10 rounds

George
Coplen
VS
Jack
Dempsey

Dempsey · KO 6/10

Nov 19, 1915 · Lyric Opera House, Cripple Creek, Colorado, 🇺🇸

Coplen going in—

Dempsey going in10-1-4

Confirmation✓ one source

MethodKO

Round6 of 10

Sources

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

✓