CORVALLIS — One day after a near-perfect performance in every phase of the game, it all unraveled.

That’s the way the 2008 campaign has gone for the Oregon State baseball team.

UCLA took advantage of free passes handed out by OSU pitching for an 11-4 Pacific-10 Conference victory over the Beavers on Sunday afternoon before a crowd of 2,539 in Goss Stadium.

“All around we didn’t play good enough, didn’t hit good enough, didn’t play defense good enough and didn’t pitch good enough,” shortstop Joey Wong said.

The loss ended a three-game winning streak for the Beavers, and dropped them into sole possession of fifth place in the conference standings with four Pac-10 contests to go.

The win helped the Bruins (25-22, 8-9), who are fighting for playoff positioning. They are sixth in the Pac-10 and on the positive side of the postseason bubble.

Today’s game turns into a crucial contest for both teams. Winning the series goes a long way in improving their RPIs, which the NCAA selection committee uses to make decisions on who goes to regionals, and where.

“(Today) is a big day for us,” Wong said. “We need to get out of here with a win in this series and flush that out of our system.”

Problems for the Beavers (23-19, 10-10) started when pitcher Tanner Robles struggled for the second consecutive game. He didn’t get out of the first inning, and allowed three runs.

Robles walked the leadoff batter and gave up a double and single before getting two outs. A second walk knocked him out of the game for Greg Peavey (2-3).

“We went down that road last week at Washington State,” coach Pat Casey said of the quick leash. “We had to make sure we could stay in the ball game. We came back and got three (runs), so it was the right move.”

Control issues have plagued Robles in his last two outings. His tender shoulder may have been acting up again.

When asked about his shoulder, Robles hesitated, smiled and then said the shoulder felt healthy. What hurt him more was not coming back strong from his first loss in five years.

“I wasn’t happy about it,” Robles said about being pulled so early. “That’s (the coach’s) call. I wish I could help my team, but it’s the coach’s call.”

Peavey did a solid job at times in 5 2/3 innings of long relief, but when he put runners on, the Bruins scored.

Two walks in the third inning led to three runs and a hit batter in the seventh set up a two-run home run by Brandon Crawford.

UCLA capped off its big day with back-to-back home runs off James Nygren in the ninth for three more runs.

“He held us where we needed to for a while, but most walks and hit batters score,” Casey said of Peavey. “We couldn’t get anything going offensively, and that didn’t help the situation, either.”

OSU’s offense started strong with three runs in the first inning when Jason Ogata, Ryan Ortiz and Drew George drove in base runners. It went cold until Lonnie Lechelt’s solo home run in the seventh.

The Beavers were held to five hits, only two after the first inning. UCLA starting pitcher Charles Brewer (7-4) settled down and went 7 1/3 innings.

“We came back in the first inning, but we just didn’t get enough runs again,” Wong said.

Brewer struck out nine. The Beavers were caught looking at third strikes as he painted the black on both sides of a wide strike zone.

“I thought we had a good game plan,” Casey said. “I thought we knew what we needed to do, but couldn’t create anything after the first inning. (Brewer) appeared to be good enough to get us out on a regular basis.”

UCLA 11, Oregon State 4

UCLA 303 000 203 — 11 12 1

OREGON STATE 300 000 100 — 4 5 1

Brewer, Novak (8) and Babineau. Robles, Peavey (1), Nygren (7) and Ortiz. WP: Brewer (7-4). LP: Peavey (2-3). Sv: Novak (2). 2B: Dunlap (UCLA), Crawford (UCLA), Weiser (UCLA), Babineau (UCLA), Ortiz (OSU). HR: Crawford (UCLA), Decker (UCLA), Lechelt (OSU).

Hits: UCLA 12 (Haerther 2, Crawford 2, Babineau 2, Decker 2, Dunlap, Curtis, Weisser, Duran); Oregon State 5 (Ogata 2, Ortiz, Wallace, Lechelt).

RBIs: UCLA 10 (Decker 4, Haerther 2, Crawford 2, Cohen, Duran); Oregon State 4 (Ogata, Ortiz, George, Lechelt).