Michael Nunn vs Sumbu Kalambay · Bout 42015

Retained IBF middleweight title · 12 rounds

Nunn · KO 1/12

Mar 25, 1989 · Las Vegas Hilton, Winchester, 🇺🇸

Nunn going in32-0-0

Kalambay going in46-3-1

Confirmation✓✓ two sources

MethodKO

Round1 of 12 · 1:28

TitleRetained IBF middleweight title; Won The Ring middleweight title

Sources

English Wikipedia
side a · observed 2026-10-11
en.wikipedia.org/wiki/Michael_Nunn

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English Wikipedia
side b · observed 2026-10-11
en.wikipedia.org/wiki/Sumbu_Kalambay

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