 In 1975, Kelley was drafted by the New Orleans Jazz in the first round of the 1975 NBA draft and by the Memphis Sounds in the second round of the 1975 ABA Draft.In the NBA Kelley played for the New Orleans Jazz/Utah Jazz (1975–79 and 1983–85), New Jersey Nets (1979–80), Phoenix Suns (1980–82), Denver Nuggets (1982–83) and Sacramento Kings (1985–86).He helped the Suns win the 1980–81 NBA Pacific Division and the Jazz win the 1983–84 NBA Midwest Division.