10 rounds

Jackie
Byrd
VS
Henry
Armstrong

Armstrong · KO 4/10

Feb 29, 1944 · Coliseum, Des Moines

Byrd going in—

Armstrong going in138-20-8

Confirmation✓ one source

MethodKO

Round4 of 10 · 1:18

Sources

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

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