UFC 23: Ultimate Japan 2
Chiba, Japan
19 Nov 1999
Middleweight
VS
88%
Jackson
12%
Yamamiya
Win Probability
KO/TKO
Round 3 · 3:12
EJ
Eugene Jackson
"The Wolf"
15 – 9
5'8"Orthodox59 yrsKnockout Artist
CFR 17
KY
Keiichiro Yamamiya
45 – 35
Well-Rounded53 yrsSouthpaw5'11"
CFR 2

Combatrics Intelligence

Data-driven breakdown · fighter metrics

Edge: Jackson

Jackson is a strong favourite at 88% win probability per the CFR ratings. The data points decisively in one direction.

Key angles

The CFR gap of 14 points suggests a clear performance difference on paper.

Jackson has beaten significantly higher-quality opposition — a QoV edge of 52 points.

Jackson has the striking edge in both volume and accuracy.

Risk flags

Jackson's chin rating of 42 flags durability concerns based on KO history.

Jackson
Yamamiya
Physical Matchup
Height · Reach · Age · Stance
5'8"
Height
+5'11"
59
Age
+53
Orthodox
Stance
Southpaw
Jackson
Yamamiya
Composite Fighter Rating
Overall score combining performance, win quality, momentum & durability
16.5
2.2
48.0
Performance Avg
0.0
52
Quality of Victory
0
26
Momentum Score
0
Jackson
Yamamiya
Striking
Significant strikes per minute & accuracy
0.6
0.3
34%
Strike Accuracy
25%
7.5
Striking Style Score (/10)
0.0
2 KOs
KO Finishes
0 KOs
Strike targetStrike target
7
Head
4
0
Body
0
0
Leg
0
RangeRange
2Distance4
5Clinch0
0Ground0
Jackson
Yamamiya
Grappling
Takedowns, submissions & wrestling
2.7
/ 10
0.0
/ 10
1.9
Wrestling Style (/10)
0.0
3.3
Submission Style (/10)
0.0
1
Submission wins
0
Per-fight takedown stats will populate after live card results are scraped
Jackson
Yamamiya
Durability / Chin
Resilience against knockouts and stoppages
42
78
KO risk
Verdict
Moderate
1
KO/TKO Losses
1
3
Sub Losses
0
Avg R1.0 stoppage
KO round context
Avg R3.0 stoppage
Most recent fight
Last KO loss
Most recent fight
—
Strikes absorbed / min
—
7/24 fights
Chin rating based on
1/80 fights
Jackson
Yamamiya
Form & Momentum
Recent fight performance — most recent weighted 30%
26
0
L · KO · R1
W · Sub · R2
L · Sub · R1
L · Sub · R1
L · Sub · R1
Last 5
L · KO · R3
Jackson
Yamamiya
Finish Rate
Percentage of wins by KO/TKO or Submission
100%
0%
2
KO / TKO Wins
0
1
Submission Wins
0
0
Decision Wins
0

Style Fingerprint

Combatrics radar — 6 fighting dimensions scored 0–10

Jackson
Yamamiya
Striking7.5 / 0.0Volume0.9 / 0.0Grappling2.7 / 0.0Wrestling1.9 / 0.0Submission3.3 / 0.0Pressure8.3 / 0.0
Fighter 1
Fighter 2
7.5
Striking
KO power & stand-up volume
0.0
2.7
Grappling
Ground control & clinch
0.0
1.9
Wrestling
Takedown threat & defence
0.0
3.3
Submission
Submission attack frequency
0.0
8.3
Pressure
Clinch/ground work rate
0.0
0.9
Volume
Decision-pace fighting
0.0
Jackson
Strike Zones
Yamamiya
Jackson
Attacking
7HEAD0BODY0LEGS7 landed
Absorbing
4HEAD0BODY0LEGS4 absorbed
Yamamiya
Attacking
4HEAD0BODY0LEGS4 landed
Absorbing
7HEAD0BODY0LEGS7 absorbed
Targeting Overlap
🎯Jackson targets the head (100% of attacks) — Yamamiya absorbs 100% of strikes there
🎯Yamamiya targets the head (100% of attacks) — Jackson absorbs 100% of strikes there

Round by Round

This fight · per-round breakdown

Jackson
RND
Yamamiya
0/0R00/0
0/0R10/0

Jackson · QOF Timeline

Avg: 3.1
0105.2W5.5W1.5L1.5L1.5L5.2W1.5L1999-072000-042001-092002-07
WinLossTrend

Jackson · Last 5

L · KO · R1
Mark WeirRating 1.5
KO/TKO
UFC 38: Brawl at the Hall · 2002-07
W · Sub · R2
Keith RockelRating 5.2
Submission
UFC 35: Throwdown · 2002-01
L · Sub · R1
Ricardo AlmeidaRating 1.5
Submission
UFC 33: Victory in Vegas · 2001-09
L · Sub · R1
Jeremy HornRating 1.5
Submission
UFC 27: Ultimate Bad Boyz · 2000-09
L · Sub · R1
Sanae KikutaRating 1.5
Submission
UFC 25: Ultimate Japan 3 · 2000-04

Yamamiya · Last 1

L · KO · R3
Eugene JacksonRating 4
KO/TKO
UFC 23: Ultimate Japan 2 · 1999-11

News & Media

Eugene Jackson · Keiichiro Yamamiya
← Back to fights