Funky-Looking Guardian Caps Rejected by NFL for Regulation Play
NFL says positions wearing Guardian Caps saw 52% decrease in
Concussions among players who wore Guardian Caps over summer
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NFL expands rule against misuse of helmet; Guardian Caps required
NFL players wear Guardian Caps to reduce head trauma during
NFL Mandate of Guardian Caps - 2023 Season >> Guardian Sports
Could Guardian Caps be used during NFL games for player safety
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NFL exec suggests Guardian Caps worn to protect players during