10 rounds

Modesto
Concepcion
VS
Bobby
Chacon

Chacon · TKO 10/10

Feb 17, 1976 · Civic Auditorium, San Jose, 🇺🇸

Concepcion going in—

Chacon going in28-3-0

Confirmation✓ one source

MethodTKO

Round10 of 10 · 2:59

Sources

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

✓