Players confused by NFL crackdown on hard hits - The San Diego Union-Tribune
4 INTs _ out loud: Redskins' Hall speaks his mind - The San Diego Union- Tribune
Unprecedented Rate Of Improvement Stimulated In Helmet Industry, New Standard Set For 'Top-Performing' Helmet Models Worn By NFL Players
Cowboys CB Newman 1 of oldest players on roster - The San Diego Union- Tribune
New helmet design can deal with sports' twists and turns
Kansas City Chiefs mock draft roundup: January 26
NFL training camps: Guardian Cap players are wearing over helmets, why
EXPLAINER: NFL using helmet caps for player safety, research
Puffy, spongy Guardian Caps could help curb NFL head injuries - The Washington Post
NFL CMO Dr. Allen Sills explains importance of mandated guardian caps during training camp