Tyler Anderson's outing Friday night at PK Park couldn't have been any sweeter.

EUGENE — Tyler Anderson's outing Friday night at PK Park couldn't have been any sweeter.

In what is presumed to be his last appearance in an Oregon uniform at PK Park, Anderson pitched the Ducks (31-26-1) to a 4-1 victory over No. 6 Oregon State (38-15, 17-8) in the Civil War Series opener.

The Oregon State loss, coupled with UCLA's 10-3 victory at Arizona State, put the clubs into a tie for first place in the Pacific-10 Conference with identical 17-8 records.

Anderson, a junior left-hander, held the Beavers to one run in 71/3 innings, scattering four hits and fanning 10. He outdueled Oregon State's Sam Gaviglio, handing the Ashland native his second loss against 11 wins.

With 10 strikeouts, Anderson (8-3) broke his own record, setting the UO single-season record with 114 strikeouts in 2011, and reaching 285 for his career. His 10 strikeouts also matched a career-high against a Pac-10 opponent, and Friday night was his sixth start of the season with double-digit strikeouts. In addition, Anderson recorded his 12th quality start of the season.

Before Anderson's exit, KC Serna gave the Ducks a three-run cushion in the bottom of the seventh, crushing a towering two-run homer to left field on Gaviglio's 1-1 delivery. It was Serna's second round tripper of the season and the 10th of his career.

Gaviglio allowed four runs on four hits, two walks and a hit batter in 62/3 innings on the hill. It was the junior right-hander's first loss since April 1 at Arizona.

Gaviglio fanned six, giving him 102 strikeouts on the year. He became the 10th pitcher in team history to record at least 100 in a season.

Oregon took a one-run lead in the bottom of the first as Danny Pulfer led things off with a double to left center. He was sacrificed to third by Brett Thomas before scoring on Aaron Jones' sacrifice fly.

Pulfer's double extended his hitting streak to 12 games, matching an Oregon program record he set earlier this season. His 16 doubles this season are an Oregon single-season record, and his 31 career doubles are also an Oregon program record.

The Ducks added a run in the bottom of the third to take a 2-0 lead as Oregon loaded the bases on two infield hits and a hit batter. Jones' beat out a would-be double play as his fielder's choice scored J.J Altobelli.

Altobelli led off the third with a single up the middle that was aided by a deflection off the mound. He moved to third on a hit and error, as Pulfer's infield single pulled OSU first baseman Parker Berberet off the bag as the Beavers failed to cover first in time for the out. A throwing error on Berberet then allowed Altobelli to move to third and Gaviglio plunked Thomas to load the bases for Jones.

Jones finished the game 0-for-3 but drove in two runs, as he continues to lead the Ducks with 33 RBIs. His 33 RBIs matches the freshman record shared by Jack Marder and Altobelli from a season ago.

Pulfer led the Ducks with a 2-for-4 performance, while Ryan Dunn had a 2-for-4 effort for OSU.

Dunn scored the Beavers only run in the top of seventh as he was driven after a one-out single on Berberet's double to left.

The Ducks and Beavers will play the second game of this weekend's series with a 2 p.m. start today at PK Park.