Boxers / Katsuya Onizuka / Boxerbook rating

Katsuya Onizuka: Boxerbook rating

Katsuya Onizuka has a Boxerbook rating of 1813 ± 253 from 25 counted bouts, as of Oct 13, 2026. Not in a division list: inactive since Sep 1994 (no bout for 12 months).

Rating1813 ± 253
Placenot listed
Counted bouts25
Unknown opponents18 of 25
Schedule, career1203
Schedule, 36 monthsno bouts
Form, last 52.5 of 3.5
Data confidence8%
Statusinactive since Sep 1994

Rating over time

high 1985 · low 1555Apr 1988Aug 1995

μ at the end of each month with a bout, and of every month while active. Red dot: latest.

Bouts behind the rating

Every counted bout, newest first: the change in μ it caused (green up, red down), its weight and the rating after it. Unknown opponents: 18 of 25 bouts.

L
Hyung-Chul Lee
Lost WBA super flyweight title
Sep 18, 1994 · TKO 9/12 · weight ×1.65 · opponent 1585
−172
→ 1813
W
Seung Koo Lee (no page: counted as 1100)
Retained WBA super flyweight title
Apr 3, 1994 · UD 12/12 · weight ×1.65
+5
→ 1985
W
Thanomsak Sithbaobay
Retained WBA super flyweight title
Nov 5, 1993 · UD 12/12 · weight ×1.65 · opponent 1535
+22
→ 1980
W
Jae Shin Lim (no page: counted as 1100)
Retained WBA super flyweight title
May 21, 1993 · SD 12/12 · weight ×1.65
+6
→ 1959
W
Armando Castro (no page: counted as 1100)
Retained WBA super flyweight title
Dec 11, 1992 · UD 12/12 · weight ×1.65
+6
→ 1953
W
Kenji Matsumura
Retained WBA super flyweight title
Sep 11, 1992 · TKO 5/12 · weight ×1.65 · opponent 1413
+18
→ 1947
W
Thanomsak Sithbaobay
Won vacant WBA super flyweight title
Apr 10, 1992 · UD 12/12 · weight ×1.65 · opponent 1591
+43
→ 1929
W
Chan Woo Park (no page: counted as 1100)
Nov 4, 1991 · TKO 7/10 · weight ×1.05
+6
→ 1886
W
Suzuharu Kitazawa
Retained Japanese super flyweight title
Jun 17, 1991 · KO 5/10 · weight ×1.10 · opponent 1538
+31
→ 1880
W
Shun'ichi Nakajima
Japanese title, 2nd defence
Mar 18, 1991 · DEC 10/10 · weight ×1.10 · opponent 1296
+15
→ 1849
W
Tomohiko Yokoyama (no page: counted as 1100)
Retained Japanese super flyweight title
Dec 17, 1990 · KO 1/10 · weight ×1.10
+10
→ 1834
W
Shun'ichi Nakajima
Japanese super flyweight title
Oct 15, 1990 · TKO 10/10 · weight ×1.10 · opponent 1328
+22
→ 1824
W
Tatsuya Sugi (no page: counted as 1100)
May 22, 1990 · TKO 7/10 · weight ×1.05
+12
→ 1802
W
Rex Rapiso (no page: counted as 1100)
Mar 19, 1990 · KO 1/10 · weight ×1.05
+13
→ 1790
W
Kyung Min Ahn (no page: counted as 1100)
Dec 18, 1989 · KO 1/10 · weight ×1.05
+14
→ 1778
W
Dok Hyun Kim (no page: counted as 1100)
Oct 16, 1989 · KO 5/10 · weight ×1.05
+15
→ 1764
W
Sang Won Lee (no page: counted as 1100)
Aug 21, 1989 · KO 4/10 · weight ×1.05
+17
→ 1749
W
Masao Kawanishi (no page: counted as 1100)
May 15, 1989 · KO 2/8 · weight ×1.00
+18
→ 1732
W
Yutaka Sakamoto (no page: counted as 1100)
Feb 27, 1989 · KO 2/6 · weight ×0.90
+19
→ 1714
W
Mitsumasa Ikeda (no page: counted as 1100)
Dec 21, 1988 · PTS 6/6 · weight ×0.90
+21
→ 1696
Show all 25 counted bouts
W
Ryoji Take (no page: counted as 1100)
Nov 9, 1988 · KO 3/4 · weight ×0.80
+22
→ 1674
W
Tetsuya Esu (no page: counted as 1100)
Sep 19, 1988 · KO 3/4 · weight ×0.80
+26
→ 1652
W
Shigeru Ito (no page: counted as 1100)
Jul 18, 1988 · KO 1/4 · weight ×0.80
+31
→ 1627
W
Satoshi Kada (no page: counted as 1100)
Jun 20, 1988 · KO 1/4 · weight ×0.80
+40
→ 1595
W
Shoji Akiyama (no page: counted as 1100)
Apr 18, 1988 · KO 1/4 · weight ×0.80
+55
→ 1555

Publishers and Boxerbook

Consensus: no publisher lists for the division (a list without them counts as 16).

WBC
not in top 15
WBA
not in top 15
IBF
not in top 15
WBO
not in top 15
Ring
not in top 15
TBRB
not in top 15
Boxerbook
not listed

How the Boxerbook rating works · Katsuya Onizuka: record and titles