6 rounds

Lander
Clark
VS
J.
B. Williamson

Williamson · TKO 6/6

May 4, 1980 · Seattle Center Coliseum, Seattle

Clark going in—

Williamson going in5-0-0

Confirmation✓ one source

MethodTKO

Round6 of 6

Sources

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

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