Stretch-run stash players

Jordan Reed makes a great addition for the end of the season. Toni L. Sandys/The Washington Post via Getty Images

Not everyone on an NFL roster was there at the start of the season, and it's obviously the same with fantasy football rosters as well. Every week, NFL teams take an inventory of what they've got on their roster -- who's hurt, who's not playing well, etc. -- and compare that to the guys who are available "on the street."