20 rounds

Jack
Twin Sullivan
VS
Philadelphia
Jack O'Brien

Draw · PTS 20/20

Jul 4, 1905 · Dawson City, Yukon Territory, 🇨🇦

Sullivan going in0-4-1

O'Brien going in129-8-19

Confirmation✓ one source

MethodPTS

Round20 of 20

Sources

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

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