Explainer: What happened to Buffalo Bills safety Damar Hamlin?
Bills' Damar Hamlin in critical condition after heart stopped
Damar Hamlin critical: Fans hold vigil outside hospital for Buffalo Bills safety
Damar Hamlin: Buffalo Bills player in critical condition in hospital after cardiac arrest on field during game against Cincinnati Bengals, NFL News
Damar Hamlin Breathing on His Own, Speaking to Buffalo Bills Teammates
Bills' Hamlin in Critical Condition After Collapse on Field - Bloomberg
Bills' Damar Hamlin suffered cardiac arrest vs. Bengals. Here is what happened
Ryan O'Halloran: Sensible decision made to postpone game after Bills safety Damar Hamlin's injury
Trauma team: Damar Hamlin able to respond; after waking, asked: Who won the game?