8 rounds

Modesto
Concepcion
VS
Samuel
Serrano

Serrano · PTS 8/8

Updated Oct 11, 2026 · Sources: English Wikipedia

Oct 31, 1970 · San Juan, 🇵🇷

Concepcion going in—

Serrano going in8-1-0

Confirmation✓ one source

MethodPTS

Round8 of 8

Sources

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

✓