CORVALLIS — Koa Kahalehoe scored the game-winning run in the 10th inning on an errant throw from Southern Cal pitcher Daniel Cooper, giving 14th-ranked Oregon State a 5-4 baseball victory in the Pac-10 Conference series finale at Goss Stadium at Coleman Field.

CORVALLIS — Koa Kahalehoe scored the game-winning run in the 10th inning on an errant throw from Southern Cal pitcher Daniel Cooper, giving 14th-ranked Oregon State a 5-4 baseball victory in the Pac-10 Conference series finale at Goss Stadium at Coleman Field.

After Kraig Sitton and Kevin Rhoderick combined to retire the side in the top of the 10th, Kahalehoe led off the bottom half of the inning off with an infield single. Michael Miller followed with a line drive past USC first baseman Ricky Oropesa to put two runners on with no outs.

John Tommasini bunted to Cooper, who overthrew third baseman Billy Pinkerton and allowed Kahalehoe to score from second for the extra-inning victory.

OSU is 23-9, 8-4 in the Pac-10. USC is 19-17 and 9-6.

Sunday's crowd of 2,879 gave the Beavers a total of 8,757 for the weekend at Goss Stadium, a regular season series record.

"It's good to get a win today and come away from the series on a high note," Oregon State head coach Pat Casey said. "We would have liked to win it without going extra innings, but USC is a tough club and made us battle after we went up early."

Miller went 3-for-3 and drove in two runs to pace the Beavers. Kahalehoe and Stefen Romero finished with two hits apiece in the 10-hit attack for the Beavers, who dodged being swept at home by a conference club for the first time since 2007.

The Beavers got their other four runs in the first courtesy of a Romero double and a two-run single by Miller. Ryan Ortiz also scored on a bases-loaded fielding error by second baseman Joe De Pinto.

The RBI single extended Miller's personal-best hitting streak to four games and gave him his 13th and 14th RBI, respectively, of the season.

Romero's double was his team-leading 14th of the season and extended his hitting streak to five games, his second hitting streak of that length this season. His single in the third gave him his 15th multi-hit game of the season.

Kahalehoe entered the game as a defensive replacement in the seventh inning and made the most of his two plate appearances. He also singled in the eighth inning and was stranded at third. It was Kahalehoe's first multi-hit game of the season.

Jorge Reyes got the start on the mound for OSU and pitched into the seventh for the fifth consecutive start. He held the Trojans scoreless through six innings and at one point retired 11 straight hitters. The right-hander struck out five while giving up six hits and four runs.