TUCSON — Jamelle Horne scored a career-high 22 points to lead Arizona to an 87-70 victory over No. 24 Washington on Sunday, the Huskies' worst loss of the season.
Washington (10-5, 1-3) lost 67-51 to Arizona State on Friday night, the first time the Huskies were swept on the Arizona trip since 2003.
Horne hit a career-high five 3-pointers in eight attempts for the Wildcats (8-8, 2-2).
Isaiah Thomas had 18 points for Washington, while freshman Abdul Gaddy scored a season-high 13.
Arizona limited Washington to 44.2 percent shooting from the field. The Wildcats shot 50 percent, including 47.1 percent (8 of 17) from 3-point range.
Horne was one of six Arizona players to score in double figures. Nic Wise and Kyle Fogg both had 14 points, freshman Lamont Jones had a season-high 13, Derrick Williams had 12 points and nine rebounds, and Kevin Parrom added 10 points.
Arizona's largest lead of the game was 77-58 with 3 minutes remaining.
It didn't look like it would be an easy game for Arizona moments into the second half. Down 37-27 after Wise hit a 3-pointer at the halftime buzzer, Washington hit three consecutive shots, including two 3-pointers, in the opening 90 seconds of the second half to get within two points.
Arizona went on a 6-0 run, extending its lead to 43-35 on a basket by Parrom.
Gaddy, a former Arizona recruit who committed to the program but decided to sign with Washington because of the indecision and eventual retirement of Hall of Fame coach Lute Olson, was booed by the crowd every time he touched the ball.
Arizona freshman forward Solomon Hill fouled out with 12:10 to play and had no points and three rebounds.
After a 78-76 loss to Washington State on Friday, Arizona coach Sean Miller criticized his team for being terrible on defense. It was much improved on Sunday. Washington started the game hitting just two of 11 shots and found itself down 15-6 in the first 10 minutes.
Arizona's biggest lead in the first half was 27-14 on Fogg's layup with 5:41 left.