10 rounds

Ralph
Zannelli
VS
Henry
Armstrong

Armstrong · UD 10/10

Mar 24, 1944 · Boston Garden, Boston

Zannelli going in—

Armstrong going in141-20-8

Confirmation✓ one source

MethodUD

Round10 of 10

Sources

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

✓