Oregon is looking for its third win in four games this season against OSU
Oregon led 5-2 entering the late innings Sunday, but Stanford rallied against the usually reliable UO bullpen to salvage the series finale.
David Peterson delivered a quality start and catcher Tim Susnara contributed a two-RBI double.
Cole Irvin allowed three runs over seven and Mitchell Tolman drove in three in the first two innings as Oregon won a crucial series opener.
Oregon and ace left-hander Cole Irvin can give their postseason hopes life when Stanford comes to PK Park for a series beginning on Friday.
Ten former Ducks are playing professional baseball, including two at the Triple-A level.
Oregon left several runners in scoring position throughout Sunday's rubber match with UW, but came through in the 11th inning for a 3-2 win.
Oregon rallied to take the lead in the fourth and the bullpen bounced back from Friday's loss as the Ducks beat Washington on Saturday, 4-3.
Oregon couldn't overcome its miscues and lost Friday to Washington despite a few exceptional defensive moments by outfielders.
Oregon will shift around some responsibilities Friday and Saturday, when head coach George Horton will miss games against UW at PK Park.
Oregon loses game three of the series 7-3
Oregon evened the series and will go for series win Sunday