8 rounds

Ryota
Otsuka
VS
Shōta
Kawaguchi

Otsuka · UD 8/8

Updated Oct 14, 2026 · Sources: Wikipedia (ja), Japan Boxing Commission — 試合報告書

Feb 6, 2012 · Korakuen Hall, 🇯🇵

Otsuka going in—

Kawaguchi going in12-3-1

Confirmationofficial ★

MethodUD

Round8 of 8

Event

DateFeb 6, 2012

VenueKorakuen Hall

Country🇯🇵 Japan

Wikipedia (ja)
side b · observed 2026-10-12
ja.wikipedia.org/wiki/川口勝太

✓

Japan Boxing Commission — 試合報告書
side neutral · observed 2026-10-14
jbc.or.jp/result/#no=2012020601

✓