20 rounds

Montana
Dan Sullivan
VS
Frank
Klaus

Klaus · KO 3/20

Jun 15, 1911 · Piedmont Pavilion, Oakland, 🇺🇸

Sullivan going in—

Klaus going in52-12-11

Confirmation✓ one source

MethodKO

Round3 of 20

Sources

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

✓