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UFC Fight Night: Lewis vs. Spivac
Rinya Nakamura
Rinya Nakamura
4-0 · JPN
VS
Toshiomi Kazama
Toshiomi Kazama
9-2 · JPN
February 4, 2023 · Las Vegas, Nevada, USA
Bantamweight · 3 rounds
135.0lb
Weigh-in
136.0lb
Rinya Nakamura def. Toshiomi Kazama by KO/TKO (Punch), R1 0:33
Performance
Round by round
SSTDKDCtrl
R1 · 0:33
Nakamura11/250/020:03
Kazama4/100/000:00
Total
Nakamura11/250/020:03
Kazama4/100/000:00

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
NakamuraWin probabilityKazama
55.2%44.8%
KO / TKO
28%
Submission
24%
Decision
49%
Expected fight time: 10.1 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 Nakamura, blue toward Kazama. Tap a bar for why.

Predicted outcomes
Nakamura55%
Wins by
Model
Equity
Mkt
KO / TKO17%30%41%
Submission9%17%13%
Decision29%53%23%
Predicted output
Sig. strikes32 (1343)act 11
Takedowns3.0 (0.17.0)act 0
Kazama45%
Wins by
Model
Equity
Mkt
KO / TKO11%25%7%
Submission14%32%9%
Decision20%43%7%
Predicted output
Sig. strikes35 (1447)act 4
Takedowns0.4 (0.01.8)act 0
Combined totals~67 sig strikes~3.4 takedownsmkt —
How it ends
mkt —
R130%
R213%
R38%
Distance49%
Fighter props
Most sig. strikestie 1.4%
Nakamura
46.5%+112
Kazama
-11252.0%
Most takedownstie 11.1%
Nakamura
80.6%-980
Kazama
+9808.2%
Significant strikes — over/under
Nakamura
Expected: 32.0
32
Over 32
39.1%
+152
Exactly 32
1.5%
push
Under 32
59.4%
-152
04181
Kazama
Expected: 34.7
34.5
Over 34.5
40.0%
+150
Under 34.5
60.0%
-150
04487
Takedowns — over/under
Nakamura
Expected: 3.0
3
Over 3
40.2%
+113
Exactly 3
14.6%
push
Under 3
45.2%
-113
0510
Kazama
Expected: 0.4
0.5
Over 0.5
30.6%
+227
Under 0.5
69.4%
-227
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 10.1 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
Nakamura55.2%80.4%−25.2-534
Kazama44.8%19.6%+25.2+387
By method
Nakamura by KO/TKO15.2%41.3%−26.1-102
Nakamura by submission13.1%12.7%+0.4+546
Nakamura by decision27.0%23.2%+3.8+253
Kazama by KO/TKO12.3%6.8%+5.5+1114
Kazama by submission10.6%9.3%+1.3+782
Kazama by decision21.9%6.7%+15.2+1129
Total rounds (over)
Over 1.5 rds70.1%55.1%+15.0-143
Over 2.5 rds56.7%37.6%+19.1+149
Goes the distance
Fight goes to decision48.8%32.0%+16.8+193

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.

Tale of the tape
Ratings (Elo)
1514
Pound-for-pound
1525
1514
Divisional
1525
1474
Striking offense
1500
1500
Striking defense
1500
Grappling offense
Grappling defense
Physical
27 yrs
Age
25 yrs
5'7"
Height
5'7"
68"
Reach
69"
Southpaw
Stance
Orthodox
Striking (UFC career)
Strikes landed / min
Strike accuracy
Strikes absorbed / min
Strike defense
Grappling (UFC career)
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Form & résumé
UFC win rate
Win/loss streak
Last-5 win rate
Finish rate
Recent opp. quality
Days since last fight
Recent form (last 5 UFC)
Rinya Nakamura
No prior UFC fights.
Toshiomi Kazama
No prior UFC fights.
Nakamura — win / loss by method
Record: 4-0-0

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
3 wins, 0 losses
W
75% of wins
L
Submission
0 wins, 0 losses
W
0% of wins
L
Decision
1 win, 0 losses
W
25% of wins
L
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
4win0loss0draw0NC
WinsLosses
3 (75%)KO/TKO() 0
0 (0%)Submission() 0
1 (25%)Decision() 0
Kazama — win / loss by method
Record: 9-2-0

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
3 wins, 1 loss
W
33% of wins
L
50% of losses
Submission
5 wins, 0 losses
W
56% of wins
L
0% of losses
Decision
1 win, 1 loss
W
11% of wins
L
50% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
9win2loss0draw0NC
WinsLosses
3 (33%)KO/TKO(50%) 1
5 (56%)Submission(0%) 0
1 (11%)Decision(50%) 1

Profiles

Experience
Nakamura
Kazama
0
UFC fights
0
Octagon time
Career length
UFC schedule strength

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

Nakamura
Kazama
Overall
Wins
Losses
Non-UFC schedule strength
Nakamura
Kazama
35W–15L · 70.0%
Overall
54W–46L · 54.0%
35W–15L · 70.0%
Wins
49W–43L · 53.3%
0W–0L
Losses
5W–3L · 62.5%
Distance striking
Nakamura
Kazama
Landed / min
Accuracy
Defense
Knockdowns / 15 min
Time at distance
Grappling & control
Nakamura
Kazama
Takedowns / 15 min
Takedown accuracy
Takedown defense
Sub attempts / 15 min
Control share
Strike target map
Nakamura
  • Head0%(0)div 62%
  • Body0%(0)div 21%
  • Legs0%(0)div 17%
  • No strike data on record.
Kazama
  • Head0%(0)div 62%
  • Body0%(0)div 21%
  • Legs0%(0)div 17%
  • No strike data on record.

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

Rinya Nakamura

No UFC fights on record.

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

Toshiomi Kazama

No UFC fights on record.

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