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UFC 141: Lesnar vs Overeem
Ross Pearson
Ross Pearson
12-5 · GBR
VS
Junior Assuncao
Junior Assuncao
13-4 · BRA
December 30, 2011 · Las Vegas, Nevada, USA
Featherweight · 3 rounds
145.0lb
Weigh-in
145.0lb
Ross Pearson def. Junior Assuncao by U-DEC, R3 5:00
Performance
Round by round
SSTDKDCtrl
R1
Pearson13/300/000:00
Assuncao13/241/401:06
R2
Pearson19/341/101:11
Assuncao19/281/701:45
R3
Pearson20/250/000:45
Assuncao11/171/702:49
Total
Pearson52/891/101:56
Assuncao43/693/1805:40

Scorecards

Pearson vs Assuncao

RdAdalaide ByrdGlenn TrowbridgeJunichiro KamijoCommunity
R19-1010-99-109.3-9.7
R210-910-910-910-9
R310-910-910-99.8-9.2
Total29-2830-2729-2829.1-27.9

Media (6 cards) · avg 29.527.7 · 6 Pearson · 0 Assuncao

Official cards + public consensus via MMA Decisions. Per round: Pearson-Assuncao.

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
PearsonWin probabilityAssuncao
41.6%58.4%
KO / TKO
22%
Submission
24%
Decision
53%
Expected fight time: 10.5 min
What drives the pick

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

Predicted outcomes
Pearson42%
Wins by
Model
Equity
Mkt
KO / TKO10%23%
Submission9%21%
Decision23%56%
Predicted output
Sig. strikes37 (2149)act 52
Takedowns0.2 (0.00.8)act 1
Assuncao58%
Wins by
Model
Equity
Mkt
KO / TKO12%21%
Submission16%27%
Decision30%52%
Predicted output
Sig. strikes46 (2660)act 43
Takedowns0.7 (0.02.5)act 3
Combined totals~83 sig strikes~0.9 takedownsmkt —
How it ends
mkt —
R130%
R28%
R39%
Distance53%
Fighter props
Most sig. strikestie 1.3%
Pearson
39.7%+148
Assuncao
-14859.0%
Most takedownstie 45.5%
Pearson
11.5%+373
Assuncao
-37343.0%
Significant strikes — over/under
Pearson
Expected: 37.3
37.5
Over 37.5
42.1%
+137
Under 37.5
57.9%
-137
04794
Assuncao
Expected: 46.0
46
Over 46
41.7%
+136
Exactly 46
1.4%
push
Under 46
56.8%
-136
058115
Takedowns — over/under
Pearson
Expected: 0.2
0
Over 0
17.8%
Exactly 0
82.2%
push
Under 0
0.0%
035
Assuncao
Expected: 0.7
0.5
Over 0.5
48.1%
+108
Under 0.5
51.9%
-108
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 10.5 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
Pearson41.6%75.1%−33.5-325
Assuncao58.4%24.9%+33.5+295

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
70.9Striking76.3
Assuncao +5.5
33.4Grappling61.3
Assuncao +28.0
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
PearsonAssuncao
Tale of the tape
Ratings (Elo)
1543
Pound-for-pound
1510
1509
Divisional
1524
1505
Striking offense
1498
1519
Striking defense
1504
1481
Grappling offense
1507
1510
Grappling defense
1494
Physical
27 yrs
Age
30 yrs
5'8"
Height
5'9"
69"
Reach
72"
Orthodox
Stance
Orthodox
Striking (UFC career)
4.34
Strikes landed / min
3.55
38%
Strike accuracy
63%
2.84
Strikes absorbed / min
1.31
73%
Strike defense
47%
Grappling (UFC career)
0.78
Takedowns / 15 min
2.13
20%
Takedown accuracy
36%
73%
Takedown defense
75%
0.0
Sub attempts / 15 min
1.1
Form & résumé
67%
UFC win rate
50%
-1
Win/loss streak
+1
60%
Last-5 win rate
50%
25%
Finish rate
50%
Recent opp. quality
125
Days since last fight
97
Recent form (last 5 UFC)
Ross Pearson
  • LEdson BarbozaS-DEC R3
    Close +2484mo before
  • WSpencer FisherU-DEC R3
    Close -18510mo before
  • LCole MillerSUB R2
    Close -2101y 3mo before
  • WDennis SiverU-DEC R3
    Close -2201y 9mo before
  • WAaron RileyKO/TKO R2
    Close +1652y 1mo before
Junior Assuncao
  • WEddie YaginU-DEC R3
    Close +1253mo before
  • LNate DiazSUB R1
    Close +1654y 3mo before
  • WDavid LeeSUB R2
    Close -2004y 8mo before
  • LKurt PellegrinoSUB R1
    Close +2205y 3mo before
Pearson — 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
3 wins, 1 loss
W
25% of wins
L
20% of losses
Submission
5 wins, 2 losses
W
42% of wins
L
40% of losses
Decision
4 wins, 2 losses
W
33% of wins
L
40% of losses
UFC
4win2loss0draw0NC
WinsLosses
1 (25%)KO/TKO(0%) 0
0 (0%)Submission(50%) 1
3 (75%)Decision(50%) 1
Non-UFC
8win3loss0draw0NC
WinsLosses
2 (25%)KO/TKO(33%) 1
5 (63%)Submission(33%) 1
1 (13%)Decision(33%) 1
Assuncao — win / loss by method
Record: 13-4-0

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
3 wins, 0 losses
W
23% of wins
L
0% of losses
Submission
6 wins, 2 losses
W
46% of wins
L
50% of losses
Decision
4 wins, 2 losses
W
31% of wins
L
50% of losses
UFC
2win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
1 (50%)Submission(100%) 2
1 (50%)Decision(0%) 0
Non-UFC
11win2loss0draw0NC
WinsLosses
3 (27%)KO/TKO(0%) 0
5 (45%)Submission(0%) 0
3 (27%)Decision(100%) 2

Profiles

Experience
Pearson
Assuncao
6
UFC fights
4
76.5 min · 12.7 avg
Octagon time
28.1 min · 7.0 avg
21y 7m
Career length
22y 3m
UFC schedule strength

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

Pearson
Assuncao
102W–29L · 77.9%
Overall
35W–10L · 77.8%
78W–25L · 75.7%
Wins
20W–6L · 76.9%
24W–4L · 85.7%
Losses
15W–4L · 78.9%
Non-UFC schedule strength
Pearson
Assuncao
59W–53L · 52.7%
Overall
78W–55L · 58.6%
43W–47L · 47.8%
Wins
70W–48L · 59.3%
16W–6L · 72.7%
Losses
8W–7L · 53.3%
Distance striking
Pearson
Assuncao
4.56
Landed / min
3.51
32.9%
Accuracy
44.6%
78.0%
Defense
60.5%
0.00
Knockdowns / 15 min
0.53
67.9%
Time at distance
29.3%
Grappling & control
Pearson
Assuncao
0.78
Takedowns / 15 min
2.13
20.0%
Takedown accuracy
36.4%
73.3%
Takedown defense
75.0%
0.00
Sub attempts / 15 min
1.07
49.6%
Control share
77.7%
Strike target map
Pearson
  • Head62%(206)div 61%
  • Body20%(67)div 20%
  • Legs18%(59)div 19%
Assuncao
  • Head64%(64)div 61%
  • Body21%(21)div 20%
  • Legs15%(15)div 19%

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

Ross Pearson
CloseSSTDKDCtrl

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

Junior Assuncao
CloseSSTDKDCtrl

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