4 rounds

Ren
Kakimoto
VS
Kai
Watanabe

Watanabe · UD 4/4

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

Jul 17, 2021 · Hachioji City Fujimori Gymnasium, 🇯🇵

Kakimoto going in—

Watanabe going in2-0-0

Confirmationofficial ★

MethodUD

Round4 of 4

Event

DateJul 17, 2021

VenueHachioji City Fujimori Gymnasium

Country🇯🇵 Japan

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

✓

Japan Boxing Commission — 試合報告書
side neutral · observed 2026-10-14
jbc.or.jp/result/#no=2021071701

✓