NFL teams must be down to the league-mandated 53 players on their rosters come Saturday, September 5th, at 4:00 PM ET. We have known that for a long time. While there are still a few days between now and then, we have seen the Dallas Cowboys be a bit proactive in trimming some players. They, along with the rest of the league, started with 80 as opposed to the usual 90 which meant that they needed to move on from 27 players. At the end of Wednesday they had said goodbye to seven and on Thursday afternoon they added an eighth.