NFL helmet lower rule: Explanation of new regulations - Sports Illustrated
NFL on CBS - The NFL implemented a "one-helmet rule" back in 2013 for player safety. | Facebook
Helmet-to-Helmet Hits in N.F.L. Haven't Diminished, but Penalty Flags Have - The New York Times
Jaguars, rest of NFL must adjust to new helmet rule
Helmet Rule Change: NFL's Next Step Toward Player Safety
The NFL Breaks the One-Helmet Rule – Green Gridiron, Inc.
What you need to know about the NFL's new helmet rule - The Boston Globe
Nfl 1 Helmet Rule Top Sellers, SAVE 52%.
/cdn.vox-cdn.com/uploads/chorus_asset/file/19610685/577677804.jpg.jpg "NFL nearing end to one-helmet rule? - The Falcoholic")
NFL nearing end to one-helmet rule? - The Falcoholic
Report: NFL Changes Lowering-of-Helmet Rule After Having Trouble Fining Players | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Explaining Antonio Brown's helmet issue: What are the NFL's rules, Raiders' options, AB's contract? | Sporting News
NFL helmet rule: Players shouldn't panic about penalties
N.F.L. Adopts Helmet Rule and Alters Tuck Rule - The New York Times
With Eye on Concussions, NFL Adopts New Rule on Helmet Hits | FRONTLINE
NFL to adopt targeting rule for lowering head to initiate contact
NFL Rules Analyst Believes Refs Missed Helmet-To-Helmet Penalty On Chiefs During Crucial Browns Turnover - BroBible
The NFL is scrapping its stupid alternate-helmet rule so here are nine glorious throwback lids we need to see pronto | This is the Loop | GolfDigest.com
NFL's ridiculous helmet rule is a bad joke
With the one-shell rule gone, here are all the alternate and throwback helmets NFL teams have unveiled so far - Footballscoop
Helmet safety rule - a loophole for teams losing at the end? - Tomahawk Nation
/cdn.vox-cdn.com/uploads/chorus_asset/file/12539063/usa_today_11098824.jpg "The NFL's new helmet rule, explained in a 3-minute read - SBNation.com")
The NFL's new helmet rule, explained in a 3-minute read - SBNation.com
NFL Safety Tech, Part One: The Data Behind the Helmet Rule
Browns: If league relaxes helmet rule, team should go with this design
Helmet off" rule needs a minor tweaking - ProFootballTalk
