By CHRIS JENKINS
AP Sports Writer
Already off to an unsettled start to the season, Wisconsin now must prepare for a trip to Nebraska with running back Montee Ball's status up in the air.
Ball left Saturday's game against UTEP with a head injury, and coach Bret Bielema said Monday that he was optimistic but not certain that Ball will be able to practice this week as the Badgers (3-1) prepare for their Big Ten opener against the 22nd-ranked Cornhuskers (3-1).
Bielema said he was "not overly concerned" that Ball would have to sit out this week, even though it's the star running back's second head injury in less than two months.