TUCSON — Oregon State ended a generation of futility in the desert with a stunning 63-55 victory over Arizona on Saturday, the Beavers' first win in Tucson in 27 years.
It was one of the biggest wins yet for second-year Oregon State coach Craig Robinson, brother of first lady Michelle Obama.
The loss knocked the Wildcats (13-12, 7-6 Pac-10) out of a second-place tie with Arizona State in the Pac-10.
Roeland Schaftenaar led Oregon State (11-13, 5-7) with 14 points, while Calvin Haynes added 13 and Seth Tarver 11.
Jamelle Horne led Arizona with 15 points and 14 rebounds. Derrick Williams added 13 points and Kevin Parrom 12. The Wildcats' Nic Wise made 1 of 11 shots, 1 of 8 3-pointers, and managed five points.
Overall, Arizona made 4 of 23 3s in its second Pac-10 home loss of the season.
The last Oregon State victory at Arizona came on Jan. 27, 1983, when the Ralph Miller-coached Beavers beat the Wildcats 72-54. Lute Olson became the Arizona coach one season later.
Oregon State led 35-25 after Tarver's jumper 4½ minutes into the second half, when the Wildcats finally mounted a rally.
Wise started it with a 3-pointer, his only field goal of the game, in a 12-2 run that tied the score at 37-37 on Parrom's layup with 10:07 to play, and the raucous, standing-room-only crowd at McKale Center was roaring.
But Tarver responded with a short jumper, and the gritty Beavers went on a 13-3 outburst to restore the 10-point lead, 50-40, on Jared Cunningham's inside basket with 5:18 to go.
The mistake-prone Wildcats cut the lead to 56-51 when Horne dunked a rebound with 39 seconds left but could get no closer.
Oregon State never trailed after taking a 19-18 lead and led 26-20 at the break.