CORVALLIS — As the regular season wound down, Oregon State coach Pat Casey reflected on how well the Beavers had done, especially after the pitching staff was hit by injuries to start the season.
Oregon State already figured to be without sophomore lefthander Jace Fry because of Tommy John surgery last June. Then junior Ben Wetzler pulled a muscle in his back and senior Taylor Starr was held back because of a sore shoulder. Wetzler and Starr were projected to be half of the Beavers' starting staff.
Nonetheless, Oregon State jumped out to a 15-0 start, and hurler Andrew Moore became a star with 12 wins, three complete-game shutouts and Pac-12 freshman of the year honors.
"That's probably the most surprising thing about this season," said Casey, named the league's coach of the year. "We didn't have those guys at the beginning but we won 15 straight."
The Beavers (45-10) rode that early success to the Pac-12 title and this weekend will host an NCAA regional to kick off the postseason. Oregon State will play Texas-San Antonio today following Texas A&M's opener against UC Santa Barbara.
Crowned as back-to back College World Series champions in 2006 and 2007, the Beavers are making their fifth straight postseason appearance and 14th overall. They are 9-0 in NCAA tournament games at Goss Stadium.
Oregon State, ranked No. 4 in the latest Baseball America, landed the No. 3 national seed.
Texas-San Antonio (35-23) claimed the Western Athletic Conference title last weekend with a victory over Dallas Baptist. It is their fifth league championship and first as a member of the WAC.
"From the moment we set some goals down on paper this season, these guys believed in it and they played incredible baseball down the stretch," Roadrunners first-year coach Jason Marshall said after the victory. "They are very unselfish and just doing whatever they can to win a baseball game. I'm just proud for the program, for the school and for the department."
The two teams have met just once, with the Beavers winning 10-7 in 2011.
At-large selection Texas A&M (32-27) is making its seventh straight postseason appearance, an ongoing school record, and 29th overall. The Aggies have been to the College World Series in Omaha five times, most recently in 2011.
Texas A&M, which played its first season in the Southeastern Conference, was the final team announced during the selection show that aired Monday.
"Nothing's been easy for us, we've had to fight for everything we've got," Aggies coach Rob Childress said. "I'm very proud of our guys, to win 12 of their last 15 and finish the way we did, we gave ourselves a fighting chance."
Texas A&M has faced UC Santa Barbara before.
The Gauchos (34-23) won an at-large berth to the tournament after finishing second in the Big West. It is the ninth time they've made it to the postseason, and first since 2001.
UCSB made a case for inclusion in the 64-team tournament field by winning 11 of its last 14 games.
The team that advances out of the double-elimination Corvallis regional will move on to face a best-of-three series against the winner of the Manhattan (Kan.) regional between Kansas, Arkansas, Bryant and Wichita.