The core philosophy in the NFL is that teams have to build through the draft. While that's the proper approach, great teams also need to hit on a few key additions in free agency too. The Philadelphia Eagles changed their fortunes last offseason.

It's a weak class of free agent tight ends. The position is important, as teams look for their matchup cheat codes like Trey McBride or Brock Bowers.

NFL free agency kicked off Monday with the legal negotiating window, so we stacked the top 100 players available. Who is No. 1? How many QBs make the list?

We polled a group of writers from around SB Nation to gather consensus rankings about the players. We will remove players from the list as they re-sign with their current teams all the way up to the opening of free agency in March.

NFL free agency has arrived, with teams taking advantage of the legal tampering period before the start of the new league year March 12. Deals abound, so let's grade the more notable non-quarterback agreements so far.