Brandon Ashley, Rondae Hollis-Jefferson and Kaleb Tarczewski each scored 17 points to lead
T.J. McConnell added 14 points for Arizona (22-3, 10-2 in
"We had a tremendous first half," Arizona Coach Sean Miller said. "We did what we needed to do in the second half. We weren't going to beat them by 30 in the second half."
Dexter Kernich-Drew scored 20 points and DaVonte Lacy scored 18 for Washington State (11-14, 5-8), which was coming off a win over
"Our first half defensive performance says a lot about our defense," Miller said.
Ashley and Tarczewski "together had one of their best nights," Miller said. "They really set the tone."
Hollis-Jefferson, meanwhile, added 10 rebounds and made 8 of 9 from the field.
McConnell said it was difficult to maintain intensity when the Wildcats were up by 30 points.
"They started hitting shots in the second half that they did not make in the first," McConnell said. "We were giving them open shots."