For IBO heavyweight title · 12 rounds

Lionel
Butler
VS
Brian
Nielsen

Nielsen · KO 1/12

Nov 6, 1998 · K.B. Hallen, Copenhagen

Butler going in27-15-1

Nielsen going in7-0-0

Confirmation✓ one source

MethodKO

Round1 of 12 · 2:37

TitleFor IBO heavyweight title

Sources

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

✓