Pendrith played primarily on the Canadian Tour from 2017 to 2019. He has little success in 2017 and 2018 but in 2019 he was runner-up in the Osprey Valley Open and then won the 1932byBateman Open and Mackenzie Investments Open to finish second in the Order of Merit and earn a place on the Korn Ferry Tour. Playing on the 2020 Korn Ferry Tour, Pendrith was runner-up in three consecutive tournaments in July and runner-up again in the Wichita Open in September. His performances on the Korn Ferry Tour earned him a place at the 2020 U.S. Open where he finished tied for 23rd place after a final round of 70.