Super flyweight · Japan
Ken Shiro 27-2-0 17 KO · 2014–2026
Ken Shiro is a super flyweight boxer from Japan, born Jan 6, 1992. Record 27-2-0 with 17 knockouts over 2014–2026. World titles: WBO super flyweight (2026–present), WBA flyweight (2025), WBC flyweight (2024–2025), WBA light flyweight (2022) and 2 more. Ken Shiro last fought Israel Gonzalez on Jul 20, 2026 and won by UD over 12 rounds. Next fight: vs Jassiel Ramon Amador Gamez on Nov 29, 2026 at Tokyo.
Also: Кен Сиро · Терадзі Кенсіро · 拳四朗 +10 more 켄 시로 · Kenshiro Teraji · Kenshirō Teraji · Shirō Ken · Teraji Kenshirō · Кен Сіро · Сиро, Кен · 寺地拳四朗 · 데라지 겐시로 · 테라지 켄시로
Born Jan 6, 1992
Country 🇯🇵 Japan
Stance Orthodox
Reach 164 cm
Nickname The Amazing Boy
Debut Aug 3, 2014
Career 2014–2026
Rounds boxed 233
KO share 63%
Born in Jōyō, Kyoto, Japan
Titles WBA, WBC light flyweight · 2017–2024; WBA, WBC flyweight · 2024–2025; WBO super flyweight · 2026
Boxerbook rating #2 in Super flyweight · 2168 ± 107Why here › Confirmed bouts 27 of 29 · 27 official
Record and next fight Record
27-2-0, 17 KOs · 2014–2026
Next fight
Sun, Nov 29, 2026 scheduled
vs Jassiel Ramon Amador Gamez
WBO junior bantamweight title Tokyo, 🇯🇵 · 12 rounds
Last result W
Won vacant WBO junior-bantamweight title UD 12/12 · Ryogoku Kokugikan, Tokyo, 🇯🇵
The record 29 bouts, 2014–2026, 1 upcoming, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 28, Wikipedia (ja) · 28, Japan Boxing Commission — 試合報告書 · 26, WBA Fights Master Scores · 7, ESPN — Boxing schedule · 1
Upcoming
Jassiel Ramon Amador Gamez
WBO junior bantamweight title 12 rounds · Tokyo, 🇯🇵
Shiro 27-2-0 · Gamez —
W
Won vacant WBO junior-bantamweight title UD 12/12 · Ryogoku Kokugikan, Tokyo, 🇯🇵
Shiro 26-2-0 · Gonzalez 32-6-2
L
For WBA and WBC flyweight titles SD 12/12 · Yokohama Buntai, Kanagawa, 🇯🇵
Shiro 26-1-0 · Sandoval 26-2-0
W
WBA WORLD FLYWEIGHTWBC WORLD FLYWEIGHT TKO 12 · Kokugikan
Shiro 24-1-0 · Kurihara 21-8-1
W
Retained WBC flyweight title TKO 12/12 · Ryogoku Kokugikan, Tokyo, 🇯🇵
Shiro 24-1-0 · Akui 23-2-1
W
Won vacant WBC flyweight title TKO 11/12 · Ariake Arena, Tokyo, 🇯🇵
Shiro 23-1-0 · Rosales 37-7-0
W
Retained WBA, WBC, and The Ring light-flyweight titles MD 12/12 · Edion Arena, Osaka, 🇯🇵
Shiro 22-1-0 · Cañizales 26-1-1
W
For WBA, WBC, and The Ring light-flyweight titles TKO 9/12 · Ariake Arena, Tokyo, 🇯🇵
Shiro 21-1-0 · Budler 37-4-0
W
For WBA, WBC, and The Ring light flyweight titles TKO 9/12 · Ariake Arena, Tokyo, 🇯🇵
Shiro 20-1-0 · Olascuaga 5-0-0
W
Retained WBC light-flyweight title TKO 7/12 · Saitama Super Arena, Saitama, 🇯🇵
Shiro 19-1-0 · Kyoguchi 16-0-0
W
Won WBC light-flyweight title KO 3/12 · Kyoto City Gymnasium, Kyoto, 🇯🇵
Shiro 18-1-0 · Yabuki 13-4-0
L
