4 rounds

Yukihiro
Kawaguchi
VS
Kazumasa
Kobayashi

Kobayashi · UD 4

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

Sep 3, 2006 · Sakaide Sati Hall, 🇯🇵

Kawaguchi going in—

Kobayashi going in—

Confirmationofficial ★

MethodUD

Roundscheduled 4

Event

DateSep 3, 2006

VenueSakaide Sati Hall

Country🇯🇵 Japan

Japan Boxing Commission — 試合報告書
side neutral · observed 2026-10-14
jbc.or.jp/result/#no=2006090301

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