Seeley and Vaughn also had six assists apiece and combined for seven steals as the Titans (11-8, 4-3 Big West) snapped a two-game losing streak. Sammy Yeager added 16 points and eight rebounds for Fullerton, and Alex Harris had 10 points.
The Aggies led by eight points early in the second half before Fullerton took the lead, 74-73, on Yeager's 3-pointer with 9 minutes left. Vaughn's three-point play with 7:46 remaining put the Titans up for good, 76-74.
Both teams shot the ball well. The Titans made 55 percent of their attempts, including 12 of 23 from beyond the arc, while UC Davis converted 51 percent.
Mike Brey is looking at former Notre Dame players to fill two assistant jobs that have opened up with the departures of Martin Ingelsby and Anthony Solomon.
Purdue's 2016-17 prospects got a jolt Wednesday when forward Caleb Swanigan announced he will return for his sophomore season.
Clemson's Jaron Blossomgame says he is withdrawing from the NBA draft and returning to school for a final season.