A career-high 34 points from junior Brock Motum was not enough to power the Cougs past Arizona State as WSU fell, 71-67.
Motum led all scorers, making 13 of 19 shots from the floor, as well as nailing all six of his free throw attempts. Motum also had a team-high of eight rebounds.
The Cougars offense relied heavily on Motum against the Sun Devils as senior Faisal Aden missed the game due to a strained knee he suffered in the loss to Arizona on Thursday.
Arizona State (7-14 overall, 3-6 Pac-12) started strong from the perimeter, knocking down its first four 3-point attempts en route to a 22-15 lead with 12 minutes left.
The Sun Devils'hot shooting continued, but they simply could not protect the ball as Washington State's defense forced eight turnovers in the first 15 minutes of play.
The Cougs used an 11-0 run to get back into the game with 3:50 left. WSU (11-10, 3-6) eventually took the lead, 32-31, on back-to-back 3-pointers by freshman Davonte Lacy.
The game went back-and-forth until halftime, as the Sun Devils held onto a 37-36 lead. Brock Motum led the Cougs in the first half, as he scored 14 points and pulled down six boards.
Lacy added 11 points while point guard Reggie Moore had six assists during the first half.
Arizona State shot almost 54 percent from the floor in the first half, led by junior Carrick Felix, who had 13 points in the first 20 minutes, and finished with 20 to lead ASU.
The Sun Devils spread the ball around, and piled up 12 assists on 15 made field goals. Nonetheless, the Cougs'defense did force 10 ASU turnovers in the first half.
For much of the second half, WSU kept the deficit in single digits, but the Cougars could not make up the gap due to turnovers and missed opportunities. The Cougars committed 12 turnovers in the second half after committing just six in the first.
WSU did have a chance late in the game with 1:54 remaining after Motum hit a 3 from the top of the key to cut the Sun Devils' lead to 64-60.
ASU's Chris Colvin sealed the deal on the ensuing possession, however, after he missed a jumper, grabbed his own rebound and sunk his next attempt. WSU will return home next week as they host USC on Thursday at 7:05.