MADISON, Wis. (AP) – No. 12 Wisconsin opens the season at home Saturday against Northern Iowa.  All eyes are on Badgers running back Montee Ball, who was attacked and beaten up near campus a month ago, leaving him with a concussion that caused him to miss part of camp. Three men were arrested in connection with the incident this week.  Ball scored 39 touchdowns to tie Barry Sanders’ NCAA record last season.  Northern Iowa is ranked No. 7 in a preseason FCS coaches’ poll. The Panthers beat Iowa State in 2007 and nearly beat the Cyclones again last year, losing 20-19 after blowing a late lead. Northern Iowa lost 17-16 at Iowa in 2009 after having a pair of late field goal attempts blocked.