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UFC 80: Rapid Fire
BJ Penn
BJ Penn
11-4-1 · USA
VS
Joe Stevenson
Joe Stevenson
28-7 · USA
January 19, 2008 · Newcastle, England, United Kingdom
Lightweight · 5 rounds · Main event
154.0lb
Weigh-in
154.0lb
BJ Penn def. Joe Stevenson by SUB (Rear Naked Choke), R2 4:02
Performance
Round by round
SSTDKDCtrl
R1
Penn13/200/014:55
Stevenson8/100/000:00
R2 · 4:02
Penn28/490/011:39
Stevenson9/260/000:00
Total
Penn41/690/026:34
Stevenson17/360/000:00

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
PennWin probabilityStevenson
44.1%55.9%
KO / TKO
22%
Submission
28%
Decision
49%
Expected fight time: 15.9 min
What drives the pick

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

Predicted outcomes
Penn44%
Wins by
Model
Equity
Mkt
KO / TKO12%27%
Submission11%26%
Decision21%47%
Predicted output
Sig. strikes51 (2966)act 41
Takedowns0.4 (0.01.8)act 0
Stevenson56%
Wins by
Model
Equity
Mkt
KO / TKO10%18%
Submission17%31%
Decision29%51%
Predicted output
Sig. strikes61 (3580)act 17
Takedowns0.9 (0.03.1)act 0
Combined totals~112 sig strikes~1.3 takedownsmkt —
How it ends
mkt —
R130%
R28%
R36%
R44%
R53%
Distance49%
Fighter props
Most sig. strikestie 1.0%
Penn
40.8%+143
Stevenson
-14358.2%
Most takedownstie 46.4%
Penn
17.9%+198
Stevenson
-19835.6%
Significant strikes — over/under
Penn
Expected: 50.7
50.5
Over 50.5
42.7%
+134
Under 50.5
57.3%
-134
064127
Stevenson
Expected: 61.1
61
Over 61
42.1%
+135
Exactly 61
1.1%
push
Under 61
56.8%
-135
077153
Takedowns — over/under
Penn
Expected: 0.4
0.5
Over 0.5
24.9%
+302
Under 0.5
75.1%
-302
035
Stevenson
Expected: 0.9
1
Over 1
29.0%
+202
Exactly 1
12.4%
push
Under 1
58.7%
-202
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 15.9 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
Penn44.1%73.8%−29.7-340
Stevenson55.9%26.2%+29.7+265

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
73.9Striking72.1
Penn +1.9
69.3Grappling76.2
Stevenson +6.9
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PennStevenson
Tale of the tape
Ratings (Elo)
1571
Pound-for-pound
1604
1579
Divisional
1608
1497
Striking offense
1496
1529
Striking defense
1503
1530
Grappling offense
1529
1525
Grappling defense
1503
Physical
29 yrs
Age
25 yrs
5'9"
Height
5'7"
70"
Reach
70"
Orthodox
Stance
Orthodox
Striking (UFC career)
2.55
Strikes landed / min
2.15
61%
Strike accuracy
53%
1.82
Strikes absorbed / min
1.96
56%
Strike defense
65%
Grappling (UFC career)
2.44
Takedowns / 15 min
3.65
71%
Takedown accuracy
67%
66%
Takedown defense
29%
1.1
Sub attempts / 15 min
3.4
Form & résumé
70%
UFC win rate
83%
+1
Win/loss streak
+4
40%
Last-5 win rate
80%
86%
Finish rate
60%
Recent opp. quality
210
Days since last fight
147
Recent form (last 5 UFC)
BJ Penn
  • WJens PulverSUB R2
    Close -3407mo before
  • LMatt HughesKO/TKO R3
    Close +1951y 4mo before
  • LGeorges St-PierreS-DEC R3
    Close -1151y 11mo before
  • WMatt HughesSUB R1
    Close +2004y before
  • DCaol UnoS-DEC R5
    !Close -3504y 11mo before
Joe Stevenson
  • WKurt PellegrinoU-DEC R3
    Close -3005mo before
  • WMelvin GuillardSUB R1
    Close -1609mo before
  • WDokonjonosuke MishimaSUB R1
    1y 2mo before
  • WYves EdwardsKO/TKO R2
    Close +1601y 6mo before
  • LJosh NeerU-DEC R3
    Close -5001y 9mo before
Penn — win / loss by method
Record: 11-4-1

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
4 wins, 1 loss
W
36% of wins
L
25% of losses
Submission
4 wins, 0 losses
W
36% of wins
L
0% of losses
Decision
3 wins, 3 losses
W
27% of wins
L
75% of losses
UFC
7win3loss1draw0NC
WinsLosses
4 (57%)KO/TKO(33%) 1
2 (29%)Submission(0%) 0
1 (14%)Decision(67%) 2
Non-UFC
4win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (50%)Submission(0%) 0
2 (50%)Decision(100%) 1
Stevenson — win / loss by method
Record: 28-7-0

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
25% of wins
L
14% of losses
Submission
12 wins, 2 losses
W
43% of wins
L
29% of losses
Decision
9 wins, 4 losses
W
32% of wins
L
57% of losses
UFC
5win1loss0draw0NC
WinsLosses
1 (20%)KO/TKO(0%) 0
2 (40%)Submission(0%) 0
2 (40%)Decision(100%) 1
Non-UFC
23win6loss0draw0NC
WinsLosses
6 (26%)KO/TKO(17%) 1
10 (43%)Submission(33%) 2
7 (30%)Decision(50%) 3

Profiles

Experience
Penn
Stevenson
11
UFC fights
6
123.0 min · 11.2 avg
Octagon time
57.6 min · 9.6 avg
25y 3m
Career length
27y 2m
UFC schedule strength

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

Penn
Stevenson
153W–22L · 87.4%
Overall
99W–25L · 79.8%
91W–16L · 85.0%
Wins
83W–22L · 79.0%
62W–6L · 91.2%
Losses
16W–3L · 84.2%
Non-UFC schedule strength
Penn
Stevenson
43W–8L · 84.3%
Overall
104W–62L · 62.7%
38W–8L · 82.6%
Wins
75W–52L · 59.1%
5W–0L · 100.0%
Losses
29W–10L · 74.4%
Distance striking
Penn
Stevenson
3.42
Landed / min
2.60
46.0%
Accuracy
39.8%
63.8%
Defense
74.1%
0.24
Knockdowns / 15 min
0.00
30.4%
Time at distance
26.1%
Grappling & control
Penn
Stevenson
2.44
Takedowns / 15 min
3.65
71.4%
Takedown accuracy
66.7%
66.0%
Takedown defense
28.6%
1.10
Sub attempts / 15 min
3.39
45.7%
Control share
54.5%
Strike target map
Penn
  • Head66%(208)div 68%
  • Body24%(76)div 19%
  • Legs10%(30)div 13%
Stevenson
  • Head81%(101)div 68%
  • Body10%(13)div 19%
  • Legs8%(10)div 13%

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

BJ Penn
CloseSSTDKDCtrl

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

Joe Stevenson
CloseSSTDKDCtrl

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