10 rounds

Ernie
Cruz
VS
Chucho
Castillo

Castillo · KO 5/10

Jun 29, 1969 · Plaza de Toros México, Mexico City, 🇲🇽

Cruz going in—

Castillo going in36-7-1

Confirmation✓ one source

MethodKO

Round5 of 10

Sources

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

✓