Campbell was play-by-play announcer for the Philadelphia Warriors from their debut in 1946 until their move to San Francisco in 1962, calling Wilt Chamberlain's 100-point game. He was also play-by-play announcer for the Philadelphia Eagles from 1952 to 1966, Philadelphia Phillies from 1963 to 1970, and Philadelphia 76ers from 1972 to 1981.