ANN ARBOR, Mich. (AP) - Nik Stauskas scored 13 of his 21 points in the second half, and Michigan remained unbeaten in Big Ten play with an 80-67 victory over Penn State on Tuesday night. The Wolverines (12-4, 4-0) led 47-45 when a 3-pointer by Stauskas started a 19-5 run that gave Michigan a comfortable advantage. Derrick Walton added 16 points for the Wolverines, and Glenn Robinson III scored 15. D.J. Newbill and Tim Frazier scored 17 points apiece for Penn State (9-9, 0-5), but those two backcourt standouts weren't enough against a balanced Michigan team. The Wolverines have won six straight, all without star big man Mitch McGary, who is out indefinitely with a back injury. Michigan and rival Michigan State are the Big Ten's only teams without a conference loss.