TWU lost 1-0 to West Texas A&M and now has dropped four straight games after winning four of its first five Lone Star Conference contests.
West Texas A&M scored seven minutes into the game when Haley Girard got her first goal of the season.
The Pioneers (5-7-2, 4-5-1 Lone Star) held conference-leading scorer Leslie Briggs scoreless on just one shot. She came into the game averaging 6.46 shots per game and has 13 goals.
The Pioneers return to action at 2 p.m. Sunday when they host Eastern New Mexico.