Flyweight · Japan

Masafumi Ōkubo

Updated · Sources: Wikidata, Japan Boxing Commission — 試合報告書, English Wikipedia

Masafumi Ōkubo was a flyweight boxer from Japan, born Oct 14, 1980. Masafumi Ōkubo last fought Edgar Sosa on Nov 20, 2010 and lost by UD over 12 rounds.

Also: Масафуми Оокубо · 大久保雅史 · Оокубо, Масафуми
BornOct 14, 1980
Country🇯🇵 Japan
DebutJul 31, 2006
Career2006–2010
Rounds boxed112
Born inNatori, Japan
TitlesOPBF flyweight title 2009
Boxerbook rating1320 ± 279 · inactive since Nov 2010Why here ›
Confirmed bouts15 of 16 · 15 official

Career record

Record
No record compiled yet

Last result

L
Edgar Sosa 🇲🇽
For WBC International flyweight title
UD 12/12 · Arena Monterrey, Monterrey, 🇲🇽
2010-11-20 ›
✓ one source

The record

Known bouts: 16, 2006–2010

Record not yet compiled — only bouts reported from opponents' records are shown

Bouts by source: Japan Boxing Commission — 試合報告書 · 15, English Wikipedia · 2

L
Edgar Sosa 🇲🇽
For WBC International flyweight title
UD 12/12 · Arena Monterrey, Monterrey, 🇲🇽
Ōkubo — · Sosa 40-6-0
2010-11-20 ›
✓ one source
W
Motoki Matsunase
UD 8 · Korakuen Hall, 🇯🇵
2010-09-22 ›
official ★
W
Keita Yamaguchi
TKO 7/8 · Korakuen Hall, 🇯🇵
2010-07-17 ›
official ★
L
Rocky Fuentes 🇵🇭
For OPBF flyweight title
MD 12/12 · Korakuen Hall, Tokyo, 🇯🇵
Ōkubo — · Fuentes 22-6-2
2010-03-09 ›
official ★
W
Gontawat Sitsaithong
UD 6 · Saitama Super Arena, 🇯🇵
2009-11-29 ›
official ★
W
Yutch Carryboy
OPBF flyweight title
TKO 7/12 · Korakuen Hall, 🇯🇵
2009-05-02 ›
official ★
W
Jojo Baldon
OPBF flyweight title
UD 12 · Ryogoku Kokugikan, 🇯🇵
2008-12-23 ›
official ★
D
Yasuto Aritomi
OPBF flyweight title
TD 3/12 · Korakuen Hall, 🇯🇵
2008-08-16 ›
official ★
W
Jin-ki Jeong
Japanese flyweight title
UD 12 · Korakuen Hall, 🇯🇵
2008-04-14 ›
official ★
W
Yuchi Wuasampan
KO 4/8 · Korakuen Hall, 🇯🇵
2007-09-01 ›
official ★
W
Daotong Tirasak gym
KO 2/8 · Korakuen Hall, 🇯🇵
2007-07-17 ›
official ★
W
Wido Paes
UD 8 · Korakuen Hall, 🇯🇵
2007-05-22 ›
official ★
W
Takashi Morishima
UD 6 · Korakuen Hall, 🇯🇵
2007-04-07 ›
official ★
W
Yod Buangam Sor Tanapinyu
KO 5/6 · Korakuen Hall, 🇯🇵
2007-01-24 ›
official ★
L
Seiya Hirakawa
MD 4 · Korakuen Hall, 🇯🇵
2006-09-29 ›
official ★
W
Yoshiki Osawa
UD 4 · Korakuen Hall, 🇯🇵
2006-07-31 ›
official ★

Ratings now

Not in any current ranking.

World titles

No world title reigns recorded.

Facts

Who did Masafumi Ōkubo fight last?
Masafumi Ōkubo last fought Edgar Sosa on Nov 20, 2010 and lost by UD over 12 rounds.

Sources

Boxerbook ID 1299 · permanent link boxerbook.com/id/1299. Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.

Wikidata ↗