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UFC 82: Pride of a Champion
Andrei Arlovski
Andrei Arlovski
12-5 · BLR
VS
Jake O'Brien
Jake O'Brien
10-0 · USA
March 1, 2008 · Columbus, Ohio, USA
Heavyweight · 3 rounds
241.0lb
Weigh-in
231.5lb
Andrei Arlovski def. Jake O'Brien by KO/TKO (Punches), R2 4:17
Performance
Round by round
SSTDKDCtrl
R1
Arlovski0/70/000:46
O'Brien1/41/903:30
R2 · 4:17
Arlovski14/281/101:13
O'Brien3/81/501:14
Total
Arlovski14/351/101:59
O'Brien4/122/1404:44

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
ArlovskiWin probabilityO'Brien
22.6%77.4%
KO / TKO
16%
Submission
59%
Decision
25%
Expected fight time: 6.6 min
What drives the pick

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

Predicted outcomes
Arlovski23%
Wins by
Model
Equity
Mkt
KO / TKO4%18%
Submission15%65%
Decision4%17%
Predicted output
Sig. strikes22 (1229)act 14
Takedowns0.0 (0.00.0)act 1
O'Brien77%
Wins by
Model
Equity
Mkt
KO / TKO11%15%
Submission45%58%
Decision21%27%
Predicted output
Sig. strikes23 (1230)act 4
Takedowns0.8 (0.02.6)act 2
Combined totals~45 sig strikes~0.9 takedownsmkt —
How it ends
mkt —
R163%
R23%
R39%
Distance25%
Fighter props
Most sig. strikestie 2.4%
Arlovski
47.0%+108
O'Brien
-10850.7%
Most takedownstie 36.9%
Arlovski
1.1%+5850
O'Brien
-585062.0%
Significant strikes — over/under
Arlovski
Expected: 22.2
22
Over 22
41.6%
+133
Exactly 22
2.9%
push
Under 22
55.5%
-133
02856
O'Brien
Expected: 23.1
23
Over 23
41.4%
+135
Exactly 23
2.8%
push
Under 23
55.8%
-135
02958
Takedowns — over/under
Arlovski
Expected: 0.0
0
Over 0
2.4%
Exactly 0
97.6%
push
Under 0
0.0%
035
O'Brien
Expected: 0.8
1
Over 1
34.0%
+110
Exactly 1
28.8%
push
Under 1
37.2%
-110
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 6.6 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
Arlovski22.6%76.1%−53.5-411
O'Brien77.4%23.9%+53.5+296

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
67.3Striking69.6
O'Brien +2.3
52.1Grappling55.2
O'Brien +3.1
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
ArlovskiO'Brien
Tale of the tape
Ratings (Elo)
1588
Pound-for-pound
1569
1587
Divisional
1569
1529
Striking offense
1469
1530
Striking defense
1505
1505
Grappling offense
1553
1554
Grappling defense
1550
Physical
29 yrs
Age
23 yrs
6'3"
Height
6'3"
77"
Reach
76"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.27
Strikes landed / min
1.42
36%
Strike accuracy
41%
2.45
Strikes absorbed / min
0.72
65%
Strike defense
77%
Grappling (UFC career)
0.18
Takedowns / 15 min
7.95
33%
Takedown accuracy
79%
92%
Takedown defense
0%
0.9
Sub attempts / 15 min
0.4
Form & résumé
69%
UFC win rate
100%
+2
Win/loss streak
+3
60%
Last-5 win rate
100%
89%
Finish rate
33%
Recent opp. quality
315
Days since last fight
401
Recent form (last 5 UFC)
Andrei Arlovski
  • WFabricio WerdumU-DEC R3
    Close -12010mo before
  • WMarcio CruzKO/TKO R1
    Close -4701y 2mo before
  • LTim SylviaU-DEC R5
    Close -2851y 8mo before
  • LTim SylviaKO/TKO R1
    Close -4151y 11mo before
  • WPaul BuentelloKO/TKO R1
    2y 5mo before
Jake O'Brien
  • WHeath HerringU-DEC R3
    Close +3251y 1mo before
  • WJosh ShockmanU-DEC R3
    1y 3mo before
  • WKristof MidouxKO/TKO R2
    Close -4001y 6mo before
Arlovski — win / loss by method
Record: 12-5-0

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
8 wins, 4 losses
W
67% of wins
L
80% of losses
Submission
3 wins, 0 losses
W
25% of wins
L
0% of losses
Decision
1 win, 1 loss
W
8% of wins
L
20% of losses
UFC
9win4loss0draw0NC
WinsLosses
6 (67%)KO/TKO(75%) 3
2 (22%)Submission(0%) 0
1 (11%)Decision(25%) 1
Non-UFC
3win1loss0draw0NC
WinsLosses
2 (67%)KO/TKO(100%) 1
1 (33%)Submission(0%) 0
0 (0%)Decision(0%) 0
O'Brien — win / loss by method
Record: 10-0-0

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, 0 losses
W
70% of wins
L
Submission
1 win, 0 losses
W
10% of wins
L
Decision
2 wins, 0 losses
W
20% of wins
L
UFC
3win0loss0draw0NC
WinsLosses
1 (33%)KO/TKO() 0
0 (0%)Submission() 0
2 (67%)Decision() 0
Non-UFC
7win0loss0draw0NC
WinsLosses
6 (86%)KO/TKO() 0
1 (14%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
Arlovski
O'Brien
13
UFC fights
3
84.8 min · 6.5 avg
Octagon time
35.9 min · 12.0 avg
27y 4m
Career length
21y 2m
UFC schedule strength

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

Arlovski
O'Brien
166W–37L · 81.8%
Overall
34W–16L · 68.0%
105W–29L · 78.4%
Wins
34W–16L · 68.0%
61W–8L · 88.4%
Losses
0W–0L
Non-UFC schedule strength
Arlovski
O'Brien
11W–18L · 37.9%
Overall
29W–48L · 37.7%
11W–18L · 37.9%
Wins
29W–48L · 37.7%
0W–0L
Losses
0W–0L
Distance striking
Arlovski
O'Brien
3.38
Landed / min
0.21
32.3%
Accuracy
6.7%
69.3%
Defense
82.5%
1.42
Knockdowns / 15 min
0.00
76.2%
Time at distance
26.3%
Grappling & control
Arlovski
O'Brien
0.18
Takedowns / 15 min
7.95
33.3%
Takedown accuracy
79.2%
91.7%
Takedown defense
0.0%
0.88
Sub attempts / 15 min
0.42
26.5%
Control share
95.7%
Strike target map
Arlovski
  • Head58%(162)div 66%
  • Body6%(16)div 17%
  • Legs36%(99)div 17%
O'Brien
  • Head96%(49)div 66%
  • Body4%(2)div 17%
  • Legs0%(0)div 17%

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

Andrei Arlovski
CloseSSTDKDCtrl

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

Jake O'Brien
CloseSSTDKDCtrl

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