(Undated)  --  In college baseball, number-12 Oregon State hosts USC Thursday to begin a three-game series that closes out the regular season.  The Beavers are 20-and-6 in the Pac 12 and 35-16-and-1 overall.  Oregon fell 3-1 to UC Riverside yesterday.  The Ducks are 10-and-17 in the Pac 12 and 27-and-27 overall.