UC Davis built an eight-point lead late in the first half, but Riverside's Malik Thames hit a 3-pointer with one second left to cut the lead to five, 29-24 at intermission. The Highlanders (10-11, 1-4 Big West) opened the second half on a 13-4 run to take a 37-33 lead four minutes into the period.
Jaylen Bland gave Riverside a 55-52 lead on his layup with 2:35 left in the game. Graham hit a 3-pointer and a free throw in the final minute to close out the game for Davis (7-10, 2-2).
Graham finished with 21 points and Fox 20 to lead the Aggies.