Sigg will make his U.S. Open debut after finishing fourth on the points list from the three-event Korn Ferry Tour Series. Sigg closed the season with a runner-up finish to Brandon Wu in the Korn Ferry Tour Championship presented by United Leasing and Finance. It was his best finish in 16 events in 2020, a year that included two other top-10 finishes. Sigg graduated from the University of Georgia in 2017, where he served as team captain during his senior season and earned third-team All-America honors. Prior to 2020, he spent two seasons on the Mackenzie Tour-Canada, earning his Korn Ferry Tour card for 2020 by finishing ninth on the circuit's Order of Merit.