2%3%
Decision47%67%
Predicted output
Sig. strikes65 (3784)act 178
Takedowns0.2 (0.01.0)act 0
Penn30%
Wins by
Model
Equity
Mkt
KO / TKO8%27%
Submission1%3%
Decision21%70%
Predicted output
Sig. strikes37 (2048)act 88
Takedowns0.6 (0.02.2)act 1
Combined totals~101 sig strikes~0.8 takedownsmkt —
How it ends
mkt —
R110%
R26%
R316%
Distance68%
Fighter props
Most sig. strikestie 0.9%
Diaz
73.7%-291
Penn
+29125.3%
Most takedownstie 51.8%
Diaz
14.3%+236
Penn
-23633.8%
Significant strikes — over/under
Diaz
Expected: 64.5
64.5
Over 64.5
42.5%
+135
Under 64.5
57.5%
-135
081162
Penn
Expected: 36.9
37
Over 37
41.4%
+137
Exactly 37
1.8%
push
Under 37
56.8%
-137
04793
Takedowns — over/under
Diaz
Expected: 0.2
0
Over 0
19.8%
Exactly 0
80.2%
push
Under 0
0.0%
035
Penn
Expected: 0.6
0.5
Over 0.5
38.4%
+161
Under 0.5
61.6%
-161
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 12.9 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
Diaz70.1%52.3%+17.8-115
Penn29.9%47.7%−17.8+105

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
70.1Striking70.6
Penn +0.5
66.2Grappling61.8
Diaz +4.3
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
DiazPenn
Tale of the tape
Ratings (Elo)
1545
Pound-for-pound
1616
1545
Divisional
1518
1504
Striking offense
1497
1545
Striking defense
1536
1517
Grappling offense
1528
1497
Grappling defense
1549
Physical
28 yrs
Age
32 yrs
6'1"
Height
5'9"
76"
Reach
70"
Southpaw
Stance
Orthodox
Striking (UFC career)
3.09
Strikes landed / min
2.72
40%
Strike accuracy
51%
2.05
Strikes absorbed / min
2.23
67%
Strike defense
60%
Grappling (UFC career)
1.88
Takedowns / 15 min
1.37
36%
Takedown accuracy
64%
67%
Takedown defense
78%
1.7
Sub attempts / 15 min
0.7
Form & résumé
60%
UFC win rate
67%
+2
Win/loss streak
0
40%
Last-5 win rate
40%
100%
Finish rate
92%
Recent opp. quality
1806
Days since last fight
245
Recent form (last 5 UFC)
Nick Diaz
  • WGleison TibauKO/TKO R2
    4y 11mo before
  • WJosh NeerSUB R3
    Close -2005y 2mo before
  • LSean SherkU-DEC R3
    Close +1505y 6mo before
  • LJoe RiggsU-DEC R3
    Close -1405y 9mo before
  • LDiego SanchezU-DEC R3
    6y before
BJ Penn
  • DJon FitchM-DEC R3
    !Close +1608mo before
  • WMatt HughesKO/TKO R1
    Close -21511mo before
  • LFrankie EdgarU-DEC R5
    Close -2701y 2mo before
  • LFrankie EdgarU-DEC R5
    Close -7801y 7mo before
  • WDiego SanchezKO/TKO R5
    Close -2681y 11mo before
Diaz — win / loss by method
Record: 25-7-0, 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
13 wins, 2 losses
W
52% of wins
L
29% of losses
Submission
8 wins, 0 losses
W
32% of wins
L
0% of losses
Decision
4 wins, 5 losses
W
16% of wins
L
71% of losses
UFC
6win4loss0draw0NC
WinsLosses
4 (67%)KO/TKO(0%) 0
2 (33%)Submission(0%) 0
0 (0%)Decision(100%) 4
Non-UFC
19win3loss0draw1NC
WinsLosses
9 (47%)KO/TKO(67%) 2
6 (32%)Submission(0%) 0
4 (21%)Decision(33%) 1
Penn — win / loss by method
Record: 16-7-2

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, 2 losses
W
44% of wins
L
29% of losses
Submission
6 wins, 0 losses
W
38% of wins
L
0% of losses
Decision
3 wins, 5 losses
W
19% of wins
L
71% of losses
UFC
12win6loss2draw0NC
WinsLosses
7 (58%)KO/TKO(33%) 2
4 (33%)Submission(0%) 0
1 (8%)Decision(67%) 4
Non-UFC
4win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (50%)Submission(0%) 0
2 (50%)Decision(100%) 1

Profiles

Experience
Diaz
Penn
10
UFC fights
20
103.8 min · 10.4 avg
Octagon time
273.9 min · 13.7 avg
24y 11m
Career length
25y 3m
UFC schedule strength

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

Diaz
Penn
158W–26L · 85.9%
Overall
334W–47L · 87.7%
80W–15L · 84.2%
Wins
230W–37L · 86.1%
78W–11L · 87.6%
Losses
104W–10L · 91.2%
Non-UFC schedule strength
Diaz
Penn
247W–99L · 71.4%
Overall
43W–8L · 84.3%
236W–94L · 71.5%
Wins
38W–8L · 82.6%
11W–5L · 68.8%
Losses
5W–0L · 100.0%
Distance striking
Diaz
Penn
4.86
Landed / min
3.61
31.0%
Accuracy
40.6%
73.4%
Defense
69.1%
0.43
Knockdowns / 15 min
0.33
32.7%
Time at distance
41.9%
Grappling & control
Diaz
Penn
1.88
Takedowns / 15 min
1.37
36.1%
Takedown accuracy
64.1%
67.2%
Takedown defense
78.4%
1.73
Sub attempts / 15 min
0.66
41.7%
Control share
38.0%
Strike target map
Diaz
  • Head75%(240)div 62%
  • Body20%(65)div 22%
  • Legs5%(16)div 16%
Penn
  • Head76%(566)div 62%
  • Body17%(127)div 22%
  • Legs7%(53)div 16%

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

Nick Diaz
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.