CORVALLIS — The Oregon State Beavers are headed to the Baton Rouge Regional where they'll face Belmont on Friday.

CORVALLIS — The Oregon State Beavers are headed to the Baton Rouge Regional where they'll face Belmont on Friday.

It will be Oregon State's fourth straight trip to the NCAA tournament, a school record. The Beavers won back-to-back College World Series titles in 2006 and 2007.

The Beavers have been to the postseason seven times under coach Pat Casey, and they've made 13 trips overall.

No. 2-seeded Oregon State (38-18) will face No. 3 Belmont (39-22) from the Atlantic Sun Conference in Friday's opening game at the double-elimination regional. Host and No. 1 seed LSU (43-16) will play No. 4 Louisiana-Monroe (31-28) in the late game at Alex Box Stadium.

LSU is the No. 7 national seed.

Losers of games one and two Friday will meet on Saturday at 2 p.m. while the winners play at 7 p.m.

Game 5 of the regional will pit the winner of Saturday's first game and the loser of Saturday's second game at 1:30 p.m. on Sunday. The winner of that game will continue on to play the winner of Game 4 (Saturday's second game) at 6:30 p.m.

If necessary, Monday's game will be at 6:30 p.m. CT.

OSU is 38-24 (.619) all-time in the postseason and 21-15 (.583) in regional games.

Casey owns 87 percent (33) of the Beavers' all-time victories and the club is 16-5 (.761) in regional games with him at the helm.

The four straight trips snaps the previous record of three from 2005-07. The Beavers advanced to the College World Series in each of those three years.

Oregon State swept No. 5 Oregon this past weekend. The three victories put OSU's Pac-12 Conference record at 18-12, which tied Arizona State and Stanford for fourth, just two games behind co-champions Arizona and UCLA.

The Beavers' 38 wins equals the 2011 club's regular season victory total.

Oregon State has never met LSU, Belmont nor Louisiana-Monroe.