Joey Hauser had a career-high 24 points and grabbed 10 rebounds, leading No. 8 Michigan State to a 79-61 win over Western Michigan.
The Spartans seemed flat for a second straight game at home after beating No. 6 Duke with an inspired effort on the road.
They led the Broncos by just two points midway through the second half and trailed for six-plus minutes in the game.
Hauser made a career-high six 3-pointers.
He helped Michigan State pull away with a 19-6 run that was capped by his shot just inside the school's logo.