He has guest-starred on such shows as "Night Court", "Kung Fu", "Starsky and Hutch", "Kojak", "The Rockford Files", "Baretta", and "Sanford and Son"; he also played a role in "". Mosley made a memorable appearance in the 1973 film "The Mack" as the militant brother of the main character Goldie. He appeared in other blaxploitation films including "Hit Man" (1972), "Sweet Jesus, Preacherman" (1973), "Darktown Strutters" (1975), and "The River Niger" (1976). His other film credits include "McQ" (1974) with John Wayne, "The Greatest" (1977, as Sonny Liston), "Semi-Tough" (1977), "Heart Condition" (1990) and "Pentathlon" (1994). He also starred in the television series "Hangin' With Mr. Cooper" (1992-1993) as Coach Ricketts in a recurring role with comedian/actor Mark Curry, and in the film "A Thin Line Between Love & Hate" (1996) with Martin Lawrence, Lynn Whitfield, and Bobby Brown. He also appeared as a celebrity guest on "The $25,000 Pyramid" for a week's worth of shows in July 1983, July 1984, in June 1985.