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UFC Fight Night: Santos vs. Walker
Casey O'Neill
Casey O'Neill
7-0 · GBR
VS
October 2, 2021 · Las Vegas, Nevada, USA
Flyweight · 3 rounds
125.0lb
Weigh-in
125.5lb
Casey O'Neill def. Antonina Shevchenko by KO/TKO (Punches), R2 4:47
Performance
Round by round
SSTDKDCtrl
R1
O'Neill9/332/502:19
Shevchenko29/410/100:49
R2 · 4:47
O'Neill43/771/303:20
Shevchenko11/220/000:23
Total
O'Neill52/1103/805:39
Shevchenko40/630/101:12

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
O'NeillWin probabilityShevchenko
70.6%29.4%
KO / TKO
37%
Submission
20%
Decision
43%
Expected fight time: 9.4 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 O'Neill, blue toward Shevchenko. Tap a bar for why.

Predicted outcomes
O'Neill71%
Wins by
Model
Equity
Mkt
KO / TKO26%37%21%
Submission16%22%19%
Decision29%41%26%
Predicted output
Sig. strikes35 (1448)act 52
Takedowns1.7 (0.04.8)act 3
Shevchenko29%
Wins by
Model
Equity
Mkt
KO / TKO10%37%9%
Submission5%16%6%
Decision14%47%20%
Predicted output
Sig. strikes25 (1034)act 40
Takedowns0.5 (0.02.0)act 0
Combined totals~61 sig strikes~2.2 takedownsmkt —
How it ends
mkt —
R132%
R218%
R37%
Distance43%
Fighter props
Most sig. strikestie 1.5%
O'Neill
59.7%-154
Shevchenko
+15438.7%
Most takedownstie 22.9%
O'Neill
61.0%-378
Shevchenko
+37816.1%
Significant strikes — over/under
O'Neill
Expected: 35.3
35.5
Over 35.5
39.5%
+153
Under 35.5
60.5%
-153
04589
Shevchenko
Expected: 25.4
25.5
Over 25.5
39.7%
+152
Under 25.5
60.3%
-152
03264
Takedowns — over/under
O'Neill
Expected: 1.7
1.5
Over 1.5
52.4%
-110
Under 1.5
47.6%
+110
036
Shevchenko
Expected: 0.5
0.5
Over 0.5
35.4%
+182
Under 0.5
64.6%
-182
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 9.4 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
O'Neill70.6%67.5%+3.1-241
Shevchenko29.4%32.5%−3.1+194
By method
O'Neill by KO/TKO26.1%20.8%+5.3+296
O'Neill by submission14.2%18.6%−4.4+341
O'Neill by decision30.3%25.6%+4.7+221
Shevchenko by KO/TKO10.9%9.2%+1.7+797
Shevchenko by submission5.9%5.5%+0.4+1394
Shevchenko by decision12.6%20.3%−7.7+306
Total rounds (over)
Over 1.5 rds67.9%64.5%+3.4-225
Over 2.5 rds49.6%48.4%+1.2-136
Goes the distance
Fight goes to decision42.9%49.0%−6.1-110

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
75.3Striking67.6
O'Neill +7.7
84.0Grappling47.2
O'Neill +36.8
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
O'NeillShevchenko
Tale of the tape
Ratings (Elo)
1547
Pound-for-pound
1518
1548
Divisional
1519
1510
Striking offense
1498
1496
Striking defense
1514
1514
Grappling offense
1495
1502
Grappling defense
1491
Physical
23 yrs
Age
36 yrs
5'6"
Height
5'8"
69"
Reach
67"
Orthodox
Stance
Southpaw
Striking (UFC career)
5.56
Strikes landed / min
3.29
61%
Strike accuracy
54%
2.64
Strikes absorbed / min
2.90
39%
Strike defense
51%
Grappling (UFC career)
3.47
Takedowns / 15 min
0.64
63%
Takedown accuracy
60%
60%
Takedown defense
40%
2.1
Sub attempts / 15 min
0.6
Form & résumé
100%
UFC win rate
50%
+2
Win/loss streak
-1
100%
Last-5 win rate
40%
100%
Finish rate
67%
Recent opp. quality
105
Days since last fight
140
Recent form (last 5 UFC)
Casey O'Neill
  • WLara ProcopioSUB R3
    Close +1403mo before
  • WShana DobsonKO/TKO R2
    Close -1617mo before
Antonina Shevchenko
  • LAndrea LeeSUB R2
    Close -1225mo before
  • WAriane da SilvaKO/TKO R2
    Close -13510mo before
  • LKatlyn CerminaraU-DEC R3
    Close -1551y 4mo before
  • WLucie PudilovaSUB R2
    Close -1602y 2mo before
  • LRoxanne ModafferiS-DEC R3
    Close -3302y 5mo before
O'Neill — win / loss by method
Record: 7-0-0

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
2 wins, 0 losses
W
29% of wins
L
Submission
2 wins, 0 losses
W
29% of wins
L
Decision
3 wins, 0 losses
W
43% of wins
L
UFC
2win0loss0draw0NC
WinsLosses
1 (50%)KO/TKO() 0
1 (50%)Submission() 0
0 (0%)Decision() 0
Non-UFC
5win0loss0draw0NC
WinsLosses
1 (20%)KO/TKO() 0
1 (20%)Submission() 0
3 (60%)Decision() 0
Shevchenko — win / loss by method
Record: 9-3-0

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
3 wins, 0 losses
W
33% of wins
L
0% of losses
Submission
1 win, 1 loss
W
11% of wins
L
33% of losses
Decision
5 wins, 2 losses
W
56% of wins
L
67% of losses
UFC
3win3loss0draw0NC
WinsLosses
1 (33%)KO/TKO(0%) 0
1 (33%)Submission(33%) 1
1 (33%)Decision(67%) 2
Non-UFC
6win0loss0draw0NC
WinsLosses
2 (33%)KO/TKO() 0
0 (0%)Submission() 0
4 (67%)Decision() 0

Profiles

Experience
O'Neill
Shevchenko
2
UFC fights
6
21.6 min · 10.8 avg
Octagon time
70.8 min · 11.8 avg
7y 4m
Career length
24y 3m
UFC schedule strength

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

O'Neill
Shevchenko
11W–5L · 68.8%
Overall
75W–33L · 69.4%
11W–5L · 68.8%
Wins
29W–10L · 74.4%
0W–0L
Losses
46W–23L · 66.7%
Non-UFC schedule strength
O'Neill
Shevchenko
14W–6L · 70.0%
Overall
11W–9L · 55.0%
14W–6L · 70.0%
Wins
11W–9L · 55.0%
0W–0L
Losses
0W–0L
Distance striking
O'Neill
Shevchenko
12.94
Landed / min
6.60
50.8%
Accuracy
45.2%
46.4%
Defense
66.4%
0.00
Knockdowns / 15 min
0.00
21.5%
Time at distance
30.0%
Grappling & control
O'Neill
Shevchenko
3.47
Takedowns / 15 min
0.64
62.5%
Takedown accuracy
60.0%
60.0%
Takedown defense
40.0%
2.08
Sub attempts / 15 min
0.64
81.2%
Control share
42.4%
Strike target map
O'Neill
  • Head71%(85)div 61%
  • Body22%(26)div 22%
  • Legs8%(9)div 17%
Shevchenko
  • Head66%(153)div 61%
  • Body24%(57)div 22%
  • Legs10%(23)div 17%

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

Casey O'Neill
CloseSSTDKDCtrl

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

Antonina Shevchenko
CloseSSTDKDCtrl

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