Pro football's troubled history of on-field medical emergencies
When Bills' Damar Hamlin collapsed, the NFL stopped and the nation watched - The Washington Post
Patriots-Packers preseason game ended early after injury to Isaiah Bolden
What Is Medical Care Like on an NFL Sideline?, News, Scores, Highlights, Stats, and Rumors
Damar Hamlin injury update: The NFL response shows the league isn't built for this.
Buccaneers quarterback John Wolford carted off field
NFL player left the football field to enter the medical field
DK Metcalf, Lamar Jackson and other NFL players who couldn't hold their bathroom breaks until halftime
NFL modifies concussion protocol after review of Tagovailoa injury
Damar Hamlin: Buffalo Bills player in critical condition in hospital after cardiac arrest on field during game against Cincinnati Bengals, NFL News
NFL Player Damar Hamlin Goes Into Cardiac Arrest