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UFC 20: Battle for the Gold
Marcelo Mello
Marcelo Mello
1-0 · BRA
VS
David Roberts
David Roberts
5-8 · USA
May 7, 1999 · Birmingham, Alabama, USA
Lightweight · 1 rounds
169.0lb
Weigh-in
169.0lb
Marcelo Mello def. David Roberts by KO/TKO (Elbows), R1 1:23
Performance
Round by round
SSTDKDCtrl
R1 · 1:23
Mello7/131/20
Roberts0/30/00
Total
Mello7/131/20
Roberts0/30/00

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
MelloWin probabilityRoberts
71.6%28.4%
KO / TKO
18%
Submission
20%
Decision
62%
Expected fight time: 11.3 min
What drives the pick

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

Predicted outcomes
Mello72%
Wins by
Model
Equity
Mkt
KO / TKO13%18%
Submission15%20%
Decision44%62%
Predicted output
Sig. strikes97 (55126)act 7
Takedowns0.4 (0.01.7)act 1
Roberts28%
Wins by
Model
Equity
Mkt
KO / TKO5%18%
Submission6%20%
Decision17%62%
Predicted output
Sig. strikes48 (2762)act 0
Takedowns3.3 (0.26.6)act 0
Combined totals~144 sig strikes~3.7 takedownsmkt —
How it ends
mkt —
R121%
R211%
R36%
Distance62%
Fighter props
Most sig. strikestie 0.6%
Mello
79.2%-392
Roberts
+39220.2%
Most takedownstie 14.3%
Mello
9.6%+793
Roberts
-79376.1%
Significant strikes — over/under
Mello
Expected: 96.6
96.5
Over 96.5
42.6%
+135
Under 96.5
57.4%
-135
0121242
Roberts
Expected: 47.7
47.5
Over 47.5
42.8%
+134
Under 47.5
57.2%
-134
060120
Takedowns — over/under
Mello
Expected: 0.4
0.5
Over 0.5
86.0%
-615
Under 0.5
14.0%
+615
035
Roberts
Expected: 3.3
3.5
Over 3.5
44.3%
+126
Under 3.5
55.7%
-126
0510

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 11.3 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.

Tale of the tape
Ratings (Elo)
1500
Pound-for-pound
1500
1500
Divisional
1500
1482
Striking offense
1500
1500
Striking defense
1500
1500
Grappling offense
1500
1500
Grappling defense
1500
Physical
Age
23 yrs
5'7"
Height
6'1"
Reach
Southpaw
Stance
Orthodox
Striking (UFC career)
Strikes landed / min
Strike accuracy
Strikes absorbed / min
Strike defense
Grappling (UFC career)
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Form & résumé
UFC win rate
Win/loss streak
Last-5 win rate
Finish rate
Recent opp. quality
Days since last fight
Recent form (last 5 UFC)
Marcelo Mello
No prior UFC fights.
David Roberts
No prior UFC fights.
Mello — win / loss by method
Record: 0-0-0

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
0 wins, 0 losses
W
L
Submission
0 wins, 0 losses
W
L
Decision
0 wins, 0 losses
W
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Roberts — win / loss by method
Record: 0-0-0

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
0 wins, 0 losses
W
L
Submission
0 wins, 0 losses
W
L
Decision
0 wins, 0 losses
W
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0

Profiles

Experience
Mello
Roberts
0
UFC fights
0
Octagon time
Career length
UFC schedule strength

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

Mello
Roberts
Overall
Wins
Losses
Distance striking
Mello
Roberts
Landed / min
Accuracy
Defense
Knockdowns / 15 min
Time at distance
Grappling & control
Mello
Roberts
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Control share
Strike target map
Mello
  • Head0%(0)div 55%
  • Body0%(0)div 27%
  • Legs0%(0)div 17%
  • No strike data on record.
Roberts
  • Head0%(0)div 55%
  • Body0%(0)div 27%
  • Legs0%(0)div 17%
  • No strike data on record.

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

Marcelo Mello

No UFC fights on record.

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

David Roberts

No UFC fights on record.

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