It's quite easy. All you have to do is guess the Redskins RB who will have the most rushing yards this year.
Good luck! Especially with the Shanahanigans guaranteed to screw up this contest!
Here's the options....
Roy Helu
Tim Hightower
Evan Royster
Alfred Morris
Tristan Davis
Good luck!

And here's an article on the Shanahanigans.....
http://www.profootballfocus.com/blog/2012/02/06/fantasy-belichickery-and-shanahanigans/
Oh, and my pick is......Evan Royster
EDIT: Hightower and Davis were cut. Now it's a 3-man battle!