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.
Florida State's student government has passed a resolution discouraging Seminoles fans from wearing Native American headdresses at games.
The second annual Gavitt Tipoff Games, eight games between members of the Big East and Big Ten to be played Nov. 14-18, will feature Villanova at Purdue in the opener.
Michael Lewis is leaving his assistant coaching job at Butler to take the same position at Nebraska under Tim Miles.