Branden Frazier added 16 points for the Rams, who snapped a 10-game losing streak and won at St. Bonaventure for the first time since Jan. 28, 2009.
Fordham (7-24, 3-13 Atlantic 10) trailed 41-35 at the break but opened the second half on a 20-5 run to go up 55-46 with 12:35 left. St. Bonaventure responded with a 17-4 run to jump back on top, 63-59, with 6:48 showing.
Jermaine Myers hit a 3-pointer on the Fordham's next possession, sparking 12 straight points for the Rams. Gaston scored seven during the spurt as Fordham led from there.
The Bonnies (14-15, 7-9) shot 46 percent (23 of 50) but hit 9 of 27 3-pointers.
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.