RK
Super bantamweight · Japan
Royal Kobayashi 37-8-0 28 KO · 1973–1981
Royal Kobayashi was a super bantamweight boxer from Japan, born Oct 10, 1949. Record 37-8-0 with 28 knockouts over 1973–1981. World titles: WBC super bantamweight (1976). Royal Kobayashi last fought Jung Han Hwang on Oct 18, 1981 and lost by KO in round 1 of 12.
Also: Кадзуо Кобаяси · رويال كوباياشى · رويال كوباياشي +7 more رویال کوبایاشی · ロイヤル小林 · KO仕掛人 · Kazuo Kobayashi · Kobayashi Kazuo · Кобаяси, Кадзуо · 小林和男
Born Oct 10, 1949
Died Nov 17, 2020
Country 🇯🇵 Japan
Stance Orthodox
Nickname KO maker
Debut Feb 15, 1973
Career 1973–1981
Rounds boxed 300
KO share 76%
Born in Shimomashiki District, Kumamoto, Japan
Titles WBC super bantamweight · 1976
Boxerbook rating 1544 ± 267 · inactive since Oct 1981Why here › Confirmed bouts 5 of 45
Career record Record
37-8-0, 28 KOs · 1973–1981
Last result L
Jung Han Hwang
Lost OPBF featherweight title KO 1/12 · Munhwa Gymnasium, Seoul, 🇰🇷
The record 45 bouts, 1973–1981, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 43, Wikipedia (ja) · 43
L
Jung Han Hwang
Lost OPBF featherweight title KO 1/12 · Munhwa Gymnasium, Seoul, 🇰🇷
Kobayashi 37-7-0 · Hwang —
L
Young Se Oh
UD 12/12 · Munhwa Gymnasium, Seoul, 🇰🇷
Kobayashi 37-6-0 · Oh —
W
Dae Hwan Lee
Retained OPBF featherweight title PTS 12/12 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 36-6-0 · Lee —
W
Koichi Matsushima
Retained OPBF featherweight title KO 8/12 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 35-6-0 · Matsushima —
W
Dae Hwan Lee
Retained OPBF featherweight title SD 12/12 · Japan
Kobayashi 34-6-0 · Lee —
W
Takao Maruki
Retained OPBF featherweight title KO 6/12 · Nagoya, 🇯🇵
Kobayashi 33-6-0 · Maruki —
W
Masa Ito
KO 7/10 · City Gymnasium, Hofu, 🇯🇵
Kobayashi 32-6-0 · Ito —
W
Kashi Keno
KO 6/10 · Japan
Kobayashi 31-6-0 · Keno —
W
Suk Tae Yun
Retained OPBF featherweight title UD 12/12 · Aomori City, 🇯🇵
Kobayashi 30-6-0 · Yun —
W
Chong Yun Lee
KO 5/10 · Seoul, 🇰🇷
Kobayashi 29-6-0 · Lee —
L
Hikaru Tomonari
MD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 29-5-0 · Tomonari —
W
Bok Soo Hwang
Retained OPBF featherweight title PTS 12/12 · Kumamoto, 🇯🇵
Kobayashi 28-5-0 · Hwang —
L
For WBA featherweight title RTD 13/15 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 28-4-0 · Pedroza 20-3-0
W
Retained OPBF featherweight title SD 12/12 · Japan
Kobayashi 27-4-0 · Nemoto —
W
Bok Soo Hwang
Won OPBF featherweight title TKO 10/12 · Japan
Kobayashi 26-4-0 · Hwang —
L
For WBC super bantamweight title KO 3/15 · Municipal Gymnasium, Kitakyushu, 🇯🇵
Kobayashi 26-3-0 · Gómez 17-0-1
W
Toshi Nakai
TKO 1
Kobayashi 25-3-0 · Nakai —
W
Satoshi Nakai
TKO 1/10 · Japan
