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UFC Fight Night: Iaquinta vs. Cowboy
Walt Harris
Walt Harris
11-7 · USA
VS
Serghei Spivac
Serghei Spivac
9-0 · MDA
May 4, 2019 · Ottawa, Ontario, Canada
Heavyweight · 3 rounds
Walt Harris def. Serghei Spivac by KO/TKO (Knees), R1 0:50
Performance
Round by round
SSTDKDCtrl
R1 · 0:50
Harris17/280/010:05
Spivac1/30/000:00
Total
Harris17/280/010:05
Spivac1/30/000:00

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
HarrisWin probabilitySpivac
22.5%77.5%
KO / TKO
61%
Submission
4%
Decision
35%
Expected fight time: 9.0 min
What drives the pick

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

Predicted outcomes
Harris23%
Wins by
Model
Equity
Mkt
KO / TKO17%73%
Submission0%0%
Decision6%27%
Predicted output
Sig. strikes33 (1843)act 17
Takedowns0.1 (0.00.0)act 0
Spivac77%
Wins by
Model
Equity
Mkt
KO / TKO44%57%
Submission4%5%
Decision29%38%
Predicted output
Sig. strikes41 (2353)act 1
Takedowns1.7 (0.04.5)act 0
Combined totals~74 sig strikes~1.7 takedownsmkt —
How it ends
mkt —
R129%
R229%
R37%
Distance35%
Fighter props
Most sig. strikestie 1.5%
Harris
40.0%+146
Spivac
-14658.5%
Most takedownstie 36.7%
Harris
3.4%+1768
Spivac
-176859.9%
Significant strikes — over/under
Harris
Expected: 33.2
33
Over 33
41.9%
+134
Exactly 33
2.0%
push
Under 33
56.1%
-134
04283
Spivac
Expected: 40.6
40.5
Over 40.5
42.7%
+134
Under 40.5
57.3%
-134
051102
Takedowns — over/under
Harris
Expected: 0.1
0
Over 0
7.2%
Exactly 0
92.8%
push
Under 0
0.0%
035
Spivac
Expected: 1.7
1.5
Over 1.5
47.3%
+112
Under 1.5
52.7%
-112
036

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 9.0 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
Harris22.5%60.4%−37.9-165
Spivac77.5%39.6%+37.9+145

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
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
HarrisSpivac
Tale of the tape
Ratings (Elo)
1501
Pound-for-pound
1530
1501
Divisional
1530
1513
Striking offense
1500
1517
Striking defense
1500
Grappling offense
Grappling defense
Physical
35 yrs
Age
24 yrs
6'5"
Height
6'3"
77"
Reach
78"
Southpaw
Stance
Orthodox
Striking (UFC career)
2.75
Strikes landed / min
37%
Strike accuracy
2.69
Strikes absorbed / min
62%
Strike defense
Grappling (UFC career)
0.36
Takedowns / 15 min
33%
Takedown accuracy
76%
Takedown defense
0.2
Sub attempts / 15 min
Form & résumé
36%
UFC win rate
-1
Win/loss streak
40%
Last-5 win rate
100%
Finish rate
Recent opp. quality
126
Days since last fight
Recent form (last 5 UFC)
Walt Harris
  • WDaniel SpitzKO/TKO R2
    Close -22011mo before
  • LMark GodbeerDQ R1
    Close -3701y 6mo before
  • LFabricio WerdumSUB R1
    Close +1751y 7mo before
  • WCyril AskerKO/TKO R1
    Close -3601y 11mo before
  • WChase ShermanKO/TKO R2
    Close -1552y 4mo before
Serghei Spivac
No prior UFC fights.
Harris — win / loss by method
Record: 11-7-0, 1 NC

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
11 wins, 2 losses
W
100% of wins
L
29% of losses
Submission
0 wins, 1 loss
W
0% of wins
L
14% of losses
Decision
0 wins, 3 losses
W
0% of wins
L
43% of losses
DQ / other
0 wins, 1 loss
W
0% of wins
L
14% of losses
UFC
4win6loss0draw1NC
WinsLosses
4 (100%)KO/TKO(33%) 2
0 (0%)Submission(17%) 1
0 (0%)Decision(33%) 2
0 (0%)DQ / other(17%) 1
Non-UFC
7win1loss0draw0NC
WinsLosses
7 (100%)KO/TKO(0%) 0
0 (0%)Submission(0%) 0
0 (0%)Decision(100%) 1
Spivac — win / loss by method
Record: 9-0-0

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
4 wins, 0 losses
W
44% of wins
L
Submission
5 wins, 0 losses
W
56% of wins
L
Decision
0 wins, 0 losses
W
0% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
9win0loss0draw0NC
WinsLosses
4 (44%)KO/TKO() 0
5 (56%)Submission() 0
0 (0%)Decision() 0

Profiles

Experience
Harris
Spivac
11
UFC fights
0
84.5 min · 7.7 avg
Octagon time
15y 4m
Career length
UFC schedule strength

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

Harris
Spivac
128W–26L · 83.1%
Overall
35W–6L · 85.4%
Wins
93W–20L · 82.3%
Losses
Non-UFC schedule strength
Harris
Spivac
44W–29L · 60.3%
Overall
353W–123L · 74.2%
38W–28L · 57.6%
Wins
353W–123L · 74.2%
6W–1L · 85.7%
Losses
0W–0L
Distance striking
Harris
Spivac
2.31
Landed / min
30.5%
Accuracy
62.6%
Defense
1.07
Knockdowns / 15 min
80.5%
Time at distance
Grappling & control
Harris
Spivac
0.36
Takedowns / 15 min
33.3%
Takedown accuracy
76.5%
Takedown defense
0.18
Sub attempts / 15 min
39.8%
Control share
Strike target map
Harris
  • Head66%(153)div 66%
  • Body25%(59)div 19%
  • Legs9%(20)div 15%
Spivac
  • Head0%(0)div 66%
  • Body0%(0)div 19%
  • Legs0%(0)div 15%
  • No strike data on record.

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

Walt Harris
CloseSSTDKDCtrl

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

Serghei Spivac

No UFC fights on record.

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