12 rounds

Leo
Florian Hauck
VS
Frank
Klaus

Klaus · PTS 12/12

Feb 14, 1911 · Armory A.A., Boston, 🇺🇸

Hauck going in48-9-15

Klaus going in48-12-11

Confirmation✓✓ two sources

MethodPTS

Round12 of 12

Sources

English Wikipedia
side a · observed 2026-10-11
en.wikipedia.org/wiki/Leo_Florian_Hauck

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

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