Richard Sherman says NFL players know physical risks, once hid a concussion to keep playing
The Arm: Inside the Billion-Dollar Mystery of the Most Valuable Commodity in Sports by Jeff Passan
Seahawks vs. 49ers: National media toasting Richard Sherman, roasting Colin Kaepernick
FMIA: The 22 Most Influential NFL People This Season Includes Sean McVay, Trey Lance and an VP - NBC Sports
Richard Sherman rant: Anger, brashness a part of football
American football - Wikipedia
NFL star Richard Sherman arrested on domestic violence charge
Richard Sherman Football Workout - 2018 San Francisco 49ers NFL Season
POSSE Magazine - Fall 2012 by Oklahoma State - Issuu
49ers News: Richard Sherman has been battling personal issues “for a few months” - Niners Nation
Seahawks' Richard Sherman played 2nd half of season with knee injury
NFL's Richard Sherman: It's 'time to address' mental health