How many concussions is too many? Neurologists answer your questions. - The Washington Post
Sam Shields' Last Big Hit - Last Word on Pro Football
The Football Player's Brain That Sparked the NFL's Concussion Crisis - The Atlantic
CTE cases in soccer players raise fresh questions about safety of heading the ball
Preventing Concussion in Athletes and Young Children
Yankees 1B Rizzo on IL due to post-concussion syndrome from pickoff play collision in May - NBC Sports
NHL insider: Concussion effects have altered the life of former Wild player Cam Stewart
World Cup-winner Steve Thompson among 169 ex-players in concussion lawsuit against rugby authorities
Why Mitch Morse, returning from a concussion, means so much to Bills offense against Bengals
Second Impact Syndrome (SIS): What Athletes, Coaches and Trainers Need to Know - Mid-Atlantic Concussion Alliance