Reiter is the second player to qualify for the U.S. Open from the Bermuda Dunes Country Club local qualifier in California (Brady Calkins). The University of San Diego standout shot 7-under 135 on the Ocean Course at The Olympic Club in the 36-hole final qualifier to garner one of the five spots. The Palm Desert, Calif., native transferred to USD from the University of Southern California. Reiter was the runner-up in the 2020 California Amateur at Torrey Pines, losing to Joey Vrzich, of Pepperdine, in the 36-hole final. He was a sponsor's invite to the 2018 CareerBuilder Challenge on the PGA Tour. Competed in the 2017 U.S. Junior Amateur. This year for USD, he posted two top-five finishes in 13 events.