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UFC 101: Declaration
BJ Penn
BJ Penn
13-5-1 · USA
VS
Kenny Florian
Kenny Florian
11-3 · USA
August 8, 2009 · Philadelphia, Pennsylvania, USA
Lightweight · 5 rounds · Main event
155.0lb
Weigh-in
155.0lb
BJ Penn def. Kenny Florian by SUB (Rear Naked Choke), R4 3:54
Performance
Round by round
SSTDKDCtrl
R1
Penn11/200/101:22
Florian7/190/300:47
R2
Penn7/210/000:00
Florian6/140/301:50
R3
Penn22/310/100:03
Florian4/160/402:07
R4 · 3:54
Penn17/221/102:45
Florian2/90/500:27
Total
Penn57/941/304:10
Florian19/580/1505:11

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 probabilityFlorian
39.4%60.6%
KO / TKO
26%
Submission
14%
Decision
61%
Expected fight time: 19.4 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 Florian. Tap a bar for why.

Predicted outcomes
Penn39%
Wins by
Model
Equity
Mkt
KO / TKO11%27%
Submission4%11%
Decision24%62%
Predicted output
Sig. strikes40 (2252)act 57
Takedowns0.4 (0.01.6)act 1
Florian61%
Wins by
Model
Equity
Mkt
KO / TKO15%24%
Submission10%16%
Decision36%60%
Predicted output
Sig. strikes73 (4295)act 19
Takedowns0.8 (0.02.8)act 0
Combined totals~113 sig strikes~1.2 takedownsmkt —
How it ends
mkt —
R112%
R29%
R39%
R45%
R54%
Distance61%
Fighter props
Most sig. strikestie 0.8%
Penn
23.3%+326
Florian
-32675.9%
Most takedownstie 44.7%
Penn
17.5%+216
Florian
-21637.8%
Significant strikes — over/under
Penn
Expected: 39.6
39.5
Over 39.5
42.7%
+134
Under 39.5
57.3%
-134
050100
Florian
Expected: 73.3
73.5
Over 73.5
42.3%
+136
Under 73.5
57.7%
-136
092184
Takedowns — over/under
Penn
Expected: 0.4
0.5
Over 0.5
25.2%
+297
Under 0.5
74.8%
-297
035
Florian
Expected: 0.8
1
Over 1
28.8%
+194
Exactly 1
15.5%
push
Under 1
55.7%
-194
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 19.4 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
Penn39.4%68.7%−29.3-255
Florian60.6%31.3%+29.3+205

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
72.9Striking74.1
Florian +1.2
63.1Grappling77.8
Florian +14.7
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PennFlorian
Tale of the tape
Ratings (Elo)
1591
Pound-for-pound
1620
1611
Divisional
1605
1507
Striking offense
1502
1524
Striking defense
1555
1523
Grappling offense
1540
1538
Grappling defense
1505
Physical
30 yrs
Age
33 yrs
5'9"
Height
5'10"
70"
Reach
74"
Orthodox
Stance
Southpaw
Striking (UFC career)
2.95
Strikes landed / min
2.84
62%
Strike accuracy
52%
2.27
Strikes absorbed / min
1.70
55%
Strike defense
61%
Grappling (UFC career)
1.80
Takedowns / 15 min
3.05
67%
Takedown accuracy
56%
64%
Takedown defense
63%
0.9
Sub attempts / 15 min
1.6
Form & résumé
69%
UFC win rate
82%
-1
Win/loss streak
+6
60%
Last-5 win rate
100%
89%
Finish rate
89%
Recent opp. quality
189
Days since last fight
266
Recent form (last 5 UFC)
BJ Penn
  • LGeorges St-PierreKO/TKO R4
    Close +1496mo before
  • WSean SherkKO/TKO R3
    Close -2531y 2mo before
  • WJoe StevensonSUB R2
    Close -3401y 7mo before
  • WJens PulverSUB R2
    Close -3402y 2mo before
  • LMatt HughesKO/TKO R3
    Close +1952y 10mo before
Kenny Florian
  • WJoe StevensonSUB R1
    Close -2089mo before
  • WRoger HuertaU-DEC R3
    Close -1491y before
  • WJoe LauzonKO/TKO R2
    Close -2031y 4mo before
  • WDin ThomasSUB R1
    Close -1551y 11mo before
  • WAlvin RobinsonKO/TKO R1
    Close -2332y 1mo before
Penn — win / loss by method
Record: 13-5-1

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, 2 losses
W
38% of wins
L
40% 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
60% of losses
UFC
9win4loss1draw0NC
WinsLosses
5 (56%)KO/TKO(50%) 2
3 (33%)Submission(0%) 0
1 (11%)Decision(50%) 2
Non-UFC
4win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (50%)Submission(0%) 0
2 (50%)Decision(100%) 1
Florian — win / loss by method
Record: 11-3-0

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
4 wins, 1 loss
W
36% of wins
L
33% of losses
Submission
6 wins, 0 losses
W
55% of wins
L
0% of losses
Decision
1 win, 2 losses
W
9% of wins
L
67% of losses
UFC
9win2loss0draw0NC
WinsLosses
3 (33%)KO/TKO(50%) 1
5 (56%)Submission(0%) 0
1 (11%)Decision(50%) 1
Non-UFC
2win1loss0draw0NC
WinsLosses
1 (50%)KO/TKO(0%) 0
1 (50%)Submission(0%) 0
0 (0%)Decision(100%) 1

Profiles

Experience
Penn
Florian
14
UFC fights
11
167.0 min · 11.9 avg
Octagon time
93.5 min · 8.5 avg
25y 3m
Career length
23y 6m
UFC schedule strength

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

Penn
Florian
232W–33L · 87.5%
Overall
172W–29L · 85.6%
153W–25L · 86.0%
Wins
129W–27L · 82.7%
79W–8L · 90.8%
Losses
43W–2L · 95.6%
Non-UFC schedule strength
Penn
Florian
43W–8L · 84.3%
Overall
22W–3L · 88.0%
38W–8L · 82.6%
Wins
0W–1L · 0.0%
5W–0L · 100.0%
Losses
22W–2L · 91.7%
Distance striking
Penn
Florian
4.73
Landed / min
3.23
53.1%
Accuracy
42.5%
63.9%
Defense
77.0%
0.45
Knockdowns / 15 min
0.00
33.9%
Time at distance
32.1%
Grappling & control
Penn
Florian
1.80
Takedowns / 15 min
3.05
66.7%
Takedown accuracy
55.9%
64.4%
Takedown defense
63.2%
0.90
Sub attempts / 15 min
1.60
42.6%
Control share
46.0%
Strike target map
Penn
  • Head74%(363)div 66%
  • Body19%(94)div 18%
  • Legs7%(36)div 16%
Florian
  • Head68%(181)div 66%
  • Body21%(57)div 18%
  • Legs11%(28)div 16%

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.

Kenny Florian
CloseSSTDKDCtrl

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