Packers are using high-tech helmets in hopes of lowering concussions - The Athletic
SI] Former Packers DB Sam Shields Now Says He Regrets NFL Career : r/nfl
Ex-Packer Sam Shields REGRETS playing in NFL after concussions left his head 'all mushed together'
Packers Release CB Sam Shields
It's Been a Long Two Years
Sam Shields' two-year journey back to the NFL from concussion - Sports Illustrated
Former Packer Sam Shields still dealing with effects of concussions
Sam Shields sorely missed in Packers' secondary
Ex-Pro Bowl CB Sam Shields says concussions left his head 'all mushed up,' regrets NFL career