2 Dec 1978
Marvin Johnson beats Mate Parlov via knockout 10/15
Light Heavyweight (175 lb)
Marvin Johnson becomes the WBC Light Heavyweight world champion
22 Apr 1979
Matthew Saad Muhammad beats Marvin Johnson via knockout 8/15
30 Nov 1979
Marvin Johnson beats Victor Galindez via knockout 11/15
Marvin Johnson becomes the WBA Light Heavyweight world champion
31 Mar 1980
Eddie Mustafa Muhammad beats Marvin Johnson via knockout 11/15
9 Feb 1986
Marvin Johnson beats Leslie Stewart via knockout 7/15
20 Sep 1986
Marvin Johnson beats Jean Marie Emebe via knockout 13/15
23 May 1987
Leslie Stewart beats Marvin Johnson via corner retirement 8/12