The Ultimate Fight Fan
+ Log a bet
UFC 23: Ultimate Japan 2
Eugene Jackson
Eugene Jackson
10-3-1 · USA
VS
Keiichiro Yamamiya
Keiichiro Yamamiya
17-12-5 · JPN
November 19, 1999 · Chiba, Japan
Middleweight · 3 rounds
196.0lb
Weigh-in
188.0lb
Eugene Jackson def. Keiichiro Yamamiya by KO/TKO (Punch), R3 3:12
Performance
Round by round
SSTDKDCtrl
R1
Jackson5/340/000:55
Yamamiya5/160/000:06
R2
Jackson10/410/000:51
Yamamiya5/260/000:28
R3 · 3:12
Jackson7/300/110:50
Yamamiya4/160/000:18
Total
Jackson22/1050/112:36
Yamamiya14/580/000:52

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
JacksonWin probabilityYamamiya
23.9%76.1%
KO / TKO
31%
Submission
21%
Decision
48%
Expected fight time: 9.6 min
What drives the pick

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

Predicted outcomes
Jackson24%
Wins by
Model
Equity
Mkt
KO / TKO8%33%
Submission10%40%
Decision6%27%
Predicted output
Sig. strikes54 (3170)act 22
Takedowns0.4 (0.01.7)act 0
Yamamiya76%
Wins by
Model
Equity
Mkt
KO / TKO23%30%
Submission12%16%
Decision41%54%
Predicted output
Sig. strikes52 (3068)act 14
Takedowns0.8 (0.02.3)act 0
Combined totals~107 sig strikes~1.2 takedownsmkt —
How it ends
mkt —
R137%
R29%
R37%
Distance47%
Fighter props
Most sig. strikestie 1.0%
Jackson
50.9%-106
Yamamiya
+10648.0%
Most takedownstie 33.3%
Jackson
20.9%+219
Yamamiya
-21945.8%
Significant strikes — over/under
Jackson
Expected: 54.2
54
Over 54
42.1%
+135
Exactly 54
1.2%
push
Under 54
56.7%
-135
068136
Yamamiya
Expected: 52.5
52.5
Over 52.5
42.5%
+135
Under 52.5
57.5%
-135
066132
Takedowns — over/under
Jackson
Expected: 0.4
0.5
Over 0.5
70.6%
-240
Under 0.5
29.4%
+240
035
Yamamiya
Expected: 0.8
1
Over 1
36.0%
-293
Exactly 1
51.7%
push
Under 1
12.3%
+293
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 9.6 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

No market on record for this bout.

Trait web
Str/minStr accStr defAbsorbedTD/15TD accTD defSubs
Hover a point to see the values
JacksonYamamiya
Tale of the tape
Ratings (Elo)
1525
Pound-for-pound
1503
1525
Divisional
1503
1507
Striking offense
1500
1507
Striking defense
1500
1503
Grappling offense
1500
1496
Grappling defense
1500
Physical
33 yrs
Age
27 yrs
5'8"
Height
5'11"
Reach
Orthodox
Stance
Southpaw
Striking (UFC career)
3.32
Strikes landed / min
46%
Strike accuracy
1.74
Strikes absorbed / min
58%
Strike defense
Grappling (UFC career)
0.00
Takedowns / 15 min
Takedown accuracy
75%
Takedown defense
2.4
Sub attempts / 15 min
Form & résumé
100%
UFC win rate
+1
Win/loss streak
100%
Last-5 win rate
100%
Finish rate
Recent opp. quality
126
Days since last fight
Recent form (last 5 UFC)
Eugene Jackson
  • WRoyce AlgerKO/TKO R2
    4mo before
Keiichiro Yamamiya
No prior UFC fights.
Jackson — win / loss by method
Record: 10-3-1

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
2 wins, 1 loss
W
20% of wins
L
33% of losses
Submission
8 wins, 2 losses
W
80% of wins
L
67% 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
9win3loss1draw0NC
WinsLosses
1 (11%)KO/TKO(33%) 1
8 (89%)Submission(67%) 2
0 (0%)Decision(0%) 0
Yamamiya — win / loss by method
Record: 17-12-5

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
24% of wins
L
8% of losses
Submission
2 wins, 5 losses
W
12% of wins
L
42% of losses
Decision
11 wins, 6 losses
W
65% of wins
L
50% of losses
UFC
0win0loss0draw0NC
WinsLosses
0 ()KO/TKO() 0
0 ()Submission() 0
0 ()Decision() 0
Non-UFC
17win12loss5draw0NC
WinsLosses
4 (24%)KO/TKO(8%) 1
2 (12%)Submission(42%) 5
11 (65%)Decision(50%) 6

Profiles

Experience
Jackson
Yamamiya
1
UFC fights
0
6.3 min · 6.3 avg
Octagon time
28y 4m
Career length
UFC schedule strength

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

Jackson
Yamamiya
3W–1L · 75.0%
Overall
3W–1L · 75.0%
Wins
0W–0L
Losses
Non-UFC schedule strength
Jackson
Yamamiya
6W–5L · 54.5%
Overall
247W–200L · 55.3%
0W–3L · 0.0%
Wins
132W–115L · 53.4%
6W–2L · 75.0%
Losses
115W–85L · 57.5%
1 of Jackson's non-UFC opponents have no record in our data, so this is understated. Refresh data to fill them in.
Distance striking
Jackson
Yamamiya
4.06
Landed / min
32.4%
Accuracy
100.0%
Defense
2.37
Knockdowns / 15 min
42.9%
Time at distance
Grappling & control
Jackson
Yamamiya
0.00
Takedowns / 15 min
Takedown accuracy
75.0%
Takedown defense
2.37
Sub attempts / 15 min
11.6%
Control share
Strike target map
Jackson
  • Head71%(15)div 65%
  • Body29%(6)div 17%
  • Legs0%(0)div 18%
Yamamiya
  • Head0%(0)div 65%
  • Body0%(0)div 17%
  • Legs0%(0)div 18%
  • No strike data on record.

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

Eugene Jackson
CloseSSTDKDCtrl

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

Keiichiro Yamamiya

No UFC fights on record.

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