Monte Morris hit a game-winning shot with under nine seconds to play to give No. 4 Iowa State an 83-82 victory over rival Iowa.
The Cyclones (8-0) erased a 20-point deficit to shock the Hawkeyes (7-3) late. Morris finished with 20 points and nine assists.
Jameel McKay had 20 points and 12 rebounds while Matt Thomas hit six 3s off the bench to finish with 19 points.