Richard Sherman rips NFL concussion protocol, says it's 'an absolute joke' : r/nfl
Super Bowl's 'good vs evil' storyline on Richard Sherman and Peyton Manning not all black and white - Oliver Holt - Mirror Online
League of Denial: The NFL, Concussions and the Battle for Truth by Mark Fainaru-Wada
Richard Sherman Gets Real About Concussions in the NFL
The NFL's injury reporting problem - Pride Of Detroit
What Richard Sherman had to say before Seahawks' Week 15 game vs. 49ers
Richard Sherman is the most interesting person in football
Richard Sherman Explains Why He Won't See 'Concussion': “I See a Concussion Movie Every Sunday”
The concussion conundrum – Winnipeg Free Press
Under the blue tent: How the NFL's concussion protocol went from a 'joke' to the gold standard
NFL execs' preseason worries for all 32 teams revisited: Eagles proved 'em wrong, 49ers not so much & Browns — wow - The Athletic
Jared Goff keeps healthy approach as Rams prepare for Browns - Los Angeles Times
Former Seahawks DB Richard Sherman slams NFL's concussion policy
Updates from Shanahan on Sherman playing time, injuries, more