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.
The NBA draft is Thursday night (7 ET, ESPN/WatchESPN), and trade talk is picking up. Chad Ford dishes his latest intel on how the draft will go and which teams will make deals.
Ben Simmons' versatile game bears a strong resemblance to Draymond Green.
Jemele Hill and Michael Smith discuss Tracy McGrady's comments on Ben Simmons' standoffish demeanor. Hill wonders if the "LeBron label" has impacted Simmons for the worse.