Kyle Seager and Ketel Marte each drove in a run, and Brad Miller collected two hits for the Mariners.
Shawn O’Malley singled and walked Sunday and had six hits in his first seven major league at-bats as the Mariners swept a series in Oakland for the first time in six years. The victory also gives the Mariners a season-high five-game winning streak.
Billy Butler hit a home run for the Athletics, who lost their fifth straight. The long ball gives the A’s a 12-game streak with at least one homer, currently the longest active streak as Seattle had its 13-game run snapped.
Iwakuma (7-3) allowed one run on five hits in his 6 1-3 innings. He walked one and struck out three.
Sean Nolin (0-1) became the 28th pitcher used by the A’s, a franchise record. He made his first ML appearance in nearly a year and his first start in two years.
Nolin gave up three runs on five hits over six innings. He walked three and struck out one.
Marte singled in a run, Seager hit a sacrifice fly and O’Malley scored on a wild pitch to put the Mariners ahead in the fifth. A’s right fielder Jake Smolinski threw out Logan Morrison at third earlier in the inning.
Butler’s one-out homer in the seventh ended Iwakuma’s day and Danny Valencia’s groundout in the eighth made it 3-2.
Tom Wilhelmsen got the final five outs for his 10th save in as many chances.
Mariners: Third base coach Rich Donnelly left the game with an upset stomach. Chris Woodward moved to third and outfield coach Andy Van Slyke took over at first base. … Nelson Cruz (strained right quad) missed his third straight game. … OF Franklin Gutierrez (right groin) was also out of the starting lineup a second straight game.
Athletics: C Stephen Vogt left the game in the eighth inning after getting hit in the groin area by a foul ball. Carson Blair replaced him and made his major league debut. … OF Sam Fuld (back spasms) is expected to return during the Houston series. He has not started in nearly two weeks. … OF Josh Reddick did not start due to illness but did pinch hit in the seventh.
Mariners: LHP Roenis Elias (4-7, 4.35) starts at home Monday afternoon against the Texas Rangers. He’s 2-1 with a 2.42 ERA in four starts against the Rangers. He’s facing them for the first time this season.
Athletics: LHP Felix Doubront (2-1, 3.99) opens the A’s series with the AL West leading Houston Astros on Monday afternoon. He’s faced the Astros once, in April of 2013 as a member of the Boston Red Sox.