CHAMPAIGN, Ill. (AP) – Illinois coaches and players have talked about how thin their roster is for much of the season.  The Illini are going to face quite a physical disadvantage Saturday night when they take on No. 25 Wisconsin and its big offensive line.  The Badgers average 321 pounds on the o-line. That size has helped Melvin Gordon become the top back this season in the Big Ten. He averages 145 yards a game. Not far behind him is teammate James White at just over 95 a game.  Illinois linebacker Jonathan Brown says Illini defenders can’t focus too much on the man across from them if they don’t want to be overwhelmed by the Badgers’ size.