The Grizzlies will host conference opponent Phoenix. Tuesday's meeting is the first this season between the teams.
The Phoenix Suns (27-29) plays the fourth of a five-game road-trip and second of back-to-back games at the Toronto Raptors (17-39) on Sunday.
BYU shot 55.4% from the field and hit 14 of 31 3-pointers (45.2%), with guard Richie Saunders leading the way with 23 points.