Hangovers are hard to cure, even when you know it’s coming.

The Oregon State baseball team came off a dramatic victory over UCLA on Sunday to claim a crucial Pacific-10 Conference series, and then went through Monday with a headache that grew as the night went on.

Utah Valley took advantage of OSU’s sluggish play to claim an 11-6 nonconference upset before a crowd of 1,264 in Goss Stadium.

“I’m not stunned at all,” coach Pat Casey said. “We got our butt kicked in every aspect of the game. We shouldn’t this late in the year. We played like we had a hangover from a lot of things. We shouldn’t come out flat at all.”

The loss hurt OSU’s fading chances to earn a home regional. Its RPI, which unofficially was at No. 26 in the country Monday, will take a hit after losing a game it should have won.

Just making the postseason is the biggest concern, and that depends on how the Beavers finish their last eight regular season games.

“It’s extremely disappointing,” Casey said of the ramifications of the game.

This was the biggest win of the season for the Wolverines (15-34-1), beating a two-time national champion. They are a former junior college in the fifth year of a six-year transition to Division I athletics.

Fielding betrayed the Beavers with two errors and other breakdowns that did not register in the scoring. The offense had trouble figuring out Utah Valley ace Marcus Moore (9-5) and his sidearm slider.

OSU starting pitcher Josh Osich (0-2) couldn’t get out of the jams his fielders put him in and was down seven runs before he left the game with one out in the fifth inning.

The big blow for the Wolverines came on a grand slam by leadoff hitter Cole Anderson in the fourth inning. All of the runs were unearned, but it gave them a six-run cushion.

Two singles and an uncharacteristic fielding error by shortstop Joey Wong loaded the bases with two outs.

“We just didn’t play well,” third baseman Lonnie Lechelt said. “We gave them plenty of opportunities. We didn’t make plays we needed to get Osich out of innings. If we made them early in the game, it wouldn’t be anything like this.”

Utah Valley scored two runs in the second inning on a bases loaded throwing error by second baseman Jason Ogata when he tried to turn the back end of a double play.

Ogata, usually the designated hitter, made a rare start at second. He was used there to get Logan Boyd at-bats as the designated hitter.

Other lineup changes hurt the Beavers that inning. The first run got on base when a catchable fly ball in short right field fell between Ogata and Koa Kahalehoe, who made a rare start.

The Wolverines piled it on from there, teeing off on OSU’s inexperienced pitching as Casey tried to save the front end arms for today and this weekend.

Utah Valley banged out 13 hits, while the Beavers mustered nine. Their highlight was a five-run eighth inning when they strung together six singles and two errors.

“I have no answers for our lack of competitiveness at the plate,” Casey said. “I thought we could have done a better job offensively.”

Utah Valley 11, Oregon State 6

UTAH VALLEY 020 432 000 — 11 13 2

OREGON STATE 000 001 050 — 6 9 2

Moore, Brinkerhoff (9) and Arendse. Osich, Foster (5), Kidd (6) and Ortiz. WP: Moore (9-5). LP: Osich (0-2). 2B: Arendse (UV), Brinkerhoff (UV), Ortiz (OSU). 3B: Croshaw (UV). HR: Anderson (UV), Wallace (OSU).

Hits: Utah Valley 13 (Hatch 2, Anderson 2, Bargewell 2, Brinkerhoff 2, Richenbach 2, Jones, Arendse, Croshaw). Oregon State (Lechelt 2, Wallace, Ortiz, Ogata, Hayes, Boyd, Robertson, Wong).

RBIs: Utah Valley 10 (Anderson 4, Bargewell 2, Arendse 2, Richenbach, Crowshaw). Oregon State 5 (Hayes 2, Wallace, Lechelt, Robertson).