Players, coaches react to mandatory use of Guardian Caps
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp
Why are NFL players wearing padding on helmets at training camp?
Camp Report: Falcons VP of player personnel Kyle Smith talks 'churning the roster'
Eagles players on Guardian Caps: 'We look a little goofy,' but all for safety
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NFL executive hints that Guardian Caps could eventually be worn in games, along with position-specific helmets
Jason Kelce puts bubblewrap on his helmet, mocking the NFL's dumb new Guardian Cap rules in training camp
Eagles Training Camp Practice Notes
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NFL commissioner Roger Goodell believes football will become safer
NFL hopes to reduce head injuries with helmet experiment