Roman Silva added 14 points and 6-of-7 shooting as the team went 32 of 65 for its highest-scoring game against a D-I opponent this season.
Marcus Tsohonis led the Huskies (3-13, 2-9) with 22 points off the bench. Erik Stevenson added 14 points and Jamal Bey 13.
Lucas opened the game with a 3-pointer and Thompson had a four-point play on the next possession and the Beavers were off. A basket at the 13:26 by Alatishe made it 21-6.
Washington scored 11 straight, the first nine on 3-pointers, two by Tsohonis, to pull the Huskies within four but late in the half Reichle made five free throws and a Lucas 3-pointer capped a 10-0 run to recapture the 15-point advantage.