Badgers wearing Guardian Caps to limit concussions during practice
Concussion concerns weigh on parents of football players, Local News
NFL players wear Guardian Caps to reduce head trauma during training camp
NFL players wear Guardian Caps to reduce head trauma during training camp
He was just a baby': CTE robbed footy player of his brain and then his life, Concussion in sport
NFL hopes to reduce head injuries with helmet experiment
Robert Saleh dislikes the new Guardian Caps: And he has a point
NFL hopes to reduce head injuries with helmet experiment
EXPLAINER: NFL using helmet caps for player safety, research
Guardian Caps show promise in tackling concussion concerns in football
Complaints begin regarding Guardian Caps, despite one important hidden benefit - NBC Sports
Guardian Cap Results: “Exceeded Our Expectations”
NFL fans react to new guardian cap rules
Conclusive evidence' repetitive head impacts can cause brain disease, Concussion in sport