The Cougars are now 9-14 overall and 2-9 in the Pac-12. They'll face Cal on Wednesday and Stanford next Saturday, both in Pullman. Utah is 16-7 and 5-6.
Despite the loss, Shelton was a shining light for the Cougars, scoring 19 points and pulling down 10 rebounds for his seventh double-double of season. He also blocked a shot and dished two assists.
DaVonte Lacy was the Cougars' leading scorer, with 22 points on 7-of-15 shooting from the field, including three 3-pointers. The treys moved him into sole possession of eighth on WSU's career 3-point list with 155, passing Marcus Moore (2001-04).
Other than he and Shelton, the story was redundant for the Cougars on offense. They shot just 38.9 percent from the field to Utah's 53 percent. Notably, the Cougars were outscore 42-18 in the paint, and out-rebounded 36-29.
Six Utah players hit double figures, with Taylor Brandon setting the pace at 16 points.