8 rounds

Bryan
Robertaña
VS
Kai
Chiba

Robertaña · TKO 4/8

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

Jan 20, 2018 · Korakuen Hall, 🇯🇵

Robertaña going in—

Chiba going in7-0-0

Confirmationofficial ★

MethodTKO

Round4 of 8 · 0:26

Event

DateJan 20, 2018

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=2018012001

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