Baker provided 26 points and VanVleet had 18 with eight assists and five steals as the Shockers (27-0, 14-0 MVC) remained one of two unbeaten teams in the nation along with No. 1 Syracuse.
Cleanthony Early totaled 13 points and seven rebounds. Tekele Cotton chipped in 12 points for Wichita State, which next meets Loyola-Chicago Wednesday.
The Purple Aces (11-16, 4-10) were paced by Egidijus Mockevicius' 19 points and 10 rebounds.