Damar Hamlin CPR on the field | Former NFL doctor explains A former NFL head team physician - Dr. David Chao - breaks down actions taken on the field after Damar Hamlin collapsed after a hit in the Buffalo Bills v. Bengals game. More on the developing story here: https://www.wgrz.com/article/sports/nfl/bills/bills-game-suspended-after-safety-damar-hamlin-taken-off-field-in-an-ambulance-buffalo-bills-mafia/71-cee83fb1-afdb-4258-8f69-cb8efb274fe2