The Cougars (4-7) were led by designated hitter Mason Cerrillo who went 3 for 4 with four RBI. Dugan Shirer had three hits and stole two bases. Catcher Stefan Van Horn hit a three-run home run, his team-leading third of the season.
Freshman starting pitcher Parker McFadden struck out three, walked two and allowed four runs, two earned in 4.1 innings.
Utah Valley (6-6) erased a 4-0 deficit with a four-run fifth and a 7-4 WSU lead with another four runs in the sixth before scoring twice in the 11th to take the win.
McFadden cruised through the first four innings before running into trouble in the fifth. A Cougar error started the damage, with McFadden allowing three straight hits that pushed across three runs.
The Wolverines scored twice in the 11th with a leadoff homer to left and added another run on a wild pitch. The Cougs trail in the four-game series with UVU 1-2, with the series finale set for Sunday at noon.