What sport did a star of 1976 blaxploitation film: "Dr. Black, Mr. Hyde" play professionally?
Dr. Black, Mr. Hyde: Dr. Black, Mr. Hyde is a 1976 blaxploitation horror film loosely inspired by the novella, "The Strange Case of Dr Jekyll and Mr Hyde" by Robert Louis Stevenson. Dr. Black, Mr. Hyde:  The film stars Bernie Casey and Rosalind Cash and was directed by William Crain, who had also directed the successful "Blacula" for American International Pictures in 1972. Bernie Casey: Bernard Terry Casey (June 8, 1939 – September 19, 2017) was an American actor, poet, and professional football player.
football