The Denver Broncos have placed safety Caden Sterns on the physically unable to perform (PUP) list, according to NFL Network’s Ian Rapoport. Sterns tore his patella tendon last year in the opening game and missed the remainder of the season. Prior to that, the defensive back totaled four interceptions over his first two NFL seasons. He appeared in 15 games as a rookie to finish with 28 total tackles, five passes defended and a pair of picks. However, Sterns has played in only six games since then as injuries have taken a toll on him early in his pro career. He also missed 12 games in 2023 durin…