Oregon fell 3-1 to visiting Washington State in a Pac-12 volleyball match Friday afternoon at the Matthew Knight Arena in Eugene. On Sunday, the Ducks lost to Washington, 3-0. On Wednesday, Oregon (9-9, 16-10) hosts USC, and on Friday, the Ducks end the regular season in Corvallis, 7 p.m., in Civil War match with Oregon State. Oregon State beat Washington 3-2 Friday in Corvallis. On Sunday, the Beavers made it a sweep with a 3-0 win over Washington State. OSU (11-7, 21-9) hosts UCLA Wednesday, 1 p.m., and Oregon Friday, 7 p.m.