(Corvallis, OR)  --  Oregon State will be looking to improve its tournament chances when it hosts Arizona tonight.  The Beavers are 17-and-9  and 9-and-5 in the Pac-12.  With a crowded field to get in, the Beavers need as many wins as they can get to get a NCAA bid. They will host Arizona Sunday in its home finale  The Beavers lost to both Arizona schools on the road in January.