NFL Owners Change Rules on Kickoffs and Penalties - The Atlantic
Former Seahawks DB Richard Sherman slams NFL's concussion policy
Week 20 Injury Report : Gronk's Concussion, Richard Sherman's Comments & Sendejo's Quick Turnaround — Heads 'N Tales Podcast
How NFL players are thinking about life after football - ESPN
Richard Sherman Explains Why He Won't See 'Concussion': “I See a Concussion Movie Every Sunday”
Richard Sherman, NFL All-Pro, Joins Advisory Board — Oxeia Biopharmaceuticals
Richard Sherman's Interceptions Lead Seattle Over 49ers - The New York Times
49ers star Richard Sherman throws a flag on NFL's concussion policy
Seahawks' Richard Sherman: 'We really don't have reason to trust the NFL'
Richard Sherman's Story — Oxeia Biopharmaceuticals
Richard Sherman on concussions and safety in the NFL - Sports Illustrated