Braun was 7 of 13 from the floor, with six 3-pointers. The Antelopes (14-2) made 10 of 25 from beyond the arc. Grandy Glaze scored 17 points with 12 rebounds, and Dominic Magee added 14 points. Grand Canyon dominated the boards, 45-27.
Grand Canyon made an 11-point run early - including a pair of 3s by Braun - and led 45-28 at the break. Braun's 3-pointer with 8:19 left made it 69-51, and the lead reached 20 with 6:34 to go on a Magee 3-pointer.
Rio Grande Valley didn't make a basket over the final 3:24.