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Guardian Caps Guardian Sports
With Eye on Concussions, NFL Adopts New Rule on Helmet Hits
Helmet Rule Will Change the NFL, But Only If the League Can Figure
Guardian Caps Guardian Sports
Helmet Rule Will Change the NFL, But Only If the League Can Figure
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With Eye on Concussions, NFL Adopts New Rule on Helmet Hits
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N.F.L. Adopts Helmet Rule and Alters Tuck Rule - The New York Times
Timeline Evolution of the Concussion