One NFL player has died on the field. His widow watched Damar Hamlin's collapse in horror.
NFL Tragedies of 2022: The Saddest and Most Shocking Deaths
Pro football's troubled history of on-field medical emergencies
See a statement from the family of Dick Butkus after his death
Mural of Northeast High player, who died after collapsing on football field, brings awareness to rare disease
Life and death on the gridiron
Steve McNair, Biography, Statistics, Death, & Facts
Jordan McNair's Family Reaches $3.5 Million Settlement With University of Maryland - The New York Times
Dave Duerson's Ferocious Life and Tragic Death - Men's Journal
College Football History - Blood on the Gridiron: The True Story of the 1905 'Death Harvest' - Corn Nation
Death and Texas Full American Football Drama Movie
Life and death on the gridiron
Bills safety Damar Hamlin eases back into practice 5 months since near-death experience
Chuck Hughes' death on field 50 years ago was an NFL tragedy