FILE - In this Dec. 28, 2011, file photo, Wisconsin running back Montee Ball speaks at a news conference in Los Angeles for the Rose Bowl NCAA college football game. Five men attacked the star running back near campus early Wednesday morning, Aug.1 , 2012,  inflicting head injuries serious enough to send him to the hospital, authorities said. Ball, a Heisman Trophy finalist last season as a junior, was taken to a hospital with head injuries, police said. (AP Photo/Jason Redmond, File)

Photo by: Jason Redmond

FILE - In this Dec. 28, 2011, file photo, Wisconsin running back Montee Ball speaks at a news conference in Los Angeles for the Rose Bowl NCAA college football game. Five men attacked the star running back near campus early Wednesday morning, Aug.1 , 2012, inflicting head injuries serious enough to send him to the hospital, authorities said. Ball, a Heisman Trophy finalist last season as a junior, was taken to a hospital with head injuries, police said. (AP Photo/Jason Redmond, File)