The Vikings fell 74-63 to Weatherford.
Grayson overcame an eight point deficit and cut it to just one point in the second half, but a 9-0 Weatherford run late in the half allowed them to take control of the game.
The Vikings are still battling for a spot in the Region V Tournament despite the loss. 
Caleb Alcineus led the way with 24 points, Judah Pena finished with 16.