Bryce Fehmel limited Louisiana State to two hits in eight innings, KJ Harrison hit the first College World Series grand slam at TD Ameritrade Park, and Oregon State beat Louisiana State 13-1 for its 23rd straight win Monday night.
The top-seeded Beavers (56-4), who matched the school-record win streak they set earlier this season, took control of Bracket 1. They don't play again until Friday, and need one more win to advance to next week's best-of-three finals.
LSU (49-18) had its 17-game win streak end with its most lopsided CWS loss since a 20-6 throttling by Cal State Fullerton in 1994. The
Starter Eric Walker (8-2) left the game in the third inning because of forearm tightness. Caleb Gilbert held the Beavers for a couple of innings, but they capitalized on a couple of LSU misplays to go up 3-0 in the fifth.
Harrison's slam made it 8-0 in the sixth.