(Corvallis, OR)  --  Oregon State's NCAA at-large tournament chances are probably nil after a 78-76 loss to Arizona at Gill Coliseum. The Wildcats made a rebound bucket at the buzzer to knock off the Beavers.  Oregon State dropped to 17-and-10 overall and 9-and-6 in the Pac-12.  The Beavers will play their home finale Sunday against Arizona State.