Riley joined the Korn Ferry Tour in 2020, earning his first win at the Panama Championship in February. He added a second title at the TPC San Antonio Championship in July, finishing the combined 2020-21 Korn Ferry Tour season ninth on the points list to earn his PGA Tour card. While playing the Korn Ferry Tour, Riley was roommates with Will Zalatoris, who defeated him in the U.S. Junior Amateur final in 2014.
