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UFC Fight Night: Blaydes vs. Lewis
Serghei Spivac
Serghei Spivac
11-2 · MDA
VS
Jared Vanderaa
Jared Vanderaa
11-4 · USA
February 20, 2021 · Las Vegas, Nevada, USA
Heavyweight · 3 rounds
245.0lb
Weigh-in
265.0lb
Serghei Spivac def. Jared Vanderaa by KO/TKO (Punches), R2 4:32
Performance
Round by round
SSTDKDCtrl
R1
Spivac15/202/204:26
Vanderaa10/150/000:00
R2 · 4:32
Spivac36/521/104:03
Vanderaa3/90/000:00
Total
Spivac51/723/308:29
Vanderaa13/240/000:00

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
SpivacWin probabilityVanderaa
60.8%39.2%
KO / TKO
42%
Submission
22%
Decision
36%
Expected fight time: 8.6 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 Spivac, blue toward Vanderaa. Tap a bar for why.

Predicted outcomes
Spivac61%
Wins by
Model
Equity
Mkt
KO / TKO23%37%
Submission16%26%
Decision22%37%
Predicted output
Sig. strikes25 (1034)act 51
Takedowns1.1 (0.03.8)act 3
Vanderaa39%
Wins by
Model
Equity
Mkt
KO / TKO19%49%
Submission7%17%
Decision13%34%
Predicted output
Sig. strikes25 (1034)act 13
Takedowns0.4 (0.01.9)act 0
Combined totals~51 sig strikes~1.6 takedownsmkt —
How it ends
mkt —
R140%
R216%
R38%
Distance36%
Fighter props
Most sig. strikestie 1.9%
Spivac
48.5%+102
Vanderaa
-10249.6%
Most takedownstie 38.3%
Spivac
42.4%-219
Vanderaa
+21919.4%
Significant strikes — over/under
Spivac
Expected: 25.1
25
Over 25
39.0%
+151
Exactly 25
1.9%
push
Under 25
59.0%
-151
03263
Vanderaa
Expected: 25.5
25.5
Over 25.5
39.7%
+152
Under 25.5
60.3%
-152
03264
Takedowns — over/under
Spivac
Expected: 1.1
1
Over 1
35.1%
+142
Exactly 1
15.2%
push
Under 1
49.8%
-142
035
Vanderaa
Expected: 0.4
0.5
Over 0.5
30.0%
+233
Under 0.5
70.0%
-233
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 8.6 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
Spivac60.8%67.8%−7.0-250
Vanderaa39.2%32.2%+7.0+195

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
SpivacVanderaa
Tale of the tape
Ratings (Elo)
1530
Pound-for-pound
1518
1530
Divisional
1518
1490
Striking offense
1500
1496
Striking defense
1500
1508
Grappling offense
1500
1507
Grappling defense
1500
Physical
26 yrs
Age
28 yrs
6'3"
Height
6'4"
78"
Reach
80"
Orthodox
Stance
Orthodox
Striking (UFC career)
3.15
Strikes landed / min
44%
Strike accuracy
3.20
Strikes absorbed / min
59%
Strike defense
Grappling (UFC career)
3.46
Takedowns / 15 min
56%
Takedown accuracy
75%
Takedown defense
0.4
Sub attempts / 15 min
Form & résumé
50%
UFC win rate
+1
Win/loss streak
50%
Last-5 win rate
50%
Finish rate
Recent opp. quality
217
Days since last fight
Recent form (last 5 UFC)
Serghei Spivac
  • WCarlos FelipeM-DEC R3
    Close -1777mo before
  • LMarcin TyburaU-DEC R3
    Close -1201y before
  • WTai TuivasaSUB R2
    Close +2701y 5mo before
  • LWalt HarrisKO/TKO R1
    Close +1451y 10mo before
Jared Vanderaa
No prior UFC fights.
Spivac — win / loss by method
Record: 11-2-0

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
4 wins, 1 loss
W
36% of wins
L
50% of losses
Submission
6 wins, 0 losses
W
55% of wins
L
0% of losses
Decision
1 win, 1 loss
W
9% of wins
L
50% of losses
UFC
2win2loss0draw0NC
WinsLosses
0 (0%)KO/TKO(50%) 1
1 (50%)Submission(0%) 0
1 (50%)Decision(50%) 1
Non-UFC
9win0loss0draw0NC
WinsLosses
4 (44%)KO/TKO() 0
5 (56%)Submission() 0
0 (0%)Decision() 0
Vanderaa — win / loss by method
Record: 11-4-0

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
7 wins, 0 losses
W
64% of wins
L
0% of losses
Submission
3 wins, 2 losses
W
27% of wins
L
50% of losses
Decision
1 win, 2 losses
W
9% of wins
L
50% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
11win4loss0draw0NC
WinsLosses
7 (64%)KO/TKO(0%) 0
3 (27%)Submission(50%) 2
1 (9%)Decision(50%) 2

Profiles

Experience
Spivac
Vanderaa
4
UFC fights
0
39.1 min · 9.8 avg
Octagon time
11y 10m
Career length
UFC schedule strength

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

Spivac
Vanderaa
46W–16L · 74.2%
Overall
18W–3L · 85.7%
Wins
28W–13L · 68.3%
Losses
Non-UFC schedule strength
Spivac
Vanderaa
353W–123L · 74.2%
Overall
152W–90L · 62.8%
353W–123L · 74.2%
Wins
116W–79L · 59.5%
0W–0L
Losses
36W–11L · 76.6%
Distance striking
Spivac
Vanderaa
3.84
Landed / min
33.8%
Accuracy
64.7%
Defense
0.00
Knockdowns / 15 min
50.7%
Time at distance
Grappling & control
Spivac
Vanderaa
3.46
Takedowns / 15 min
56.3%
Takedown accuracy
75.0%
Takedown defense
0.38
Sub attempts / 15 min
51.9%
Control share
Strike target map
Spivac
  • Head95%(117)div 65%
  • Body4%(5)div 19%
  • Legs1%(1)div 15%
Vanderaa
  • Head0%(0)div 65%
  • 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.

Serghei Spivac
CloseSSTDKDCtrl

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

Jared Vanderaa

No UFC fights on record.

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