He is the voice of the Seattle Mariners, College Basketball on Westwood One/Dial Global, and the voice of Sunday Night Football on Westwood One/Dial Global with James Lofton. Sims was a play-by-play voice for the United Football League on Versus. He hosts "Basketball and Beyond with Coach K". He was a sports anchor for WCBS-TV in New York City. Sims called college football and basketball games for ESPN and ESPN Plus. He was the preseason announcer for the Tampa Bay Buccaneers.