(Undated) -- The number-one ranked Oregon State Beavers will host the Washington Huskies in Pac-12 play beginning this weekend in Corvallis. The first game of the three-game is tonight. The Beavers are 18-and-1. Oregon will play Cal in a three-game Pac-12 series beginning tonight. The Ducks were swept by Arizona State to begin their conference play last weekend and are 12-and-7 overall. Portland will host San Francisco in a WCC weekend series, which starts tonight.