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.