Donaldson hits 2-run homer in 10th to lift A's past Philles, 8-6.

Oakland Athletics' Geovany Soto hits a double to drive in two runs against the Philadelphia Phillies in the fifth inning of a baseball game Sunday, Sept. 21, 2014, in Oakland, Calif. (AP Photo/Tony Avelar) (The Associated Press)

Oakland Athletics pitcher Scott Kazmir, right, is taken out of the baseball game by manager Bob Melvin, left, during the sixth against the Philadelphia Phillies on Sunday, Sept. 21, 2014, in Oakland, Calif. (AP Photo/Tony Avelar) (The Associated Press)

OAKLAND, Calif. – Josh Donaldson hit a towering, two-run, home run into the left field bleachers with one out in the 10th inning to lift the Oakland Athletics to an 8-6 victory over the Philadelphia Phillies on Sunday.

Nate Frieman singled with one out against Miguel Gonzalez (0-1) to set up Donaldson's game-winner.

Sean Doolittle (2-4) pitched two innings to earn the victory, striking out four. Geovany Soto drove in three runs for the A's, who have won two of three to remain atop the AL Wild Card race.

Marlon Byrd drove in three runs for the Phillies, who have lost six of eight.

A's starter Scott Kazmir lasted just 5 1-3 innings, allowing six runs on 11 hits. He walked one and struck out nine. Since Aug. 3, Kazmir has an ERA of 6.67. It was at 2.37 through July.