Prior to earning his PGA Tour card for the 2016 season, Stegmaier spent multiple years on mini-tours and the
Web.com Tour (2013−15). Stegmaier's best PGA Tour finish was a tie for 2nd place at the 2015
Shriners Hospitals for Children Open. At that tournament, he was the second and third round leader. In July 2023, Stegmaier won the 89th
Connecticut Open. He finished 15-under-par to win by three strokes at Shuttle Meadow Country Club in Kensington, Connecticut. ==Professional wins==