Azinger announced his decision on Tuesday, two days before the start of the senior major. Tournament officials did not know why he was withdrawing.
Joey Sindelar (back), Andy Bean (family illness), Kentucky native Russ Cochran (wrist) and Blaine McCallister (family illness) also dropped out of the tournament. McCallister had replaced Fred Couples, who withdrew on Monday because of back problems.
Taking the spots of those five players were Matt Seitz, Trevor Dodds and PGA club professionals Dave Kendall, Mark Keating and Mark Johnson.