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UFC 221: Romero vs. Rockhold
Tai Tuivasa
Tai Tuivasa
8-1 · AUS
VS
Cyril Asker
Cyril Asker
9-3 · FRA
February 10, 2018 · Perth, Western Australia, Australia
Heavyweight · 3 rounds
Tai Tuivasa def. Cyril Asker by KO/TKO (Elbow), R1 2:18
Performance
Round by round
SSTDKDCtrl
R1 · 2:18
Tuivasa38/510/000:24
Asker3/110/000:00
Total
Tuivasa38/510/000:24
Asker3/110/000:00

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
TuivasaWin probabilityAsker
75.9%24.1%
KO / TKO
49%
Submission
23%
Decision
28%
Expected fight time: 8.0 min
What drives the pick

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

Predicted outcomes
Tuivasa76%
Wins by
Model
Equity
Mkt
KO / TKO41%54%
Submission15%19%
Decision20%27%
Predicted output
Sig. strikes37 (2148)act 38
Takedowns0.1 (0.00.2)act 0
Asker24%
Wins by
Model
Equity
Mkt
KO / TKO8%34%
Submission8%34%
Decision8%32%
Predicted output
Sig. strikes28 (1536)act 3
Takedowns0.8 (0.02.8)act 0
Combined totals~65 sig strikes~0.9 takedownsmkt —
How it ends
mkt —
R147%
R211%
R314%
Distance28%
Fighter props
Most sig. strikestie 1.6%
Tuivasa
62.1%-171
Asker
+17136.3%
Most takedownstie 48.5%
Tuivasa
7.1%+630
Asker
-63044.5%
Significant strikes — over/under
Tuivasa
Expected: 37.2
37
Over 37
42.0%
+134
Exactly 37
1.8%
push
Under 37
56.2%
-134
04794
Asker
Expected: 27.9
28
Over 28
41.2%
+137
Exactly 28
2.3%
push
Under 28
56.5%
-137
03570
Takedowns — over/under
Tuivasa
Expected: 0.1
0
Over 0
11.1%
Exactly 0
88.9%
push
Under 0
0.0%
035
Asker
Expected: 0.8
1
Over 1
29.6%
+178
Exactly 1
17.6%
push
Under 1
52.7%
-178
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 8.0 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
Tuivasa75.9%71.1%+4.8-275
Asker24.1%28.9%−4.8+235

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
77.6Striking54.2
Tuivasa +23.4
25.0Grappling87.8
Asker +62.8
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
TuivasaAsker
Tale of the tape
Ratings (Elo)
1532
Pound-for-pound
1519
1532
Divisional
1519
1507
Striking offense
1501
1507
Striking defense
1486
1501
Grappling offense
1497
1500
Grappling defense
1510
Physical
24 yrs
Age
32 yrs
6'2"
Height
6'0"
75"
Reach
74"
Southpaw
Stance
Orthodox
Striking (UFC career)
4.80
Strikes landed / min
3.67
61%
Strike accuracy
40%
2.18
Strikes absorbed / min
4.15
47%
Strike defense
41%
Grappling (UFC career)
0.00
Takedowns / 15 min
5.10
0%
Takedown accuracy
63%
100%
Takedown defense
100%
0.0
Sub attempts / 15 min
1.0
Form & résumé
100%
UFC win rate
50%
+1
Win/loss streak
+1
100%
Last-5 win rate
50%
100%
Finish rate
100%
Recent opp. quality
84
Days since last fight
77
Recent form (last 5 UFC)
Tai Tuivasa
  • WRashad CoulterKO/TKO R1
    Close -1753mo before
Cyril Asker
  • WHu YaozongSUB R2
    Close -2503mo before
  • LWalt HarrisKO/TKO R1
    Close +3008mo before
  • WDmitrii SmoliakovKO/TKO R1
    Close -1201y 1mo before
  • LJared CannonierKO/TKO R1
    Close +1151y 10mo before
Tuivasa — win / loss by method
Record: 8-1-0

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, 1 loss
W
100% of wins
L
100% of losses
Submission
0 wins, 0 losses
W
0% of wins
L
0% of losses
Decision
0 wins, 0 losses
W
0% of wins
L
0% of losses
UFC
1win0loss0draw0NC
WinsLosses
1 (100%)KO/TKO() 0
0 (0%)Submission() 0
0 (0%)Decision() 0
Non-UFC
7win1loss0draw0NC
WinsLosses
7 (100%)KO/TKO(100%) 1
0 (0%)Submission(0%) 0
0 (0%)Decision(0%) 0
Asker — 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
4 wins, 2 losses
W
44% of wins
L
67% of losses
Submission
3 wins, 1 loss
W
33% of wins
L
33% of losses
Decision
2 wins, 0 losses
W
22% of wins
L
0% of losses
UFC
2win2loss0draw0NC
WinsLosses
1 (50%)KO/TKO(100%) 2
1 (50%)Submission(0%) 0
0 (0%)Decision(0%) 0
Non-UFC
7win1loss0draw0NC
WinsLosses
3 (43%)KO/TKO(0%) 0
2 (29%)Submission(100%) 1
2 (29%)Decision(0%) 0

Profiles

Experience
Tuivasa
Asker
1
UFC fights
4
4.6 min · 4.6 avg
Octagon time
14.7 min · 3.7 avg
14y 1m
Career length
14y 4m
UFC schedule strength

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

Tuivasa
Asker
8W–2L · 80.0%
Overall
27W–7L · 79.4%
8W–2L · 80.0%
Wins
11W–1L · 91.7%
0W–0L
Losses
16W–6L · 72.7%
Non-UFC schedule strength
Tuivasa
Asker
32W–23L · 58.2%
Overall
37W–13L · 74.0%
25W–18L · 58.1%
Wins
35W–13L · 72.9%
7W–5L · 58.3%
Losses
2W–0L · 100.0%
Distance striking
Tuivasa
Asker
7.56
Landed / min
3.44
56.0%
Accuracy
24.4%
70.0%
Defense
50.0%
3.27
Knockdowns / 15 min
0.00
40.4%
Time at distance
37.6%
Grappling & control
Tuivasa
Asker
0.00
Takedowns / 15 min
5.10
0.0%
Takedown accuracy
62.5%
100.0%
Takedown defense
100.0%
0.00
Sub attempts / 15 min
1.02
66.4%
Control share
91.8%
Strike target map
Tuivasa
  • Head73%(16)div 66%
  • Body14%(3)div 19%
  • Legs14%(3)div 15%
Asker
  • Head91%(49)div 66%
  • Body9%(5)div 19%
  • Legs0%(0)div 15%

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

Tai Tuivasa
CloseSSTDKDCtrl

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

Cyril Asker
CloseSSTDKDCtrl

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