The Bengals (2-11, 1/3 Big Sky) used a 15-0 run near the end of the first half to take command. They hit 7 of 15 3-point baskets to open the second half and eventually took a 57-36 lead with 14 minutes remaining in the game.
Idaho State won for the first time since Nov. 29, ending a six-game losing streak.
Northern Colorado tied the game at 19-19 after Unruh's basket with 8:17 left in the first half, but he was unable to convert the traditional three-point play. Idaho State then went on a 15-0 run with five players contributing points.
Former Kentucky guard Ed Davender, the only Wildcat with at least 1,500 points and 400 assists, has died. He was 49.
Guard Naz Mitrou-Long, whose 2015-16 season ended in December due to hip problems, has been granted a hardship waiver for the coming season, Iowa State said.
As the Sooners look to life without superstar Buddy Hield and his sidekicks, it's clear their unseasoned players will need to grow up fast.