5 Most Dangerous Positions in American Football
Opinion Should You Boycott the N.F.L.? - The New York Times
Knee injuries worry NFL players more than concussions
How to save football: a solution to brain injuries and concussions - Dear Sports Fan
College football - Wikipedia
Injuries make the NFL a brutal sport. But the violence is partly why fans love it
The World's Most Dangerous Game of Football, Calcio Storico
Mexico fan violence: At least 22 injured and matches suspended after fighting at top-flight match, Football News
Soccer Game in France Delayed Due to Crowd Fights, Multiple Injuries
NFL Defense Rankings: Cowboys, Seahawks, and Ravens Surge in Week 5
The Forgotten History of Head Injuries in Sports
Paul Gardner: Why is football ignoring the problem of goalkeeper violence?