NFL's new use of helmet rule remains work in progress
NFL's New Helmet Hits Rule May Be Extremely Difficult to Officiate
Sources -- AB says no football without old helmet - ESPN
NFL passes rule that prohibits lowering of helmet
Florio] NFL *considering* relaxing one helmet rule that prevents
List of all the throwback uniforms you won't see under new NFL
NFL's new, stricter helmet rule noble in spirit, futile in
The NFL is scrapping its stupid alternate-helmet rule so here are
NFL allowing players to wear lightly tinted Oakley helmet visors
The NFL's new helmet rule has been called 51 times already this