10 rounds

John
Lark
VS
William
Irwin

Irwin · KO 2/10

Jun 4, 1999 · The Blue Horizon, Philadelphia, 🇺🇸

Lark going in—

Irwin going in26-3-0

Confirmation✓ one source

MethodKO

Round2 of 10

Sources

English Wikipedia
side b · observed 2026-10-11
en.wikipedia.org/wiki/Billy_Irwin_(boxer)

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