8 rounds

Ryo
Matsubara
VS
Kai
Chiba

Chiba · TKO 5/8

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

Oct 7, 2017 · Korakuen Hall, 🇯🇵

Matsubara going in—

Chiba going in6-0-0

Confirmationofficial ★

MethodTKO

Round5 of 8 · 2:12

Event

DateOct 7, 2017

VenueKorakuen Hall

Country🇯🇵 Japan

Wikipedia (ja)
side b · observed 2026-10-12
ja.wikipedia.org/wiki/千葉開

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Japan Boxing Commission — 試合報告書
side neutral · observed 2026-10-14
jbc.or.jp/result/#no=2017100701

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