Buffalo Bills player Damar Hamlin suffered cardiac arrest on field, team says
Bills safety Damar Hamlin in critical condition after collapse during game
Bills' Damar Hamlin in critical condition after heart stopped
Bills' Hamlin in Critical Condition After Collapse on Field - Bloomberg
Damar Hamlin: Buffalo Bills player in critical condition but showing 'signs of improvement' as support offered to Tee Higgins, NFL News
Buffalo-Cincinnati game suspended; Damar Hamlin in critical condition
Condolences pour in for Damar Hamlin, who's in critical condition after an NFL game – WABE
Damar Hamlin Showing Signs of Improvement After Collapse During NFL Game - WSJ
What is commotio cordis, which NFL player Damar Hamlin says stopped his heart?