A 6'5" guard-forward from UCLA, Fields played in 4 seasons in the NBA from 1984 to 1988. He played for the Bucks and Los Angeles Clippers.
His best year as a pro came during the 1986–87 season when he split time with the Bucks and Clippers, appearing in 48 games and averaging 8.2 ppg. Fields also played parts of two seasons in the Continental Basketball Association with three teams.