There's a lot that's changed about the Redskins since we last saw them hit the field. They have a new coach, a new general manager, a new quarterback and, hopefully, a new team culture. 

But on the field, the most significant change will be the switch to a 3-4 defense. Defensive coordinator Jim Haslett believes in the 3-4, and that will require many Redskins to play different positions than they did last year. We'll chronicle all news related to this switch in this stream.