Freshman Cade Cunningham scored 18 points and recorded a key block that led to the game-winning basket Tuesday as Oklahoma State upset No. 6 Kansas 75-70 at Stillwater, Okla.With 40 seconds remaining and the score tied, Kansas’ Marcus Garrett slashed to the basket looking to take the lead. Cunningham blocked the shot, controlled the rebound and started a fastbreak that culminated with a run-out by Rondel Walker, who converted a three-point play for a 73-70 Oklahoma State advantage.Ochai Agbaji missed two 3-point attempts on the last Kansas possession before Bryce Williams stole an inbounds pass and raced the length of the floor for a game-ending dunk, the last of 37 fastbreak points for the Cowboys (9-3, 3-3 Big 12).The Jayhawks (10-3, 4-2) had roared back from a 16-point deficit, using a 21-2 blitz to go up 70-67 with 1:20 remaining on a jumper in the lane from David McCormack, whose double-double included season bests of 24 points and 12 rebounds.No. 7 Michigan 77, No. 9 Wisconsin 54The Wolverines overwhelmed the Badgers with a 36-3 outburst spanning the two halves and rolled to an easy win at Ann Arbor, Mich.Mike Smith compiled 16 points and six assists while Franz Wagner supplied 15 points and 10 rebounds for Michigan (11-0, 6-0 Big Ten), which maintained sole possession of first place in the conference. Michigan’s lead topped out at 40 points midway through the second half.D’Mitrik Trice’s 20 points led Wisconsin (10-3, 4-2), which went scoreless in the last 6:19 of the first half as Michigan extended a three-point advantage to a 40-23 halftime lead. Then early in the second half, the Wolverines reeled off 22 consecutive points while the Badgers went scoreless for more than seven minutes.