Explainer: What happened to Buffalo Bills safety Damar Hamlin?
Buffalo Bills player Damar Hamlin suffered cardiac arrest on field, team says
Damar Hamlin's condition shows improvement, Buffalo Bills say - BBC News
NFL Cancels Buffalo Bills vs. Cincinnati Bengals Game As Damar Hamlin Remains in Critical Condition
Bills-Bengals will not be played following Damar Hamlin injury
Pittsburgh native Damar Hamlin in critical condition after collapse on field
NFL provides update on Cincinnati Bengals vs Buffalo Bills rescheduled game after Damar Hamlin cardiac arrest
Damar Hamlin: Buffalo Bills player in critical condition but showing 'signs of improvement' as support offered to Tee Higgins, NFL News
Bills' remarkably improved Damar Hamlin asks: 'Did we win?' - Los Angeles Times