(Corvallis, OR)  --  The Oregon State baseball team will host the Corvallis Regional this weekend as the Number One national seed in the NCAA tournament.  The Beavers will play UNLV Friday in a regional that also includes UC Irvine and North Dakota State.  The Oregon Ducks will head to Nashville for a regional hosted by Vanderbilt, and will play Clemson Friday morning.  Xavier is the fourth team in the regional lineup.