Pac-10 and Big West powers highlight Hawai'i's 2010 baseball schedule.

The Rainbows open against 2006 and 2007 College World Series champion Oregon State in a four-game series Feb. 19 to 22 at Les Murakami Stadium. The following weekend, they play Oregon, which revived its program last season, but has had strong recruiting classes and was anticipated to contend quickly.

Hawai'i also plays Southern California here March 12 to 15.

The Rainbows' only road trip not tied with a Western Athletic Conference series will be at Long Beach State March 24 and at Cal State Fullerton March 26 to 28. The Titans won the College World Series in 2004, when they had Baldwin alumnus Kurt Suzuki.

The Rainbows open the WAC season here against defending champion Fresno State April 9 to 11. The Bulldogs won the WAC tournament that was held here in May. This season's WAC tournament will be held at a neutral site, HoHoKam Park in Mesa, Ariz., the spring training site of the Chicago Cubs.

The WAC's four-game series once again have one doubleheader, a nine-inning first game with a seven-inning second. The only time a series can be spread over four days is if a team is on the road on successive weekends. Hawai'i's only four-game series over four days is at Louisiana Tech April 22 to 25; the series is on the back end of a road trip that starts at Sacramento State.

The annual alumni game will return to the spring. Last year, it was played during fall workouts. The game is set for Feb. 13.

Hawai'i coach Mike Trapasso, who enters his ninth season, said the annual Grand Slam fund-raiser will be held on Feb. 15, or the Monday leading to the season opener.

The Rainbows, coming off a 32-26 season, will have to replace half their infield. Third baseman Vinnie Catricala passed over his senior season to sign with the Seattle Mariners, who drafted him in the 10th round, and second baseman Ryan Morford was a senior last year. Trapasso said Kolten Wong, the WAC Freshman of the Year and freshman All-American, will move from center field to second base.

"The outfield is one area we have a lot of guys," Trapasso said of finding a center field replacement for Wong. "All of our young guys, particularly our freshmen, are exciting."

Trapasso said it's still early yet to determine other open positions.