EUGENE, Ore. – Oregon’s 4-1 victory over No. 6 Oregon State on Saturday at PK Park clinched the Ducks their first series victory over the Beavers since UO baseball returned to the diamond in 2009.

Oregon (32-26-1, 10-16) has now won three consecutive games, and for the first time this year, clinched a Pac-10 series victory in just two days of action. The series win is Oregon’s sixth of the season and third in Pac-10 play.

Oregon State (38-16, 17-9) has now lost four games in a row and back-to-back Pac-10 series.

The win also claims the season series for Oregon against the Beavers as UO has three wins in four meetings this year. The series finale is set for 1 p.m. tomorrow at PK Park.

For the second day in a row, freshman Aaron Jones was responsible for driving in the game-winning run.

The Ducks trailed 1-0 entering the bottom of the third, and with the bases loaded and two outs against him, Jones drove a bases-clearing double against an 0-2 count down the left field line.

After Oregon State starter Josh Osich had retired six straight, KC Serna led off the bottom of the third with a single, and J.J. Altobelli’s one-out bunt single put runners on the corners after an OSU error. Osich walked Danny Pulfer to load the bases, and retired Andrew Mendenhall before Jones’ at-bat pushed Oregon ahead 3-1.

Jones continues to lead the club with 36 RBIs and 11 multiple-RBI games, while he has also plated the game-winning run a team-leading five times in 2011.

Oregon starter Christian Jones earned the win, improving to 7-2 on the season and picking up his second win in a Pac-10 start as well as his second win against the Beavers this season. Jones held the Beavers to one run on five hits and six walks while fanning five in five and 1/3 innings of action.

In his last six starts, Jones is 5-0 on the mound and the Ducks are 9-3 on the season when Jones is on the hill.

Junior right-hander Scott McGough, who already posted a win earlier in the week in relief at Portland, finished the game for Jones. McGough recorded his fifth save of the season, shutting out Oregon State and holding the Beavers without a hit while issuing just one walk for the final three and 2/3 innings. For McGough, it was his ninth career save.

Osich (6-4) lasted five innings in the start, allowing three runs on four hits and two walks while striking out five.

As Scott Schultz came on the hill in relief of Osich in the bottom of the sixth, Aaron Jones led things off with a single to right and moved to second on a Ryon Healy sacrifice. Stefan Sabol then drove in Oregon’s fourth run with a single to left as the speedy Jones was able to beat the throw to the plate.

The Ducks got out of a bases-loaded situation in the top of the fourth as Christian Jones loaded the bags on a single and back-to-back two-out walks. He got himself out of the jam by striking out Garrett Nash to end the top of the fourth.

Oregon State took a 1-0 lead in the top of the third as Brian Stamps sliced a two-out, one-run triple down the left field line that scored Ryan Barnes all the way from first.

Aaron Jones led Oregon with a 2-for-4 performance, while Pulfer’s single in the fifth extended his hitting streak to 13 games. The streak is a career high for the second baseman, and also sets a new modern era record for the Ducks since 2009.

The final game of the series is set for a 1 p.m. first pitch from PK Park on Sunday. The game will be televised on Comcast SportsNet Northwest and Comcast Bay Area.

Notes: Aaron Jones continues to lead the Ducks with 36 RBIs and 11 multiple-RBI games…his 36 RBIs are a new Oregon freshman record previously set by J.J. Altobelli (33) and Jack Marder (33) in 2010…Danny Pulfer’s single in the bottom of the fifth extended his hitting streak to 13 games, a career best and a new modern era (since 2009) program record…the crowd of 3,629 was the second largest crowd in PK Park history – the record is 3,791 set on May 1, 2010…for the first time since Oregon baseball was reinstated for the 2009 season, Oregon won the season series and Pac-10 series against the Beavers…the Ducks are now 6-6 against ranked opponents in 2011, and have a 9-3-1 record in their last 13 games...Oregon State holds a 10-5 advantage in the series since Oregon baseball was reinstated in 2009, and UO leads the series 3-1 in games played  at PK Park…Oregon also now leads the 2011 season series 3-1.