10 rounds

Jim
Jeffords
VS
Philadelphia
Jack O'Brien

O'Brien · PTS 10/10

Mar 9, 1903 · Masonic Hall, Pittsburgh, 🇺🇸

Jeffords going in—

O'Brien going in91-5-15

Confirmation✓ one source

MethodPTS

Round10 of 10

Sources

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

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