15 rounds

Jim
Jeffords
VS
Philadelphia
Jack O'Brien

O'Brien · KO 3/15

Oct 21, 1904 · Eureka A.C., Baltimore, 🇺🇸

Jeffords going in—

O'Brien going in120-7-19

Confirmation✓ one source

MethodKO

Round3 of 15

Sources

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

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