4 rounds

Dennis
Mancino
VS
J.
B. Williamson

Williamson · UD 4/4

Oct 27, 1979 · Sports Arena, Los Angeles

Mancino going in—

Williamson going in0-0-0

Confirmation✓ one source

MethodUD

Round4 of 4

NotesProfessional debut

Sources

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

✓