10 rounds

Isaac
Marin
VS
Alfonso
Frazer

Frazer · TKO 8/10

Oct 30, 1971 · Gimnasio Nacional, San Jose, 🇨🇷

Marin going in0-0-0

Frazer going in25-4-1

Confirmation✓ one source

MethodTKO

Round8 of 10

Sources

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

✓