NFL: Damar Hamlin cleared to play again after cardiac arrest, American Football News

The 25-year-old Buffalo Bills safety collapsed during a game in January and required CPR on the field.

Damar Hamlin returns to NFL stage after cardiac arrest, The Courier

Damar Hamlin 'will play professional football again,' NFL players union doctor says

Damar Hamlin discharged after spending more than a week hospitalized due to a cardiac arrest

Damar Hamlin Plays in First NFL Game Since His Cardiac Arrest

Buffalo Bills star Damar Hamlin's on-field collapse puts spotlight on cardiac arrest in young people - Good Morning America

Damar Hamlin returns to practice months since accident

Damar Hamlin: Buffalo Bills safety plays first NFL game since cardiac arrest on the pitch - BBC Sport

What is commotio cordis, which NFL player Damar Hamlin says stopped his heart?

Damar Hamlin medically cleared to resume playing, Bills GM says

Bills' Damar Hamlin's cardiac arrest adds to NFL injury reality