Pendrith qualified for his third U.S. Open via final qualifying at Springfield (Ohio) Country Club, posting 10-under-par 130. Both of Pendrith's professional victories have come on the Mackenzie Tour-PGA Tour Canada in 2019. He played his college golf at Kent State with PGA Tour winner and fellow Canadian Corey Conners. When he lost in the Round of 64 at the 2014 U.S. Amateur at the Atlanta Athletic Club, Pendrith picked up Conners' bag and helped him reach the championship match, where he fell to Gunn Yang. Pendrith also was an outstanding basetball player in high school. As an amateur, he won the 2013 Porter Cup and Mid-American Conference Championship, and the 2014 Monroe Invitational.