10 rounds

Willie
Monroe
VS
Marvelous
Marvin Hagler

Monroe · UD 10/10

Mar 9, 1976 · Spectrum, Philadelphia, 🇺🇸

Monroe going in—

Hagler going in26-1-1

Confirmation✓ one source

MethodUD

Round10 of 10

Sources

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

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