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UFC Fight Night: Whittaker vs. Gastelum
Tony Gravely
Tony Gravely
20-6 · USA
VS
Anthony Birchak
Anthony Birchak
16-7 · USA
April 17, 2021 · Las Vegas, Nevada, USA
Bantamweight · 3 rounds
Tony Gravely def. Anthony Birchak by KO/TKO (Punch), R2 1:31
Performance
Round by round
SSTDKDCtrl
R1
Gravely32/653/513:20
Birchak14/350/100:27
R2 · 1:31
Gravely7/101/111:14
Birchak4/100/000:00
Total
Gravely39/754/624:34
Birchak18/450/100:27

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
GravelyWin probabilityBirchak
62.0%38.0%
KO / TKO
35%
Submission
22%
Decision
43%
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 Gravely, blue toward Birchak. Tap a bar for why.

Predicted outcomes
Gravely62%
Wins by
Model
Equity
Mkt
KO / TKO22%36%31%
Submission10%16%16%
Decision30%48%23%
Predicted output
Sig. strikes37 (1550)act 39
Takedowns3.9 (0.48.5)act 4
Birchak38%
Wins by
Model
Equity
Mkt
KO / TKO13%34%10%
Submission12%31%8%
Decision13%35%13%
Predicted output
Sig. strikes29 (1239)act 18
Takedowns0.2 (0.00.8)act 0
Combined totals~66 sig strikes~4.0 takedownsmkt —
How it ends
mkt —
R134%
R218%
R35%
Distance43%
Fighter props
Most sig. strikestie 1.4%
Gravely
57.4%-139
Birchak
+13941.2%
Most takedownstie 5.8%
Gravely
91.6%-3483
Birchak
+34832.6%
Significant strikes — over/under
Gravely
Expected: 36.9
37
Over 37
39.0%
+153
Exactly 37
1.3%
push
Under 37
59.7%
-153
04793
Birchak
Expected: 28.6
28.5
Over 28.5
40.0%
+150
Under 28.5
60.0%
-150
03672
Takedowns — over/under
Gravely
Expected: 3.9
4
Over 4
38.2%
+131
Exactly 4
11.8%
push
Under 4
50.0%
-131
0612
Birchak
Expected: 0.2
0
Over 0
17.1%
Exactly 0
82.9%
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 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
Gravely62.0%74.9%−12.9-383
Birchak38.0%25.1%+12.9+276
By method
Gravely by KO/TKO21.6%31.1%−9.5+150
Gravely by submission13.5%15.6%−2.1+400
Gravely by decision26.9%22.9%+4.0+240
Birchak by KO/TKO13.3%9.7%+3.6+700
Birchak by submission8.3%7.8%+0.5+900
Birchak by decision16.5%13.0%+3.5+500
Total rounds (over)
Over 1.5 rds66.4%55.8%+10.6-150
Over 2.5 rds47.9%42.3%+5.6+120
Goes the distance
Fight goes to decision43.3%39.0%+4.3+140

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
54.0Striking66.7
Birchak +12.7
60.5Grappling31.0
Gravely +29.6
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
GravelyBirchak
Tale of the tape
Ratings (Elo)
1537
Pound-for-pound
1516
1536
Divisional
1518
1486
Striking offense
1509
1499
Striking defense
1500
1557
Grappling offense
1497
1536
Grappling defense
1482
Physical
29 yrs
Age
34 yrs
5'5"
Height
5'8"
69"
Reach
69"
Orthodox
Stance
Orthodox
Striking (UFC career)
2.69
Strikes landed / min
4.23
52%
Strike accuracy
36%
4.02
Strikes absorbed / min
3.06
36%
Strike defense
60%
Grappling (UFC career)
6.46
Takedowns / 15 min
0.60
50%
Takedown accuracy
17%
46%
Takedown defense
73%
0.0
Sub attempts / 15 min
0.0
Form & résumé
50%
UFC win rate
40%
+1
Win/loss streak
-1
50%
Last-5 win rate
40%
0%
Finish rate
50%
Recent opp. quality
154
Days since last fight
161
Recent form (last 5 UFC)
Tony Gravely
  • WGeraldo de FreitasS-DEC R3
    Close -1485mo before
  • LBrett JohnsSUB R3
    Close +1101y 3mo before
Anthony Birchak
  • LGustavo LopezSUB R1
    Close +1085mo before
  • WDileno LopesS-DEC R3
    Close -2504y 9mo before
  • LThomas AlmeidaKO/TKO R1
    Close +4155y 5mo before
  • WJoe SotoKO/TKO R1
    Close +1705y 10mo before
  • LIan EntwistleSUB R1
    Close -2706y 4mo before
Gravely — win / loss by method
Record: 20-6-0

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
8 wins, 0 losses
W
40% of wins
L
0% of losses
Submission
3 wins, 5 losses
W
15% of wins
L
83% of losses
Decision
9 wins, 1 loss
W
45% of wins
L
17% of losses
UFC
1win1loss0draw0NC
WinsLosses
0 (0%)KO/TKO(0%) 0
0 (0%)Submission(100%) 1
1 (100%)Decision(0%) 0
Non-UFC
19win5loss0draw0NC
WinsLosses
8 (42%)KO/TKO(0%) 0
3 (16%)Submission(80%) 4
8 (42%)Decision(20%) 1
Birchak — win / loss by method
Record: 16-7-0

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
5 wins, 1 loss
W
31% of wins
L
14% of losses
Submission
8 wins, 3 losses
W
50% of wins
L
43% of losses
Decision
3 wins, 3 losses
W
19% of wins
L
43% of losses
UFC
2win3loss0draw0NC
WinsLosses
1 (50%)KO/TKO(33%) 1
0 (0%)Submission(67%) 2
1 (50%)Decision(0%) 0
Non-UFC
14win4loss0draw0NC
WinsLosses
4 (29%)KO/TKO(0%) 0
8 (57%)Submission(25%) 1
2 (14%)Decision(75%) 3

Profiles

Experience
Gravely
Birchak
2
UFC fights
5
27.9 min · 13.9 avg
Octagon time
24.8 min · 5.0 avg
10y 10m
Career length
17y 1m
UFC schedule strength

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

Gravely
Birchak
27W–7L · 79.4%
Overall
72W–12L · 85.7%
12W–5L · 70.6%
Wins
33W–5L · 86.8%
15W–2L · 88.2%
Losses
39W–7L · 84.8%
Non-UFC schedule strength
Gravely
Birchak
135W–49L · 73.4%
Overall
153W–67L · 69.5%
109W–45L · 70.8%
Wins
71W–31L · 69.6%
26W–4L · 86.7%
Losses
82W–36L · 69.5%
Distance striking
Gravely
Birchak
5.90
Landed / min
5.52
35.6%
Accuracy
31.6%
43.8%
Defense
66.5%
0.00
Knockdowns / 15 min
1.21
19.5%
Time at distance
51.8%
Grappling & control
Gravely
Birchak
6.46
Takedowns / 15 min
0.60
50.0%
Takedown accuracy
16.7%
46.2%
Takedown defense
73.3%
0.00
Sub attempts / 15 min
0.00
65.8%
Control share
33.7%
Strike target map
Gravely
  • Head61%(46)div 62%
  • Body13%(10)div 21%
  • Legs25%(19)div 17%
Birchak
  • Head52%(55)div 62%
  • Body27%(28)div 21%
  • Legs21%(22)div 17%

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

Tony Gravely
CloseSSTDKDCtrl

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

Anthony Birchak
CloseSSTDKDCtrl

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