BATON ROUGE (AP) — Coach Matt Senk and his unflappable band of ballplayers from upstart Stony Brook invaded the most hostile territory in college baseball and vanquished another national power.

Six-time national champion LSU is done, and after 22 seasons with a Stony Brook program that played in Division III when he arrived in 1991, Senk is taking his team to the sport’s promised land: the College World Series in Omaha.

Frankie Vanderka threw a three-hitter, Travis Jankowski had four hits and Stony Brook continued its stunning run with a 7-2 victory over LSU on Sunday night in the deciding game of the Baton Rouge super regional.

Stony Brook, which has won 28 of 30, became only the second team to open the tournament as a No. 4 seed in the regional round and reach Omaha. The first was Fresno State in 2008 which went on to win the national title.

This Stony Brook squad, which beat host Miami in winning the Coral Gables Regional, just might be good enough to repeat that feat. Playing before crowds of 10,000-plus draped in LSU purple-and-gold, the Seawolves didn’t merely survive so much as thrive, outhitting LSU 35-15 in the series.

The only time the Seawolves (52-13) trailed in the three games was when Mason Katz hit a walk-off single to end a thrilling Game 1 in the bottom of the 12th.

And while Stony Brook may have been a relative unknown before this riveting postseason run, pro baseball scouts were quite familiar with them. Seven Seawolves were selected in last week’s Major League Baseball draft (compared to five from LSU). They have eight players with 168 or more at-bats hitting .300 or better.

LSU coach Paul Mainieri and his players told anyone who would listen that Stony Brook was “legit,” as good as anyone they play in the Southeastern Conference. Still, the Tigers hoped that playing in Alex Box Stadium, where one overflow crowd about matched Stony Brook’s home attendance for the entire season, would be a distinct advantage. After all, LSU (47-18) came into the series 8-0 in NCAA tournament games at the current Alex Box since it opened in 2009.

Stony Brook’s 3-1 Game 2 win behind ace Tyler Johnson’s three-hitter ended that streak, but LSU was still confident they would fare better as Stony Brook went deeper into its rotation.

Indeed, the Tigers hit Vanderka when he was called upon for the 12th inning of Game 1, and Katz pounded a solo home run off Vanderka in the bottom of the first inning Sunday to tie it 1-1.