Lost WBC light-flyweight title TKO 10/12 · Kyoto City Gymnasium, Kyoto, 🇯🇵
Shiro 18-0-0 · Yabuki 12-4-0
W
Retained WBC light-flyweight title UD 12/12 · Edion Arena, Osaka, 🇯🇵
Shiro 17-0-0 · Hisada 34-10-2
W
Retained WBC light-flyweight title TKO 4/12 · Yokohama Arena, Yokohama, 🇯🇵
Shiro 16-0-0 · Petalcorin 31-3-1
W
Retained WBC light-flyweight title TKO 4/12 · Edion Arena, Osaka, 🇯🇵
Shiro 15-0-0 · Taconing 28-3-1
W
Retained WBC light-flyweight title UD 12/12 · Ota Ward General Gymnasium, Tokyo, 🇯🇵
Shiro 14-0-0 · Juárez 24-8-2
W
Retained WBC light-flyweight title TKO 7/12 · Yokohama Arena, Yokohama, 🇯🇵
Shiro 13-0-0 · Melindo 38-3-0
W
For WBC light flyweight title KO 2/12 · Ota Ward General Gymnasium, Ōta, 🇯🇵
Shiro 12-0-0 · López 34-7-0
W
Gilberto Pedroza
Retained WBC light-flyweight title TKO 4/12 · Yokohama Cultural Gymnasium, Yokohama, 🇯🇵
Shiro 11-0-0 · Pedroza —
W
Retained WBC light-flyweight title MD 12/12 · Ryogoku Kokugikan, Tokyo, 🇯🇵
Shiro 10-0-0 · Guevara 30-2-1
Show all 30 bouts W
Won WBC light flyweight title MD 12/12 · Ariake Coliseum, Kōtō, 🇯🇵
Shiro 9-0-0 · López 33-6-0
W
Lester Abutan
Retained OPBF light-flyweight title TKO 3/12 · Korakuen Hall, Tokyo, 🇯🇵
Shiro 8-0-0 · Abutan —
W
Toshimasa Ouchi
Retained Japanese light-flyweight title UD 12/12 · Edion Arena, Osaka, 🇯🇵
Shiro 7-0-0 · Ouchi —
W
Retained Japanese light-flyweight title TKO 1/10 · Korakuen Hall, Tokyo, 🇯🇵
Shiro 6-0-0 · Kakutani —
W
Won Japanese light-flyweight title UD 10/10 · Oyamazaki Town Gymnasium, Kyoto, 🇯🇵
Shiro 5-0-0 · Horikawa 32-13-1
W
Rolly Sumalpong
Won vacant WBC Youth light-flyweight title UD 10/10 · Korakuen Hall, Tokyo, 🇯🇵
Shiro 4-0-0 · Sumalpong —
W
Takashi Omae
TKO 4/8 · Korakuen Hall, Tokyo, 🇯🇵
Shiro 3-0-0 · Omae —
W
Katsunori Nagamine
TKO 7/8 · Korakuen Hall, Tokyo, 🇯🇵
Shiro 2-0-0 · Nagamine —
W
Phunwanai Wor Surapol
TKO 2/8 · KBS Hall, Kyoto, 🇯🇵
Shiro 1-0-0 · Surapol —
W
UD 6/6 · IMP Hall, Osaka, 🇯🇵
Shiro 0-0-0 · Amol —
Ratings now
World titles
Facts
What is Ken Shiro's record? Ken Shiro's professional record is 27-2-0 with 17 knockouts.
When is Ken Shiro's next fight? Ken Shiro is scheduled to fight Jassiel Ramon Amador Gamez on Nov 29, 2026 at Tokyo.
Who did Ken Shiro fight last? Ken Shiro last fought Israel Gonzalez on Jul 20, 2026 and won by UD over 12 rounds.
Which world titles has Ken Shiro held? Ken Shiro has held 6 world title reigns: WBO super flyweight (2026–present), WBA flyweight (2025), WBC flyweight (2024–2025), WBA light flyweight (2022) and 2 more. Sources Boxerbook ID 10187 · permanent link boxerbook.com/id/10187 . Wikidata (CC0), English Wikipedia (CC BY-SA), publisher rankings, photo from the Instagram profile. Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.