University of Wisconsin outside linebacker Zack Baun appeared to injure his left foot on the first series of the Badgers' scrimmage Friday evening.
Baun left the field and returned with a walking boot on, but the severity of the injury remains unknown. The junior missed all of last season after tearing a ligament in the same foot during fall camp in August.
"You think of those things," UW coach Paul Chryst said. "And boy, I thought he was doing some really - he was feeling good, so hopefully it's not that."
Despite missing last season, Baun entered spring practice as a first-team player at outside linebacker along with Andrew Van Ginkel.