6 rounds

Kato
Ali
VS
Billy
Costello

Costello · SD 6/6

Feb 13, 1980 · Westchester County Center, White Plains, 🇺🇸

Ali going in—

Costello going in6-0-0

Confirmation✓ one source

MethodSD

Round6 of 6

Sources

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

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