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UFC Fight Night: Overeem vs. Volkov
Devonte Smith
Devonte Smith
10-2 · USA
VS
Justin Jaynes
Justin Jaynes
16-6 · USA
February 6, 2021 · Las Vegas, Nevada, USA
Catch Weight · 3 rounds
Devonte Smith def. Justin Jaynes by KO/TKO (Eye Injury), R2 3:38
Performance
Round by round
SSTDKDCtrl
R1
Smith25/510/000:02
Jaynes9/240/100:00
R2 · 3:38
Smith9/141/103:06
Jaynes2/30/100:12
Total
Smith34/651/103:08
Jaynes11/270/200:12

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
SmithWin probabilityJaynes
69.1%30.9%
KO / TKO
26%
Submission
20%
Decision
54%
Expected fight time: 10.5 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 Smith, blue toward Jaynes. Tap a bar for why.

Predicted outcomes
Smith69%
Wins by
Model
Equity
Mkt
KO / TKO20%29%52%
Submission12%17%5%
Decision37%54%15%
Predicted output
Sig. strikes58 (2479)act 34
Takedowns0.4 (0.01.7)act 1
Jaynes31%
Wins by
Model
Equity
Mkt
KO / TKO6%20%14%
Submission8%26%7%
Decision17%54%8%
Predicted output
Sig. strikes38 (1652)act 11
Takedowns1.4 (0.04.3)act 0
Combined totals~97 sig strikes~1.8 takedownsmkt —
How it ends
mkt —
R127%
R214%
R35%
Distance54%
Fighter props
Most sig. strikestie 1.0%
Smith
62.9%-174
Jaynes
+17436.1%
Most takedownstie 30.4%
Smith
14.0%+396
Jaynes
-39655.6%
Significant strikes — over/under
Smith
Expected: 58.3
58.5
Over 58.5
39.6%
+152
Under 58.5
60.4%
-152
073146
Jaynes
Expected: 38.3
38.5
Over 38.5
39.5%
+153
Under 38.5
60.5%
-153
04896
Takedowns — over/under
Smith
Expected: 0.4
0.5
Over 0.5
26.4%
+279
Under 0.5
73.6%
-279
035
Jaynes
Expected: 1.4
1.5
Over 1.5
44.8%
+123
Under 1.5
55.2%
-123
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 10.5 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
Smith69.1%73.7%−4.6-350
Jaynes30.9%26.3%+4.6+260
By method
Smith by KO/TKO18.0%51.9%−33.9-175
Smith by submission13.7%4.8%+8.9+1601
Smith by decision37.3%14.8%+22.5+450
Jaynes by KO/TKO8.1%13.6%−5.5+500
Jaynes by submission6.1%6.8%−0.7+1100
Jaynes by decision16.7%8.1%+8.6+900
Total rounds (over)
Over 1.5 rds72.9%39.0%+33.9+140
Over 2.5 rds59.2%27.4%+31.8+240
Goes the distance
Fight goes to decision54.0%23.4%+30.6+300

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
78.7Striking59.8
Smith +18.9
0.0Grappling25.3
Jaynes +25.3
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
SmithJaynes
Tale of the tape
Ratings (Elo)
1534
Pound-for-pound
1509
1520
Divisional
1525
1513
Striking offense
1497
1499
Striking defense
1487
1500
Grappling offense
1530
1500
Grappling defense
1525
Physical
27 yrs
Age
31 yrs
5'9"
Height
5'7"
76"
Reach
68"
Orthodox
Stance
Orthodox
Striking (UFC career)
5.28
Strikes landed / min
4.79
53%
Strike accuracy
43%
2.92
Strikes absorbed / min
7.82
61%
Strike defense
61%
Grappling (UFC career)
0.00
Takedowns / 15 min
0.00
Takedown accuracy
0%
Takedown defense
50%
0.0
Sub attempts / 15 min
0.9
Form & résumé
67%
UFC win rate
33%
-1
Win/loss streak
-2
67%
Last-5 win rate
33%
100%
Finish rate
100%
Recent opp. quality
539
Days since last fight
63
Recent form (last 5 UFC)
Devonte Smith
  • LKhama WorthyKO/TKO R1
    Close -10001y 6mo before
  • WDong Hyun MaKO/TKO R1
    Close -2702y before
  • WJulian ErosaKO/TKO R1
    Close -2302y 3mo before
Justin Jaynes
  • LGabriel BenitezKO/TKO R1
    Close +1702mo before
  • LGavin TuckerSUB R3
    Close +1126mo before
  • WFrank CamachoKO/TKO R1
    Close +2808mo before
Smith — win / loss by method
Record: 10-2-0

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
9 wins, 2 losses
W
90% of wins
L
100% of losses
Submission
1 win, 0 losses
W
10% of wins
L
0% of losses
Decision
0 wins, 0 losses
W
0% of wins
L
0% of losses
UFC
2win1loss0draw0NC
WinsLosses
2 (100%)KO/TKO(100%) 1
0 (0%)Submission(0%) 0
0 (0%)Decision(0%) 0
Non-UFC
8win1loss0draw0NC
WinsLosses
7 (88%)KO/TKO(100%) 1
1 (13%)Submission(0%) 0
0 (0%)Decision(0%) 0
Jaynes — win / loss by method
Record: 16-6-0

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, 1 loss
W
50% of wins
L
17% of losses
Submission
5 wins, 1 loss
W
31% of wins
L
17% of losses
Decision
2 wins, 4 losses
W
13% of wins
L
67% of losses
DQ / other
1 win, 0 losses
W
6% of wins
L
0% of losses
UFC
1win2loss0draw0NC
WinsLosses
1 (100%)KO/TKO(50%) 1
0 (0%)Submission(50%) 1
0 (0%)Decision(0%) 0
Non-UFC
15win4loss0draw0NC
WinsLosses
7 (47%)KO/TKO(0%) 0
5 (33%)Submission(0%) 0
2 (13%)Decision(100%) 4
1 (7%)DQ / other(0%) 0

Profiles

Experience
Smith
Jaynes
3
UFC fights
3
8.9 min · 3.0 avg
Octagon time
16.5 min · 5.5 avg
10y 10m
Career length
13y 4m
UFC schedule strength

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

Smith
Jaynes
52W–19L · 73.2%
Overall
55W–17L · 76.4%
38W–13L · 74.5%
Wins
23W–8L · 74.2%
14W–6L · 70.0%
Losses
32W–9L · 78.0%
Non-UFC schedule strength
Smith
Jaynes
38W–12L · 76.0%
Overall
80W–37L · 68.4%
36W–12L · 75.0%
Wins
63W–30L · 67.7%
2W–0L · 100.0%
Losses
17W–7L · 70.8%
Distance striking
Smith
Jaynes
4.44
Landed / min
4.43
50.0%
Accuracy
39.1%
62.9%
Defense
61.4%
3.37
Knockdowns / 15 min
1.82
98.7%
Time at distance
86.1%
Grappling & control
Smith
Jaynes
0.00
Takedowns / 15 min
0.00
Takedown accuracy
0.0%
Takedown defense
50.0%
0.00
Sub attempts / 15 min
0.91
71.4%
Control share
32.8%
Strike target map
Smith
  • Head55%(26)div 65%
  • Body11%(5)div 18%
  • Legs34%(16)div 16%
Jaynes
  • Head76%(60)div 65%
  • Body24%(19)div 18%
  • Legs0%(0)div 16%

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

Devonte Smith
CloseSSTDKDCtrl

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

Justin Jaynes
CloseSSTDKDCtrl

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