One of CBS' new hit series is getting another series regular for its sophomore season. According to The Hollywood Reporter, Keegan Michael Key has joined the cast of Gary Unmarried as a series regular.

Key will portray Clean, an old high school friend of Gary (Jay Mohr) and a once-promising baseball player who might have made it to the major leauges until a knee injury ruined his career. Gary and Clean will reconnect in the second season and fall back into their routine that switches off between friends and competitors.

Gary Unmarried's second season will premiere on September 23 on CBS.