What happened to Damar Hamlin?
Bills-Bengals Game Suspended After Damar Hamlin Collapses on Field
Damar Hamlin cleared to resume playing football after cardiac arrest last season
Damar Hamlin visits teammates for 1st time since injury: reports
Monday Night Football' Turns Scary After Buffalo Bills Player Suffers Cardiac Arrest on Field
Bills news: Damar Hamlin continues remarkable recovery, addresses teammates - Buffalo Rumblings
Hamlin injury underscores danger of competition. Just ask Reggie Brown. - Washington Times
Damar Hamlin updates: What we know about Bills' safety's condition
Full coverage: Bills' Damar Hamlin suffers cardiac arrest vs. Bengals - Los Angeles Times