6 rounds

John
Riggins
VS
Thad
Spencer

Spencer · PTS 6/6

May 28, 1962 · San Francisco Civic Auditorium, San Francisco, California

Riggins going in—

Spencer going in10-1-0

Confirmation✓ one source

MethodPTS

Round6 of 6

Sources

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

✓