Flyweight · Japan
Yoshio Shirai 49-8-4 21 KO · 1943–1955
Photo: 朝日新聞社, Public domain via Wikimedia Commons
Yoshio Shirai was a flyweight boxer from Japan, born Nov 23, 1923. Record 49-8-4 with 21 knockouts over 1943–1955. World titles: WBA flyweight (1952–1954). Yoshio Shirai last fought Pascual Pérez on May 30, 1955 and lost by KO in round 5 of 15.
Also: Ёсио Сираи · يوشيو شيراى · يوشيو شيراي +12 more โยชิโอะ ชิราอิ · 白井義男 · 시라이 요시오 · Shirai Yoshio · Ёсио Сирай · Йосио Сирай · Сираи, Ёсио · Сирай · Сирай Ёсио · Сирай Йосио · Сирай, Ёсио · Сирай, Йосио
Born Nov 23, 1923
Died Dec 26, 2003
Country 🇯🇵 Japan
Stance Orthodox
Debut Nov 26, 1943
Career 1943–1955
Rounds boxed 432
KO share 43%
Born in Tokyo, Japan
Titles WBA flyweight · 1952–1954
Boxerbook rating 1752 ± 319 · inactive since May 1955Why here › Confirmed bouts 8 of 61
Career record Record
49-8-4, 21 KOs · 1943–1955
Last result L
For NBA and The Ring flyweight titles KO 5/15 · Korakuen Stadium, Korakuen Baseball Stadium, 🇯🇵
The record 61 bouts, 1943–1955, newest first. Records under each bout are both boxers going in.
Bouts by source: Wikipedia (ja) · 61, English Wikipedia · 58, Wikipedia (ru) · 1
L
For NBA and The Ring flyweight titles KO 5/15 · Korakuen Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 49-7-4 · Pérez 25-0-1
L
Lost NBA and The Ring flyweight titles UD 15/15 · Korakuen Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 49-6-4 · Pérez 23-0-1
W
Takashi Seno
KO 4/8 · Japan
Shirai 48-6-4 · Seno —
W
PTS 10/10 · Estadio Luna Park, Buenos Aires, 🇦🇷
Shirai 47-6-4 · Barenghi —
D
PTS 10/10 · Estadio Luna Park, Buenos Aires, 🇦🇷
Shirai 47-6-3 · Pérez 23-0-0
W
Leo Espinosa
Retained NBA and The Ring flyweight titles SD 15/15 · Korakuen Baseball Stadium, 🇯🇵
Shirai 46-6-3 · Espinosa —
W
Masaru Kaneko
RTD 8/10 · Osaka, 🇯🇵
Shirai 45-6-3 · Kaneko —
W
Takashi Senoo
KO 5
Shirai 44-6-3 · Senoo —
W
Retained NBA and The Ring flyweight titles UD 15/15 · Korakuen Baseball Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 43-6-3 · Allen 62-10-1
L
Leo Espinosa
RTD 7/10 · Osaka Stadium, Osaka, 🇯🇵
Shirai 43-5-3 · Espinosa —
W
Vic Herman
TKO 10/10 · Korakuen Baseball Stadium, 🇯🇵
Shirai 42-5-3 · Herman —
W
Tanny Campo
Retained NBA and The Ring flyweight titles UD 15/15 · Korakuen Baseball Stadium, 🇯🇵
Shirai 41-5-3 · Campo —
W
Mario Macias
UD 10/10 · Japan
Shirai 40-5-3 · Macias —
W
Retained NBA and The Ring flyweight titles UD 15/15 · Korakuen Baseball Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 39-5-3 · Marino 57-14-3
W
Roy Higa
UD 10/10 · Korakuen Baseball Stadium, 🇯🇵
Shirai 38-5-3 · Higa —
W
Won NBA and The Ring flyweight titles UD 15/15 · Korakuen Baseball Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 37-5-3 · Marino 57-13-3
W
Kyoichi Muto
RTD 6/8 · Japan
Shirai 36-5-3 · Muto —
W
Retained Japan bantamweight title UD 10/10 · Japan
Shirai 35-5-3 · Horiguchi —
W
TKO 7/10 · Honolulu Stadium, Honolulu
Shirai 34-5-3 · Marino 57-12-3
W
Takahisa Horiguchi
Retained Japan flyweight title KO 6/10 · Japan
Shirai 33-5-3 · Horiguchi —
Show all 61 bouts W
Hidemasa Nagashima
