CORVALLIS, Ore. — Nick Madrigal went 3-for-5 with four RBIs and national No. 3 seed Oregon State defeated Northwestern State 9-3 on Friday night at the NCAA Corvallis Regional. The Beavers (45-10-1) advance to face LSU on Saturday in the double-elimination regional. Oregon State started Bryce Fehmel (10-1) rather than Pac-12 pitcher of the year Luke Heimlich.