Buffalo Bills wide receiver Keon Coleman is undergoing tests on his wrist Monday, The Athletic reported. The 21-year-old rookie sustained the injury late in the fourth quarter of Sunday's 30-27 win over Miami. Replays showed Dolphins safety Jordan Poyer's helmet smashing into Coleman's right wrist or forearm on a deep pass attempt from Josh Allen. Poyer was flagged for unnecessary roughness on the play and Coleman left the game. Buffalo's drive ended with a game-winning 61-yard field goal by Tyler Bass. Coleman had just one catch for 21 yards on Sunday. He ranks second on the Bills (7-2) with 417 yards on 22 catches and shares the team lead with three touchdown receptions.