6 rounds

Bob
Jefferson
VS
Rocky
Marciano

Marciano · TKO 2/6

Oct 4, 1948 · Auditorium, Providence, 🇺🇸

Jefferson going in—

Marciano going in9-0-0

Confirmation✓ one source

MethodTKO

Round2 of 6 · 2:30

Sources

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

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