How Emmitt Smith, Joe Horn, others altered NFL rule book
 

The structure of football in the NFL dates back more than 100 years. The rest of the league's 79-page rule book? Much of it is the result of outlawed innovation bubbled up from competitive-minded teams and players.

The latest manifestation of that practice occurred last week, when it was revealed the NFL has banned the New England Patriots' preference of using numberless jerseys during spring practices. That news arrived a few days after the league addressed a series of 2015 issues with rule clarifications, most notably prohibiting exposed sweatshirt hoodies worn by free-agent receiver James Jones.

How Emmitt Smith, Joe Horn, Tom Brady and more altered NFL rule book - NFL Nation- ESPN

Re: How Emmitt Smith, Joe Horn, others altered NFL rule book
 

good read. Still hate the new definition of a horse collar.