10 rounds

Steve
Mamakos
VS
Izzy
Jannazzo

Jannazzo · UD 10/10

Apr 10, 1940 · Riverside Stadium, Washington, 🇺🇸

Mamakos going in—

Jannazzo going in33-20-13

Confirmation✓ one source

MethodUD

Round10 of 10

Sources

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

✓