Kobayashi 24-3-0 · Nakai —
W
Shigeru Sasaki
KO 1/10 · Japan
Kobayashi 23-3-0 · Sasaki —
W
Blazer Okubo
KO 7/10 · Ōtsu, 🇯🇵
Kobayashi 22-3-0 · Okubo —
Show all 45 bouts L
Lost WBC super bantamweight title MD 15/15 · Jangchung Gymnasium, Seoul, 🇰🇷
Kobayashi 22-2-0 · Dong-kyun —
W
Won WBC super-bantamweight title KO 8/15 · Kuramae Kokugikan, Tokyo, 🇯🇵
Kobayashi 21-2-0 · Riasco 24-5-4
W
Jaguar Sekino
TKO 5/10 · Japan
Kobayashi 20-2-0 · Sekino —
L
Emilio Salcedo
UD 10/10 · Feria de David, David, 🇵🇦
Kobayashi 20-1-0 · Salcedo —
W
UD 10/10 · Japan
Kobayashi 19-1-0 · Ushiwakamaru 34-18-15
L
For WBA & The Ring featherweight titles KO 5/15 · Kuramae Kokugikan, Tokyo, 🇯🇵
Kobayashi 19-0-0 · Argüello 40-4-0
W
Hwa Ryong Yuh
KO 4/10 · Japan
Kobayashi 18-0-0 · Yuh —
W
Zensuke Utagawa
KO 2/12 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 17-0-0 · Utagawa —
W
Jun Gallego
KO 9/10 · Sendai, 🇯🇵
Kobayashi 16-0-0 · Gallego —
W
Masanao Toyoshima
KO 6/10 · Japan
Kobayashi 15-0-0 · Toyoshima —
W
Sanjo Takemori
KO 2/10 · Japan
Kobayashi 14-0-0 · Takemori —
W
Bert Nabalatan
UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 13-0-0 · Nabalatan —
W
Ryu Fukita
KO 4/10 · Osaka, 🇯🇵
Kobayashi 12-0-0 · Fukita —
W
Freddie Mensah
KO 7/10 · Japan
Kobayashi 11-0-0 · Mensah —
W
RTD 6/10 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 10-0-0 · Medel —
W
Sung Jong Hong
KO 3/10 · Japan
Kobayashi 9-0-0 · Hong —
W
Hiroshi Nunose
KO 4/10 · Japan
Kobayashi 8-0-0 · Nunose —
W
Jaguar Sekino
KO 2/10 · Japan
Kobayashi 7-0-0 · Sekino —
W
Nam Chul Chung
KO 5/10 · Japan
Kobayashi 6-0-0 · Chung —
W
Katsutoshi Inuzuka
KO 5/10 · Japan
Kobayashi 5-0-0 · Inuzuka —
W
Victor Dounue
KO 7/10 · Kumamoto, 🇯🇵
Kobayashi 4-0-0 · Dounue —
W
Hiroshi Miura
KO 2/10 · Japan
Kobayashi 3-0-0 · Miura —
W
Gypsy Sato
KO 2/8 · Japan
Kobayashi 2-0-0 · Sato —
W
Baron Kumazawa
PTS 8/8 · Korakuen Hall, Tokyo, 🇯🇵
Kobayashi 1-0-0 · Kumazawa —
W
Baron Kumasawa
DEC 8/8
Kobayashi 0-0-0 · Kumasawa —
Amateur career Amateur record 34–3 (Wikipedia )
3 amateur bouts at major tournaments, from the tournament articles on English Wikipedia (CC BY-SA). Not part of the professional record.
Ratings now Not in any current ranking.
World titles
Facts
What is Royal Kobayashi's record? Royal Kobayashi's professional record is 37-8-0 with 28 knockouts.
Who did Royal Kobayashi fight last? Royal Kobayashi last fought Jung Han Hwang on Oct 18, 1981 and lost by KO in round 1 of 12.
Which world titles has Royal Kobayashi held? Royal Kobayashi has held 1 world title reign: WBC super bantamweight (1976). Sources Boxerbook ID 1168 · permanent link boxerbook.com/id/1168 . Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.