Morgan Weaver and Elyse Bennett scored in the opening 20 minutes of action to lead WSU past LMU, 2-1, Sunday in Pullman.
For the first time in nearly three years the Cougars fell at home in non-conference play.
The 13 Cougars host Michigan and LMU in the Cougar Cup.
The Coug midfielder earned the first Pac-12 Offensive Player of the Week award for WSU.
Averie Collins needed just :09 seconds in overtime to end a thriller at Gonzaga.
The Cougars head to Spokane to renew their rivalry with Gonzaga Thursday night.