Oregon opened Pac-12 volleyball play Thursday with a 3-1 win over visiting Oregon State.  On Sunday, Oregon (1-0, 8-3) hosts Washington St. on Sunday, Sept. 23, noon, Matthew Knight Arena in Eugene.  Oregon State (0-1, 10-3) takes on Washington Sunday, 2 p.m., at Corvallis.  Both televised on the Pac-12 Networks.