LINCOLN, Neb. (AP) - Nebraska defensive coordinator John Papuchis is expecting a sharper performance when the Cornhuskers host Southern Mississippi this week.
     The 18th-ranked Huskers won their opener 37-34 over Wyoming on Saturday.
     But there is definite room for improvement after they allowed 602 yards to a team that lost eight of 12 games in 2012.
     It was the second-most yards the Huskers had allowed in a win. The most was 610 yards to Ball State in 2007.
     Nebraska faces a second straight spread offense this week in Southern Mississippi, which lost its opener 22-15 to Texas State in Todd Monken's first game as head coach.
     The Golden Eagles will come to Lincoln on a 13-game losing streak, longest in the Football Bowl Subdivision.