OMAHA, Neb. — The dominance Oregon State has shown all season was on full display Monday night.
Bryce Fehmel limited LSU to two hits in eight innings, KJ Harrison hit the first College World Series grand slam at TD Ameritrade Park, and Oregon State beat the Tigers 13-1 for its 23rd straight win.
The 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.
"We just talked before the game about this is our time, this is our opportunity," Oregon State coach Pat Casey said. "This is what we came here for. Let's not miss that moment. So the guys played great."
The matchup between the teams with the two longest active win streaks in the country was one of the most anticipated at the CWS in years. It turned out to be a dud. The 12-run margin tied the largest in a CWS game in the seven years it's been played at TD Ameritrade.
LSU (49-18) had its 17-game win streak end with its most lopsided loss in Omaha since a 20-6 rout by Cal State Fullerton in 1994.
"It wasn't what we expected or hoped for, obviously," Tigers coach Paul Mainieri said. "Heck of a way for a 17-game winning streak to end. Right from the start things didn't go well for us."
Starter Eric Walker (8-2) left the game after throwing four pitches 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.
"They're definitely a scrappy offense," Gilbert said. "I thought I was making some good pitches. They would just foul it off, and I'd have to go right back at it, do it again. Just couldn't get that put-away when it was crunch time."
Oregon State broke the game open in the sixth.
Harrison hammered Hunter Newman's first pitch to him over the left-center fence for the first CWS grand slam since 2010, the last year the event was played at Rosenblatt Stadium.
Harrison broke into a wide smile as he watched the ball fly out, his trot turned into a run and he whooped and pounded his chest as he approached teammates waiting at home plate. Harrison has four home runs and 14 RBIs in seven NCAA Tournament games.
"That's the stuff you dream of doing," Harrison said, "and for it to come true on such a big stage is an amazing feeling."
Fehmel (6-2), who pitched a complete game in the Beavers' super regional-clinching win over Vanderbilt on June 10, made his second postseason start since the rotation was adjusted to account for the loss of Luke Heimlich.
Heimlich, the Pac-12 pitcher of the year, has been out since it was revealed June 8 that when he was a teenager he pleaded guilty to molesting a 6-year-old girl.
Fehmel wiggled out of a mini jam in the fifth before Zach Watson's homer in the seventh allowed LSU to avoid getting shut out for the first time in its 62 CWS games.
"I guess the main thing was to keep them off-balance as best I could," Fehmel said. "I mixed all three pitches for strikes, and I did that for eight innings to the best of my ability, and it worked out."
LOTS OF PITCHERS
LSU used eight pitchers to tie the CWS record for most in a game. Walker and Gilbert were the only ones to work at least two innings. Those eight pitchers combined for 12 walks, the most in Mainieri's 11 years at LSU.
HE DOESN'T GIVE UP MANY
Newman, LSU's former closer, had not allowed a homer this season until Harrison's grand slam. It was only the second home run Newman has allowed in 100 innings he's worked since 2015.
MORE ON THAT SLAM
There were 196 bases-loaded at-bats in the CWS between Matt Curry's grand slam for TCU in 2010 and Harrison's slam Monday. It was the sixth slam hit at the stadium in 313 total games since 2011. Creighton plays its home games at the park.
Oregon State awaits Florida State or LSU in the Bracket 1 final on Friday. The Tigers play Florida State in an elimination game on Wednesday.