8 rounds

Hiroya
Yamamoto
VS
Ryūji
Hara

Hara · UD 8/8

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

Dec 30, 2016 · Ariake Coliseum, 🇯🇵

Yamamoto going in—

Hara going in20-2-0

Confirmationofficial ★

MethodUD

Round8 of 8

Event

DateDec 30, 2016

VenueAriake Coliseum

Country🇯🇵 Japan

✓

Japan Boxing Commission — 試合報告書
side neutral · observed 2026-10-14
jbc.or.jp/result/#no=2016123001

✓