He was signed by the Philadelphia Eagles as an undrafted free agent in 2020 following his college football career at Army.

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.

[7] On August 31, 2021, Riley was waived by the Eagles and re-signed to the practice squad the next day.

[8][9] On November 9, 2021, Riley was signed by the New York Jets off the Eagles practice squad making 7 starts.