The new normal' - Why fighting in the NHL has dropped to historic lows - ESPN
Are NFL Players Underpaid? - HowTheyPlay
NFL Season Kickoff Ratings Down Double Digits From 2019 Opener – Deadline
The NFL's stranglehold on US audiences will lead to more injuries like Damar Hamlin's - Vox
Those sagging TV ratings have NFL owners' attention
The Decline Of Football Is Real And It's Accelerating
Chart: NFL Viewership Has Taken a Hit
A future without football: Head injuries put NFL, game at risk - Sports Illustrated
Can NFL Football Survive Brain-Injury Epidemic?