Athletics 5, Yankees 4
Josh Donaldson hit a tiebreaking home run in the eighth inning as visiting Oakland won the rubber game of the three-game series.
Yoenis Cespedes clubbed a two-run homer and Luke Montz added a solo blast to lift the Athletics to their fifth win in seven games. Sean Doolittle (2-0) earned the win with a scoreless inning of relief before closer Grant Balfour worked out of a two-on jam for his fifth save.
Lyle Overbay had a two-run single and Robinson Cano and Ichiro Suzuki each had two hits and an RBI for New York, which finished its 10-game homestand with a 7-3 record.
Athletics starter Dan Straily was charged with three runs on four hits in 5 1/3 innings while Yankees left-hander Andy Pettitte labored through a five-inning stint, allowing four runs - three earned - on four hits and four walks.
Montz homered in the fourth and Cespedes went deep an inning later for a 4-1 lead, but the Yankees tied it with three runs in the sixth off Straily and reliever Jerry Blevins on Suzuki's RBI double and Overbay's two-run single. Donaldson's one-out blast in the eighth made a loser of Boone Logan (2-2).
GAME NOTEBOOK: Yankees SS Eduardo Nunez exited the game due to tightness in his left rib cage. An MRI exam came back negative and he is listed as day-to-day. ... Balfour extended his string of consecutive saves to 23 - a streak that started exactly a year ago - while Athletics OF Josh Reddick's pinch-hit double in the ninth marked his first hit in 34 at-bats at the new Yankee Stadium. ... Yankees RHP Preston Claiborne threw two perfect innings of relief in his major-league debut.