Olson`s 1st slam, Davis` 47th HR pace A`s win
(MLB.com Oakland Athletics)

The A`s came out swinging in a 9-3 victory over the Mariners on Wednesday at Safeco Field to clinch the series. Khris Davis belted his Major League-leading 47th home run in the seventh inning. Marcus Semien and Chad Pinder also went deep, as did Matt Olson, who enjoyed his first career grand slam to punctuate a six-run fifth. The A`s gained a game on the Yankees in the race for home-field advantage in next week`s American League Wild Card Game. The Yankees, who have five to play, hold a magic number of two to clinch the top spot.