MANHATTAN, Kan. (AP) -- Rodney McGruder scored 22 points and Angel Rodriguez added 20 as No. 13 Kansas State knocked off Iowa State 79-70 to take sole possession of first place in the Big 12.
Korie Lucious led the Cyclones (16-7, 6-4) with 16 points and reserve Tyrus McGee had 15.
The Wildcats (19-4, 8-2) held a slim 33-32 lead at the break in a game that remained close most of the way.
After Ejim reversed Kansas State's halftime lead, McGruder scored on a slashing layup and drew a foul against Lucious. With three fouls, Lucious -- who led Iowa State with 10 points in the first half -- went to the bench and did not score again until only 1:33 remained in the game.
A bucket by Thomas Gipson gave Kansas State a 38-34 lead before Georges Niang and Will Clyburn each hit a bucket to give Iowa State a 39-38 lead.
An 8-0 spurt that included a 3 by Shane Southwell, free throws by Gipson and a 3 by Will Spradling put the Wildcats in front 46-39.
The breathing room did not last long.