It is often said that the NFL is a copycat league. The sentiment is understandable because a good idea in many walks of life — once out in the open — often gets absorbed quickly into the everyday workings of the industry and eventually becomes incorporated into the norm.
There are not many things more out in the open than football, and while the league and its inhabitants can be stubborn, there are not enough degrees of separation between coaches and players for ideas to remain concentrated for too long.
[Editor's Note: Subscribe to PFF ELITE today to gain access to PFF’s Premium Stats and new Player Grades experience in addition to the 2020 NFL Draft Guide, 2020 Fantasy Rookie Scouting Report, PFF Greenline, all of PFF’s premium article content and more.