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UFC Fight Night: Song vs. Simon
Rodolfo Vieira
Rodolfo Vieira
8-2 · BRA
VS
Cody Brundage
Cody Brundage
8-3 · USA
April 29, 2023 · Las Vegas, Nevada, USA
Middleweight · 3 rounds
186.0lb
Weigh-in
185.5lb
Rodolfo Vieira def. Cody Brundage by SUB (Arm Triangle), R2 1:28
Performance
Round by round
SSTDKDCtrl
R1
Vieira9/141/603:04
Brundage20/280/011:04
R2 · 1:28
Vieira1/10/101:15
Brundage0/10/000:00
Total
Vieira10/151/704:19
Brundage20/290/011:04

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
VieiraWin probabilityBrundage
51.0%49.0%
KO / TKO
30%
Submission
26%
Decision
44%
Expected fight time: 9.6 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 Vieira, blue toward Brundage. Tap a bar for why.

Predicted outcomes
Vieira51%
Wins by
Model
Equity
Mkt
KO / TKO12%23%10%
Submission17%34%43%
Decision22%43%14%
Predicted output
Sig. strikes28 (1137)act 10
Takedowns1.3 (0.04.1)act 1
Brundage49%
Wins by
Model
Equity
Mkt
KO / TKO18%37%17%
Submission9%18%5%
Decision22%45%11%
Predicted output
Sig. strikes34 (1446)act 20
Takedowns1.2 (0.03.9)act 0
Combined totals~61 sig strikes~2.6 takedownsmkt —
How it ends
mkt —
R131%
R217%
R38%
Distance44%
Fighter props
Most sig. strikestie 1.5%
Vieira
42.8%+130
Brundage
-13055.7%
Most takedownstie 22.7%
Vieira
40.6%-111
Brundage
+11136.7%
Significant strikes — over/under
Vieira
Expected: 27.6
27.5
Over 27.5
40.0%
+150
Under 27.5
60.0%
-150
03570
Brundage
Expected: 33.6
33.5
Over 33.5
39.9%
+151
Under 33.5
60.1%
-151
04284
Takedowns — over/under
Vieira
Expected: 1.3
1.5
Over 1.5
43.2%
+132
Under 1.5
56.8%
-132
035
Brundage
Expected: 1.2
1
Over 1
40.4%
-100
Exactly 1
19.4%
push
Under 1
40.2%
+100
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 9.6 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
Vieira51.0%67.5%−16.5-242
Brundage49.0%32.5%+16.5+194
By method
Vieira by KO/TKO15.2%9.7%+5.5+757
Vieira by submission13.5%43.2%−29.7-108
Vieira by decision22.3%13.8%+8.5+502
Brundage by KO/TKO14.6%17.2%−2.6+385
Brundage by submission13.0%5.1%+7.9+1543
Brundage by decision21.5%11.0%+10.5+658
Total rounds (over)
Over 1.5 rds68.7%48.7%+20.0-108
Over 2.5 rds52.0%30.9%+21.1+203
Goes the distance
Fight goes to decision43.8%26.4%+17.4+254

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
59.5Striking62.1
Brundage +2.6
69.4Grappling70.9
Brundage +1.6
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
VieiraBrundage
Tale of the tape
Ratings (Elo)
1534
Pound-for-pound
1517
1534
Divisional
1517
1482
Striking offense
1496
1490
Striking defense
1504
1531
Grappling offense
1540
1518
Grappling defense
1515
Physical
33 yrs
Age
28 yrs
6'0"
Height
6'0"
73"
Reach
72"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.62
Strikes landed / min
1.82
54%
Strike accuracy
46%
5.09
Strikes absorbed / min
2.56
50%
Strike defense
56%
Grappling (UFC career)
3.90
Takedowns / 15 min
2.91
28%
Takedown accuracy
50%
100%
Takedown defense
69%
1.0
Sub attempts / 15 min
1.2
Form & résumé
60%
UFC win rate
50%
-1
Win/loss streak
-1
60%
Last-5 win rate
50%
100%
Finish rate
100%
Recent opp. quality
308
Days since last fight
133
Recent form (last 5 UFC)
Rodolfo Vieira
  • LChris CurtisU-DEC R3
    Close +10110mo before
  • WDustin StoltzfusSUB R3
    Close -2281y 9mo before
  • LAnthony HernandezSUB R2
    Close -5162y 2mo before
  • WSaparbeg SafarovSUB R1
    Close -5703y 2mo before
  • WOskar PiechotaSUB R2
    Close -2253y 9mo before
Cody Brundage
  • LMichal OleksiejczukKO/TKO R1
    Close +2164mo before
  • WTresean GoreKO/TKO R1
    Close +13110mo before
  • WDalcha LungiambulaSUB R1
    Close +1171y 2mo before
  • LNick MaximovU-DEC R3
    Close +1151y 7mo before
Vieira — win / loss by method
Record: 8-2-0

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
1 win, 0 losses
W
13% of wins
L
0% of losses
Submission
7 wins, 1 loss
W
88% of wins
L
50% of losses
Decision
0 wins, 1 loss
W
0% of wins
L
50% of losses
UFC
3win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
3 (100%)Submission(50%) 1
0 (0%)Decision(50%) 1
Non-UFC
5win0loss0draw0NC
WinsLosses
1 (20%)KO/TKO() 0
4 (80%)Submission() 0
0 (0%)Decision() 0
Brundage — win / loss by method
Record: 8-3-0

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
4 wins, 2 losses
W
50% of wins
L
67% of losses
Submission
3 wins, 0 losses
W
38% of wins
L
0% of losses
Decision
1 win, 1 loss
W
13% of wins
L
33% of losses
UFC
2win2loss0draw0NC
WinsLosses
1 (50%)KO/TKO(50%) 1
1 (50%)Submission(0%) 0
0 (0%)Decision(50%) 1
Non-UFC
6win1loss0draw0NC
WinsLosses
3 (50%)KO/TKO(100%) 1
2 (33%)Submission(0%) 0
1 (17%)Decision(0%) 0

Profiles

Experience
Vieira
Brundage
5
UFC fights
4
46.2 min · 9.2 avg
Octagon time
25.8 min · 6.4 avg
9y 6m
Career length
7y 3m
UFC schedule strength

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

Vieira
Brundage
68W–15L · 81.9%
Overall
37W–9L · 80.4%
33W–5L · 86.8%
Wins
14W–4L · 77.8%
35W–10L · 77.8%
Losses
23W–5L · 82.1%
Non-UFC schedule strength
Vieira
Brundage
19W–7L · 73.1%
Overall
40W–35L · 53.3%
19W–7L · 73.1%
Wins
33W–34L · 49.3%
0W–0L
Losses
7W–1L · 87.5%
Distance striking
Vieira
Brundage
5.41
Landed / min
4.33
53.7%
Accuracy
35.4%
52.2%
Defense
67.6%
0.00
Knockdowns / 15 min
0.58
57.7%
Time at distance
25.1%
Grappling & control
Vieira
Brundage
3.90
Takedowns / 15 min
2.91
27.9%
Takedown accuracy
50.0%
100.0%
Takedown defense
68.8%
0.97
Sub attempts / 15 min
1.16
87.9%
Control share
31.4%
Strike target map
Vieira
  • Head81%(136)div 63%
  • Body5%(9)div 20%
  • Legs13%(22)div 17%
Brundage
  • Head72%(34)div 63%
  • Body19%(9)div 20%
  • Legs9%(4)div 17%

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

Rodolfo Vieira
CloseSSTDKDCtrl

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

Cody Brundage
CloseSSTDKDCtrl

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