New on SI: What Actually Happens During the NFL’s ‘Dead Period’? More Than You Think

The supplemental draft (multiple players have a chance to be picked this year), officials go to work on the new helmet rule, the deadline for signing franchise-tagged players to new deals, and a nervous holiday weekend for coaches and front offices highlight this time of year. Plus, mailbag questions on who has the deepest roster, the myth of redshirting highly drafted QBs, and the problem with Good Will Hunting