10 rounds

Jim
Tremble
VS
Philadelphia
Jack O'Brien

O'Brien · KO 9/10

Oct 16, 1906 · Naud Junction Pavilion, Los Angeles, 🇺🇸

Tremble going in—

O'Brien going in134-8-21

Confirmation✓ one source

MethodKO

Round9 of 10

Sources

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

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