Adreian Payne had 20 points and 14 rebounds, and No. 9 Michigan State cruised past Northwestern 85-70 on Thursday night to stay tied atop the Big Ten.
The Spartans (21-4, 10-2) are even in the standings with rival Michigan - and those two teams meet in Ann Arbor on Feb. 23.
Gary Harris added 14 points for Michigan State, rebounding a bit from a poor shooting performance in a loss to Wisconsin last weekend. The Spartans shot 53 percent from the field against a Northwestern team that came in with a sterling defensive reputation.
The Wildcats (12-13, 5-7) had not allowed 80 points in a game in over a month.
Michigan State was without point guard Keith Appling, who has been bothered by a wrist injury.