The Cosby Show (1984)

S1E20 Back to the Track, Jack

Cliff receives a call from his former college track coach, inviting him to participate in a charity race pitting Hillman against their long-time rivals, Norton College. Eager to relive his glory days, Heathcliff "Combustible Huxtable" begins training, only to discover that he has lost the speed and stamina of his youth.