The Cougars close out non-conference play against Pepperdine in Hawaii Sunday afternoon.
Shayna Whieldon scored in the 41st minute as the Cougs downed Hawai'i, 1-0, in Honolulu.
WSU heads to Honolulu for two to close out non-conference play.
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.