CORVALIS, Ore. — West Virginia lefthander Jackson Wolf yielded only five hits over seven innings against the defending national champions.

But three of those left the yard, and No. 6 Oregon State clinched the weekend series with a 4-2 win Saturday.

Beau Phillip homered twice and Adley Rutschman added a  solo shot for the Beavers (10-0), who will go for the sweep Sunday.

Phillip’s two-run blast in the bottom of the fourth put Oregon State ahead 3-2. It came  after Wolfe walked Rutschman on four pitches to open the inning.

TJ Lake ripped a two-run double for West Virginia (5-5) in the top of the fourth, but the Mountaineers were 0-for-10 otherwise with runners in scoring position.

In a 91-pitch outing, Wolfe (2-1) was charged with four runs, all earned, while striking out three and walking one.

Oregon State’s  Bryce Fehmel (2-0) scattered four hits over six innings and improved his career record to 28-5.

Christian Chamberlain earned his first save with two spotless innings.