The Cougars and Wildcats played in front of 2,251 fans at Lower Soccer Field, the largest in school history.
Jessica Nelson's goal in the 36th minute ended Arizona's (9-4-1, 3-3) three-game losing streak as they defeated the 16th-ranked Washington State Cougars (11-3, 4-2) by a score of 1-0.
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Cougars have five teams with perfect single-year scores in 2017-18.
WSU to host a pair of camps in late May.
The Senior Recognition Luncheon was held Friday at Bohler Athletic Complex.