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UFC 258: Usman vs. Burns
Polyana Viana
Polyana Viana
11-4 · BRA
VS
Mallory Martin
Mallory Martin
7-3 · USA
February 13, 2021 · Las Vegas, Nevada, USA
Strawweight · 3 rounds
116.0lb
Weigh-in
115.5lb
Polyana Viana def. Mallory Martin by SUB (Armbar), R1 3:18
Performance
Round by round
SSTDKDCtrl
R1 · 3:18
Viana4/160/000:18
Martin5/71/102:25
Total
Viana4/160/000:18
Martin5/71/102:25

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
VianaWin probabilityMartin
67.7%32.3%
KO / TKO
27%
Submission
33%
Decision
40%
Expected fight time: 9.3 min
Retrospective pick: the walk-forward model's call at the time of the fight — persisted out-of-sample, with no hindsight about the result.
What drives the pick

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

Predicted outcomes
Viana68%
Wins by
Model
Equity
Mkt
KO / TKO20%29%7%
Submission25%38%16%
Decision23%33%20%
Predicted output
Sig. strikes35 (1448)act 4
Takedowns0.8 (0.02.9)act 0
Martin32%
Wins by
Model
Equity
Mkt
KO / TKO8%24%7%
Submission7%23%12%
Decision17%53%37%
Predicted output
Sig. strikes33 (1344)act 5
Takedowns0.8 (0.02.9)act 1
Combined totals~68 sig strikes~1.7 takedownsmkt —
How it ends
mkt —
R133%
R218%
R39%
Distance40%
Fighter props
Most sig. strikestie 1.4%
Viana
51.5%-109
Martin
+10947.1%
Most takedownstie 29.9%
Viana
35.8%-104
Martin
+10434.3%
Significant strikes — over/under
Viana
Expected: 35.1
35
Over 35
39.2%
+151
Exactly 35
1.4%
push
Under 35
59.4%
-151
04488
Martin
Expected: 32.7
32.5
Over 32.5
40.0%
+150
Under 32.5
60.0%
-150
04182
Takedowns — over/under
Viana
Expected: 0.8
1
Over 1
31.6%
+147
Exactly 1
21.8%
push
Under 1
46.6%
-147
035
Martin
Expected: 0.8
1
Over 1
31.2%
+156
Exactly 1
20.2%
push
Under 1
48.7%
-156
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 9.3 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
Final
ModelMarketGapLine
To win
Viana67.7%48.4%+19.3-105
Martin32.3%51.6%−19.3-120
By method
Viana by KO/TKO18.6%7.4%+11.2+1000
Viana by submission22.4%16.3%+6.1+400
Viana by decision26.8%20.3%+6.5+300
Martin by KO/TKO8.8%7.4%+1.4+1000
Martin by submission10.6%11.6%−1.0+600
Martin by decision12.8%37.0%−24.2+120
Total rounds (over)
Over 1.5 rds67.1%75.0%−7.9-400
Over 2.5 rds48.7%66.3%−17.6-250
Goes the distance
Fight goes to decision39.6%64.6%−25.0-225

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
66.2Striking55.6
Viana +10.6
60.1Grappling50.2
Viana +10.0
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
VianaMartin
Tale of the tape
Ratings (Elo)
1506
Pound-for-pound
1517
1523
Divisional
1517
1500
Striking offense
1496
1504
Striking defense
1501
1520
Grappling offense
1501
1504
Grappling defense
1494
Physical
28 yrs
Age
27 yrs
5'5"
Height
5'4"
67"
Reach
63"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.93
Strikes landed / min
2.42
43%
Strike accuracy
46%
3.15
Strikes absorbed / min
4.37
56%
Strike defense
53%
Grappling (UFC career)
1.22
Takedowns / 15 min
1.17
33%
Takedown accuracy
50%
67%
Takedown defense
25%
1.6
Sub attempts / 15 min
1.2
Form & résumé
40%
UFC win rate
50%
+1
Win/loss streak
+1
40%
Last-5 win rate
50%
100%
Finish rate
100%
Recent opp. quality
168
Days since last fight
168
Recent form (last 5 UFC)
Polyana Viana
  • WEmily WhitmireSUB R1
    Close +1106mo before
  • LVeronica HardySUB R1
    Close +1101y 6mo before
  • LHannah CifersS-DEC R3
    Close -2801y 11mo before
  • LJJ AldrichU-DEC R3
    Close -1552y 6mo before
  • WMaia StevensonSUB R1
    Close -4403y before
Mallory Martin
  • WHannah CifersSUB R2
    Close -3156mo before
  • LVirna JandirobaSUB R2
    Close +2151y 2mo before
Viana — win / loss by method
Record: 11-4-0

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
4 wins, 0 losses
W
36% of wins
L
0% of losses
Submission
7 wins, 1 loss
W
64% of wins
L
25% of losses
Decision
0 wins, 3 losses
W
0% of wins
L
75% of losses
UFC
2win3loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
2 (100%)Submission(33%) 1
0 (0%)Decision(67%) 2
Non-UFC
9win1loss0draw0NC
WinsLosses
4 (44%)KO/TKO(0%) 0
5 (56%)Submission(0%) 0
0 (0%)Decision(100%) 1
Martin — win / loss by method
Record: 7-3-0

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
2 wins, 0 losses
W
29% of wins
L
0% of losses
Submission
2 wins, 1 loss
W
29% of wins
L
33% of losses
Decision
3 wins, 2 losses
W
43% of wins
L
67% of losses
UFC
1win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
1 (100%)Submission(100%) 1
0 (0%)Decision(0%) 0
Non-UFC
6win2loss0draw0NC
WinsLosses
2 (33%)KO/TKO(0%) 0
1 (17%)Submission(0%) 0
3 (50%)Decision(100%) 2

Profiles

Experience
Viana
Martin
5
UFC fights
2
36.9 min · 7.4 avg
Octagon time
12.8 min · 6.4 avg
12y 7m
Career length
9y 7m
UFC schedule strength

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

Viana
Martin
29W–15L · 65.9%
Overall
24W–7L · 77.4%
10W–7L · 58.8%
Wins
10W–6L · 62.5%
19W–8L · 70.4%
Losses
14W–1L · 93.3%
Non-UFC schedule strength
Viana
Martin
20W–11L · 64.5%
Overall
24W–9L · 72.7%
13W–5L · 72.2%
Wins
22W–9L · 71.0%
7W–6L · 53.8%
Losses
2W–0L · 100.0%
Distance striking
Viana
Martin
5.95
Landed / min
4.76
37.5%
Accuracy
40.7%
60.3%
Defense
61.1%
0.00
Knockdowns / 15 min
0.00
51.5%
Time at distance
39.3%
Grappling & control
Viana
Martin
1.22
Takedowns / 15 min
1.17
33.3%
Takedown accuracy
50.0%
66.7%
Takedown defense
25.0%
1.63
Sub attempts / 15 min
1.17
21.1%
Control share
25.3%
Strike target map
Viana
  • Head48%(70)div 61%
  • Body31%(45)div 22%
  • Legs21%(30)div 16%
Martin
  • Head87%(27)div 61%
  • Body13%(4)div 22%
  • Legs0%(0)div 16%

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

Polyana Viana
CloseSSTDKDCtrl

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

Mallory Martin
CloseSSTDKDCtrl

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