Guardian cap' to prevent head injuries mandated for practices, CFL says
NFL players wear Guardian Caps to reduce head trauma during training camp
NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
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NFL report: concussions dropped 50 PERCENT when players wore new 'Guardian Caps' over the summer
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NFL players wear Guardian Caps to reduce head trauma during training camp
NFL: Guardian Cap debuts during minicamps in effort to reduce avoidable head contact