In the 1979 season, he umpired first base during Ken Forsch's no-hitter against the Atlanta Braves.
[4][5] When the strike was settled, Fields and the others were allowed to remain on the staff as long as their performance was satisfactory.
On November 15, 1981,[5] after the 1981 season, Fields was fired for "low performance ratings" and "failure to show improvement",[6] the first of the four replacements to leave (Harris was fired in 1985, Pallone technically resigned in 1988, and Brocklander retired in 1992).
Throughout his time in the major leagues, Fields faced ostracism from the union umpires.
At the same time he was also working on the side as a high school umpire, before pursuing officiating as a professional.