Faisal Aden, the reigning Pac-12 player of the week for Washington State, left the game with what appeared to be a serious left knee injury in the first half.

TUCSON, Ariz. — Kyle Fogg scored 20 points and Solomon Hill added 17, leading a shower of Arizona three-pointers that buried visiting Washington State 85-61 on Thursday night.

Faisal Aden, the reigning Pac-12 player of the week after scoring 33 against Stanford and 24 against California — both Washington State victories — left the game with what appeared to be a serious left knee injury with 4:02 left in the first half.

Aden was hurt on a drive to the basket, falling to the court in pain after being stripped of the ball by Arizona’s Jordin Mayes. He sprawled out in obvious pain as Arizona took the ball downcourt before a timeout eventually was called. Aden could not put any weight on the leg as he was helped from the court.

Coach Ken Bone said Aden had a sprained knee and possibly an injury to his MCL.

“I hate to see anybody get injured, especially when it’s a game-ending injury that is possibly more than one game,” Bone said. “With the way Arizona was playing, I’m not sure he would have made a difference.”

Brock Motum scored 18 for Washington State (11-9, 3-5).

Washington State’s Marcus Capers said Aden’s injury “dampened our sprits somewhat.”

“Other players have their own mindset, as we should as competitors,” Capers said. “I think when something like this happens, people will step up and realize they have to do this or that to make up for it.”

Fogg, 4 of 6 on threes, scored 18 in the first half as the Wildcats (14-7, 5-3) built a 42-27 lead.

Overall, Arizona made a season-best 15 of 26 from behind the arc.

Washington State is 0-4 away from home in the conference this season, 2-8 overall. Arizona improved to 10-2 at McKale Center this season and 54-16 in the series with WSU.