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UFC 146: Dos Santos vs Mir
Roy Nelson
Roy Nelson
15-7 · USA
VS
Dave Herman
Dave Herman
21-3 · USA
May 26, 2012 · Las Vegas, Nevada, USA
Heavyweight · 3 rounds
254.0lb
Weigh-in
233.0lb
Roy Nelson def. Dave Herman by KO/TKO (Punch), R1 0:51
Performance
Round by round
SSTDKDCtrl
R1 · 0:51
Nelson2/40/010:02
Herman3/80/000:00
Total
Nelson2/40/010:02
Herman3/80/000:00

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
NelsonWin probabilityHerman
21.1%78.9%
KO / TKO
43%
Submission
16%
Decision
41%
Expected fight time: 9.8 min
What drives the pick

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

Predicted outcomes
Nelson21%
Wins by
Model
Equity
Mkt
KO / TKO8%38%
Submission4%19%
Decision9%43%
Predicted output
Sig. strikes34 (1945)act 2
Takedowns0.3 (0.01.5)act 0
Herman79%
Wins by
Model
Equity
Mkt
KO / TKO35%44%
Submission12%16%
Decision32%40%
Predicted output
Sig. strikes47 (2661)act 3
Takedowns0.4 (0.01.7)act 0
Combined totals~81 sig strikes~0.8 takedownsmkt —
How it ends
mkt —
R131%
R212%
R316%
Distance41%
Fighter props
Most sig. strikestie 1.3%
Nelson
35.4%+178
Herman
-17863.3%
Most takedownstie 58.2%
Nelson
19.3%+116
Herman
-11622.4%
Significant strikes — over/under
Nelson
Expected: 34.4
34.5
Over 34.5
42.4%
+136
Under 34.5
57.6%
-136
04487
Herman
Expected: 46.8
47
Over 47
41.5%
+138
Exactly 47
1.4%
push
Under 47
57.1%
-138
059118
Takedowns — over/under
Nelson
Expected: 0.3
0.5
Over 0.5
23.4%
+327
Under 0.5
76.6%
-327
035
Herman
Expected: 0.4
0.5
Over 0.5
26.3%
+280
Under 0.5
73.7%
-280
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 9.8 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
Nelson21.1%60.9%−39.8-162
Herman78.9%39.1%+39.8+152

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
47.0Striking71.9
Herman +24.9
29.7Grappling46.0
Herman +16.3
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
NelsonHerman
Tale of the tape
Ratings (Elo)
1520
Pound-for-pound
1550
1520
Divisional
1550
1512
Striking offense
1496
1498
Striking defense
1493
Grappling offense
Grappling defense
Physical
35 yrs
Age
27 yrs
6'0"
Height
6'4"
73"
Reach
77"
Orthodox
Stance
Orthodox
Striking (UFC career)
2.23
Strikes landed / min
6.17
39%
Strike accuracy
62%
5.11
Strikes absorbed / min
4.71
48%
Strike defense
46%
Grappling (UFC career)
0.74
Takedowns / 15 min
0.87
25%
Takedown accuracy
100%
42%
Takedown defense
60%
0.2
Sub attempts / 15 min
0.0
Form & résumé
50%
UFC win rate
50%
-1
Win/loss streak
-1
40%
Last-5 win rate
50%
100%
Finish rate
100%
Recent opp. quality
112
Days since last fight
101
Recent form (last 5 UFC)
Roy Nelson
  • LFabricio WerdumU-DEC R3
    Close +1404mo before
  • WMirko FilipovicKO/TKO R3
    Close -2407mo before
  • LFrank MirU-DEC R3
    Close +1101y before
  • LJunior Dos SantosU-DEC R3
    Close +3151y 10mo before
  • WStefan StruveKO/TKO R1
    Close -3502y 2mo before
Dave Herman
  • LStefan StruveKO/TKO R2
    Close -1113mo before
  • WJon Olav EinemoKO/TKO R2
    Close -14311mo before
Nelson — win / loss by method
Record: 15-7-0

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
10 wins, 1 loss
W
67% of wins
L
14% of losses
Submission
4 wins, 0 losses
W
27% of wins
L
0% of losses
Decision
1 win, 6 losses
W
7% of wins
L
86% of losses
UFC
3win3loss0draw0NC
WinsLosses
3 (100%)KO/TKO(0%) 0
0 (0%)Submission(0%) 0
0 (0%)Decision(100%) 3
Non-UFC
12win4loss0draw0NC
WinsLosses
7 (58%)KO/TKO(25%) 1
4 (33%)Submission(0%) 0
1 (8%)Decision(75%) 3
Herman — win / loss by method
Record: 21-3-0

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
17 wins, 2 losses
W
81% of wins
L
67% of losses
Submission
3 wins, 0 losses
W
14% of wins
L
0% of losses
Decision
1 win, 0 losses
W
5% of wins
L
0% of losses
DQ / other
0 wins, 1 loss
W
0% of wins
L
33% of losses
UFC
1win1loss0draw0NC
WinsLosses
1 (100%)KO/TKO(100%) 1
0 (0%)Submission(0%) 0
0 (0%)Decision(0%) 0
Non-UFC
20win2loss0draw0NC
WinsLosses
16 (80%)KO/TKO(50%) 1
3 (15%)Submission(0%) 0
1 (5%)Decision(0%) 0
0 (0%)DQ / other(50%) 1

Profiles

Experience
Nelson
Herman
6
UFC fights
2
60.9 min · 10.2 avg
Octagon time
17.2 min · 8.6 avg
22y 3m
Career length
19y 7m
UFC schedule strength

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

Nelson
Herman
89W–23L · 79.5%
Overall
28W–6L · 82.4%
50W–12L · 80.6%
Wins
6W–1L · 85.7%
39W–11L · 78.0%
Losses
22W–5L · 81.5%
Non-UFC schedule strength
Nelson
Herman
158W–71L · 69.0%
Overall
136W–58L · 70.1%
90W–53L · 62.9%
Wins
122W–49L · 71.3%
68W–18L · 79.1%
Losses
14W–9L · 60.9%
Distance striking
Nelson
Herman
2.78
Landed / min
6.45
33.2%
Accuracy
62.4%
50.9%
Defense
50.0%
0.49
Knockdowns / 15 min
0.87
50.7%
Time at distance
70.4%
Grappling & control
Nelson
Herman
0.74
Takedowns / 15 min
0.87
25.0%
Takedown accuracy
100.0%
41.7%
Takedown defense
60.0%
0.25
Sub attempts / 15 min
0.00
60.3%
Control share
22.9%
Strike target map
Nelson
  • Head84%(114)div 67%
  • Body10%(13)div 17%
  • Legs7%(9)div 16%
Herman
  • Head46%(49)div 67%
  • Body23%(24)div 17%
  • Legs31%(33)div 16%

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

Roy Nelson
CloseSSTDKDCtrl

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

Dave Herman
CloseSSTDKDCtrl

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