Won Japan bantamweight title PTS 10/10 · Japan
Shirai 32-5-3 · Nagashima —
L
SD 10/10 · Korakuen Baseball Stadium, Korakuen Baseball Stadium, 🇯🇵
Shirai 32-4-3 · Marino 53-12-1
L
Hidemasa Nagashima
Lost Japan bantamweight title DQ 8/10 · Japan
Shirai 32-3-3 · Nagashima —
W
Yukio Takahashi
DQ 7/10 · Japan
Shirai 31-3-3 · Takahashi —
W
Takashi Seno
Retained Japan bantamweight title PTS 10/10 · Japan
Shirai 30-3-3 · Seno —
W
Katsumi Kobayashi
KO 2/10 · Japan
Shirai 29-3-3 · Kobayashi —
W
Takeshi Nomura
KO 5
Shirai 28-3-3 · Nomura —
W
Hideo Kijima
Retained Japan flyweight title KO 2/10 · Japan
Shirai 27-3-3 · Kijima —
W
Retained Japan bantamweight title PTS 10/10 · Japan
Shirai 26-3-3 · Hanada —
W
Yoshiaki Nario
PTS 8/8 · Japan
Shirai 25-3-3 · Nario —
W
Mamoru Murata
KO 2
Shirai 24-3-3 · Murata —
W
Won Japan bantamweight title UD 10/10 · Japan
Shirai 23-3-3 · Horiguchi —
W
Kyoichi Muto
KO 3/8 · Japan
Shirai 22-3-3 · Muto —
W
Retained Japan flyweight title PTS 10/10 · Japan
Shirai 21-3-3 · Kushida —
W
Eijiro Yajima
PTS 10/10 · Japan
Shirai 20-3-3 · Yajima —
W
Tomoyoshi Yanagida
KO 2/10 · Japan
Shirai 19-3-3 · Yanagida —
W
Won Japan flyweight title KO 5/10 · Japan
Shirai 18-3-3 · Hanada —
W
SD 8/8 · Japan
Shirai 17-3-3 · Kushida —
W
Eijiro Yajima
UD 8/8 · Japan
Shirai 16-3-3 · Yajima —
W
Nobuyuki Ishimori
KO 2/8 · Japan
Shirai 15-3-3 · Ishimori —
W
Kiyoshi Nishimura
PTS 8/8 · Japan
Shirai 14-3-3 · Nishimura —
D
Kunimatsu Suda
PTS 6/6 · Japan
Shirai 14-3-2 · Suda —
D
Eijiro Yajima
PTS 8/8 · Japan
Shirai 14-3-1 · Yajima —
W
Sadaji Wada
PTS 8/8 · Japan
Shirai 13-3-1 · Wada —
W
Kazumi Ueda
PTS 6/6 · Fuji, 🇯🇵
Shirai 12-3-1 · Ueda —
W
Kazumi Ueda
PTS 6/6 · Japan
Shirai 11-3-1 · Ueda —
W
Michiyosi Koizumi
KO 2/6 · Japan
Shirai 10-3-1 · Koizumi —
D
Takeshi Makino
PTS 8/8 · Japan
Shirai 10-3-0 · Makino —
L
Eijiro Yajima
PTS 8/8 · Japan
Shirai 10-2-0 · Yajima —
L
PTS 8/8 · Japan
Shirai 10-1-0 · Hanada —
W
Toshimitsu Kushihashi
PTS 6/6 · Japan
Shirai 9-1-0 · Kushihashi —
W
Kazumi Ueda
PTS 6/6 · Japan
Shirai 8-1-0 · Ueda —
L
KO 5/8 · Japan
Shirai 8-0-0 · Kushida —
W
Sakae Suzuki
KO 1/6 · Japan
Shirai 7-0-0 · Suzuki —
W
Sadasuke Aoki
PTS 4/4 · Japan
Shirai 6-0-0 · Aoki —
W
Shigeo Tanaka
PTS 4/4 · Japan
Shirai 5-0-0 · Tanaka —
W
Makoto Yamada
KO 1/4 · Japan
Shirai 4-0-0 · Yamada —
W
Masao Ito
KO 1/4 · Japan
Shirai 3-0-0 · Ito —
W
Tomisaburo Oura
PTS 4/4 · Japan
Shirai 2-0-0 · Oura —
W
Saichi Kubota
KO 1/4 · Japan
Shirai 1-0-0 · Kubota —
W
Jumpo Umiyama
KO 1/4 · Japan
Shirai 0-0-0 · Umiyama —
Ratings now Not in any current ranking.
World titles
Facts
What is Yoshio Shirai's record? Yoshio Shirai's professional record is 49-8-4 with 21 knockouts.
Who did Yoshio Shirai fight last? Yoshio Shirai last fought Pascual Pérez on May 30, 1955 and lost by KO in round 5 of 15.
Which world titles has Yoshio Shirai held? Yoshio Shirai has held 1 world title reign: WBA flyweight (1952–1954). Sources Boxerbook ID 9037 · permanent link boxerbook.com/id/9037 . Wikidata (CC0), English Wikipedia (CC BY-SA), photo from Wikimedia Commons. Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.
