Michigan was once up 10 points in the first half.
Their halftime lead is one, 33-32.
The Wolverines, which were shooting 62.5 percent midway through the half scored once (a 3-pointer from Zak Irvin with 1:29 left) in the final five minutes.
A long 3-pointer from Bronson Koenig made it a 1-point game with less than a second left.
Derrick Walton leads the Wolverines with 12 points, all on 3-pointers. Irvin has nine, while D.J. Wilson and Mo Wagner have five each.
Each Michigan starter has at least two points.
Koenig leads the Badgers with 13 points.