Reid Koenen added 12 points and Vonn Jones scored 10 for the Bobcats (3-3), who made 11 of their first 12 shots, raced to a 20-2 lead and were ahead 26-16 midway through the first half. UC Riverside closed within five points early in the second half, but couldn't come any closer.
DeSean Murray, who averaged 20.2 points as a sophomore at Presbyterian, will transfer to Auburn to play for coach Bruce Pearl.
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.