MADISON, Wis. — The initial results of wide receiver Kyle Jefferson's medical tests are "very encouraging," Wisconsin coach Bret Bielema said.

Jefferson was hospitalized with potential head and neck injuries after he was taken off the field in an ambulance in the second quarter of today's game against Minnesota.

Bielema said Jefferson was knocked unconscious on the field but was able to talk, squeeze his hands and move his feet afterward.

"All positive things have come back so far," Bielema said. "Our thoughts and prayers are with Kyle and his family."

Jefferson caught a pass from Dustin Sherer in Minnesota territory and was wrapped up by cornerback Traye Simmons, then was hit hard by linebacker Simoni Lawrence and fumbled the ball. A television replay showed that Lawrence's shoulder connected with Jefferson's helmet.

Jefferson lay motionless on the ground for several minutes as he was surrounded by trainers and teammates. He was lifted onto a stretcher and loaded into an ambulance about eight minutes after he hit the ground, with his arms strapped to his sides.

Jefferson, a sophomore, came into Saturday's game fourth on the team with 13 catches for 179 yards.

Wisconsin beat Minnesota 35-32.