★ Championship Bout · Light Heavyweight
UFC - Ultimate Japan
Yokohama, Japan
21 Dec 1997
Light Heavyweight
VS
57%
Shamrock
43%
Jackson
Win Probability
Submission
Round 1 · 0:16
FS
Frank Shamrock
23 – 10
5'10"Orthodox53 yrs5-fight win streakPressure Fighter
CFR 32
KJ
Kevin Jackson
4 – 2
Pressure Fighter2-fight slide61 yrsSwitch5'10"
CFR 25

Combatrics Intelligence

Data-driven breakdown · fighter metrics

Edge: Shamrock

This is a genuine toss-up — Shamrock at 57% vs Jackson at 43% (CFR ratings). One of the hardest fights to call on the card.

Key angles

The CFR gap of 8 points suggests a clear performance difference on paper.

Jackson has the striking edge in both volume and accuracy.

Shamrock
Jackson
Physical Matchup
Height · Reach · Age · Stance
5'10"
Height
5'10"
53+
Age
61
Orthodox
Stance
Switch
Shamrock
Jackson
Composite Fighter Rating
Overall score combining performance, win quality, momentum & durability
32.2
24.5
89.0
Performance Avg
68.0
82
Quality of Victory
80
100
Momentum Score
58
Shamrock
Jackson
Striking
Significant strikes per minute & accuracy
1.6
2.5
65%
Strike Accuracy
66%
6.0
Striking Style Score (/10)
6.0
2 KOs
KO Finishes
1 KOs
Strike targetStrike target
1
Head
1
0
Body
1
0
Leg
0
RangeRange
1Distance2
0Clinch0
0Ground0
Shamrock
Jackson
Grappling
Takedowns, submissions & wrestling
—
—
1.4
Sub Attempts / fight
—
4.8
Grappling Style Score (/10)
4.0
3.4
Wrestling Style Score (/10)
2.8
0:00
Control Time (this fight)
0:00
0
Reversals
0
Shamrock
Jackson
Durability / Chin
Resilience against knockouts and stoppages
100
76
Never stopped
Verdict
Never stopped
0
KO/TKO Losses
0
0
Sub Losses
2
—
Strikes absorbed / min
—
5/33 fights
Chin rating based on
4/6 fights
Shamrock
Jackson
Form & Momentum
Recent fight performance — most recent weighted 30%
100
58
5-fight 🔥 win streak
Current form
2-fight 📉 slide
W · KO · R4
W · Sub · R1
W · Sub · R2
W · KO · R1
W · Sub · R1
Last 5
L · Sub · R1
L · Sub · R1
W · Sub · R1
W · KO · R1
Shamrock
Jackson
Finish Rate
Percentage of wins by KO/TKO or Submission
100%
100%
2
KO / TKO Wins
1
3
Submission Wins
1
0
Decision Wins
0

Style Fingerprint

Combatrics radar — 6 fighting dimensions scored 0–10

Shamrock
Jackson
Striking6.0 / 6.0Volume2.0 / 1.0Grappling4.8 / 4.0Wrestling3.4 / 2.8Submission6.0 / 5.0Pressure10.0 / 8.5
Fighter 1
Fighter 2
6.0
Striking
KO power & stand-up volume
6.0
4.8
Grappling
Ground control & clinch
4.0
3.4
Wrestling
Takedown threat & defence
2.8
6.0
Submission
Submission attack frequency
5.0
10.0
Pressure
Clinch/ground work rate
8.5
2.0
Volume
Decision-pace fighting
1.0
Shamrock
Strike Zones
Jackson
Shamrock
Attacking
1HEAD0BODY0LEGS1 landed
Absorbing
1HEAD1BODY0LEGS2 absorbed
Jackson
Attacking
1HEAD1BODY0LEGS2 landed
Absorbing
1HEAD0BODY0LEGS1 absorbed
Targeting Overlap
🎯Shamrock targets the head (100% of attacks) — Jackson absorbs 100% of strikes there
🎯Jackson targets the head (50% of attacks) — Shamrock absorbs 50% of strikes there

Round by Round

This fight · per-round breakdown

Shamrock
RND
Jackson
0/0R00/0

Shamrock · QOF Timeline

Avg: 5.1
0105.0W5.0W5.2W5.0W5.4W1997-121998-031998-051998-101999-09
WinLossTrend

Jackson · QOF Timeline

Avg: 3.3
0105.0W5.0W1.5L1.5L1997-071997-071997-121998-03
WinLossTrend

Shamrock · Last 5

W · KO · R4
Tito OrtizRating 5.4
KO/TKO
UFC 22: Only One Can be Champion · 1999-09
W · Sub · R1
John LoberRating 5
Submission
UFC - Ultimate Brazil · 1998-10
W · Sub · R2
Jeremy HornRating 5.2
Submission
UFC 17: Redemption · 1998-05
W · KO · R1
Igor ZinovievRating 5
KO/TKO
UFC 16: Battle in the Bayou · 1998-03
W · Sub · R1
Kevin JacksonRating 5
Submission
UFC - Ultimate Japan · 1997-12

Jackson · Last 4

L · Sub · R1
Jerry BohlanderRating 1.5
Submission
UFC 16: Battle in the Bayou · 1998-03
L · Sub · R1
Frank ShamrockRating 1.5
Submission
UFC - Ultimate Japan · 1997-12
W · Sub · R1
Tony FryklundRating 5
Submission
UFC 14: Showdown · 1997-07
W · KO · R1
Todd ButlerRating 5
KO/TKO
UFC 14: Showdown · 1997-07

News & Media

Frank Shamrock · Kevin Jackson
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