Guardian Caps: NFL requires use of helmet cover at training camps to reduce head injuries
NFL says Guardian Caps reduced concussions by over 50%
Coverage of the NFL in Guardian Caps
Guardian Caps Debut at Training Camps Across the NFL
NFL Mandated Guardian Caps: Controversial Change - Sports Illustrated Seattle Seahawks News, Analysis and More
NFL says positions wearing Guardian Caps saw 52% decrease in concussions
Matthew Stafford enters concussion protocol before week 10 matchup with Arizona Cardinals - Revenge of the Birds
Guardian Caps data show more than 50% concussion drop among groups who wore them - Newsday
Steelers QB Kenny Pickett turning to new helmet technology to help avoid further concussions in 2023, National Sports
Concussions in NFL are up again after two seasons of declines - The Washington Post