NFL players can no longer wear exposed "hoodies" over their shoulder pads, and assistant coaches are now expressly prohibited from entering the field of play, following a series of adjustments that will appear in the 2016 edition of the NFL rule book. Both were in response to specific issues that arose during the 2015 season.
The final version of the book has not be published, but a league source confirmed the changes to ESPN's Ed Werder. Former NFL vice president of officiating Mike Pereira, now a FOX Sports analyst, first revealed the changes on Twitter.
The "hoodie" rule was deemed necessary after receiver James Jones debuted the style last season while playing for the Green Bay Packers.