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UFC 20: Battle for the Gold
Wanderlei Silva
Wanderlei Silva
7-2 · BRA
VS
Tony Petarra
Tony Petarra
1-0-1 · USA
May 7, 1999 · Birmingham, Alabama, USA
Middleweight · 1 rounds
199.0lb
Weigh-in
196.0lb
Wanderlei Silva def. Tony Petarra by KO/TKO (Knees), R1 2:53
Performance
Round by round
SSTDKDCtrl
R1 · 2:53
Silva25/320/01
Petarra4/50/20
Total
Silva25/320/01
Petarra4/50/20

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
SilvaWin probabilityPetarra
90.8%9.2%
KO / TKO
13%
Submission
58%
Decision
29%
Expected fight time: 7.0 min
What drives the pick

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

Predicted outcomes
Silva91%
Wins by
Model
Equity
Mkt
KO / TKO13%14%
Submission52%57%
Decision26%29%
Predicted output
Sig. strikes48 (2763)act 25
Takedowns0.6 (0.01.9)act 0
Petarra9%
Wins by
Model
Equity
Mkt
KO / TKO0%3%
Submission6%67%
Decision3%30%
Predicted output
Sig. strikes33 (1843)act 4
Takedowns0.1 (0.00.4)act 0
Combined totals~81 sig strikes~0.6 takedownsmkt —
How it ends
mkt —
R161%
R22%
R38%
Distance29%
Fighter props
Most sig. strikestie 1.3%
Silva
66.8%-209
Petarra
+20931.9%
Most takedownstie 22.4%
Silva
73.5%-1754
Petarra
+17544.2%
Significant strikes — over/under
Silva
Expected: 48.4
48.5
Over 48.5
42.3%
+136
Under 48.5
57.7%
-136
061121
Petarra
Expected: 32.7
32.5
Over 32.5
42.9%
+133
Under 32.5
57.1%
-133
04182
Takedowns — over/under
Silva
Expected: 0.6
0.5
Over 0.5
81.6%
-445
Under 0.5
18.4%
+445
035
Petarra
Expected: 0.1
0
Over 0
14.0%
Exactly 0
86.0%
push
Under 0
0.0%
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 7.0 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

No market on record for this bout.

Trait web
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
SilvaPetarra
Tale of the tape
Ratings (Elo)
1500
Pound-for-pound
1501
1498
Divisional
1501
Striking offense
Striking defense
1483
Grappling offense
1500
1500
Grappling defense
1500
Physical
22 yrs
Age
32 yrs
5'11"
Height
5'11"
74"
Reach
Orthodox
Stance
Orthodox
Striking (UFC career)
1.36
Strikes landed / min
50%
Strike accuracy
9.55
Strikes absorbed / min
46%
Strike defense
Grappling (UFC career)
0.00
Takedowns / 15 min
Takedown accuracy
Takedown defense
0.0
Sub attempts / 15 min
Form & résumé
0%
UFC win rate
-1
Win/loss streak
0%
Last-5 win rate
Finish rate
Recent opp. quality
203
Days since last fight
Recent form (last 5 UFC)
Wanderlei Silva
  • LVitor BelfortKO/TKO R1
    7mo before
Tony Petarra
No prior UFC fights.
Silva — win / loss by method
Record: 7-2-0

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, 2 losses
W
100% of wins
L
100% of losses
Submission
0 wins, 0 losses
W
0% of wins
L
0% of losses
Decision
0 wins, 0 losses
W
0% of wins
L
0% of losses
UFC
0win1loss0draw0NC
WinsLosses
0 ()KO/TKO(100%) 1
0 ()Submission(0%) 0
0 ()Decision(0%) 0
Non-UFC
7win1loss0draw0NC
WinsLosses
7 (100%)KO/TKO(100%) 1
0 (0%)Submission(0%) 0
0 (0%)Decision(0%) 0
Petarra — win / loss by method
Record: 1-0-1

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
0 wins, 0 losses
W
0% of wins
L
Submission
1 win, 0 losses
W
100% of wins
L
Decision
0 wins, 0 losses
W
0% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
1win0loss1draw0NC
WinsLosses
0 (0%)KO/TKO() 0
1 (100%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
Silva
Petarra
1
UFC fights
0
0.7 min · 0.7 avg
Octagon time
29y 9m
Career length
UFC schedule strength

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

Silva
Petarra
5W–1L · 83.3%
Overall
0W–0L
Wins
5W–1L · 83.3%
Losses
Non-UFC schedule strength
Silva
Petarra
28W–14L · 66.7%
Overall
0W–2L · 0.0%
28W–14L · 66.7%
Wins
0W–2L · 0.0%
0W–0L
Losses
0W–0L
Distance striking
Silva
Petarra
1.36
Landed / min
50.0%
Accuracy
46.2%
Defense
0.00
Knockdowns / 15 min
100.0%
Time at distance
Grappling & control
Silva
Petarra
0.00
Takedowns / 15 min
Takedown accuracy
Takedown defense
0.00
Sub attempts / 15 min
Control share
Strike target map
Silva
  • Head0%(0)div 62%
  • Body0%(0)div 17%
  • Legs100%(1)div 22%
Petarra
  • Head0%(0)div 62%
  • Body0%(0)div 17%
  • Legs0%(0)div 22%
  • No strike data on record.

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

Wanderlei Silva
CloseSSTDKDCtrl

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

Tony Petarra

No UFC fights on record.

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