Riley signed with the Philadelphia Eagles as an undrafted free agent following the 2020 NFL draft on April 26, 2020.[2] He was waived during final roster cuts on September 3, 2020,[3] and re-signed to the team's practice squad three days later.[4] He was elevated to the active roster on October 10 and 17 for the team's weeks 5 and 6 games against the Pittsburgh Steelers and Baltimore Ravens, and reverted to the practice squad following each game.[5][6] On December 16, 2020, Riley was promoted to the active roster.[7]
On August 31, 2021, Riley was waived by the Eagles and re-signed to the practice squad the next day.[8][9]
New York Jets
On November 9, 2021, Riley was signed by the New York Jets off the Eagles practice squad making 7 starts.[10] On August 23, 2022, he was released.[11]
Pittsburgh Steelers
On August 24, 2022, Riley was claimed off waivers by the Steelers.[12] He was waived on August 30 and signed to the practice squad the next day.[13][14] He was elevated on October 8, 2022, to the active/inactive roster from the Steeler's practice squad, and then reverted to the practice squad after the game. He was promoted to the active roster on December 24, 2022.[15]
On November 20, 2023, Riley was placed on injured reserve.[16] He was activated on December 22.[17]
New York Giants
On May 30, 2024, Riley signed with the New York Giants.[18] He was placed on injured reserve on August 15.[19]
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