The Houston Astros acquired ace Zack Greinke on Wednesday, adding another All-Star and Cy Young Award winner to a already formidable rotation featuring Justin Verlander.
Leake matched his season high with seven strikeouts in seven innings and Seattle rallied with four runs in the eighth inning to beat the Oakland Athletics 6-3.
Edwin Encarnacion capped Seattle's sixth inning with a three-run homer, Mike Leake pitched his first complete game since 2015 and the Mariners routed Houston Astros 14-1.
The Mariners built a 4-2 lead through six innings on solo homers by Vogelbach and Beckham and a two-run, tie-breaking homer in the fifth inning by Mitch. Haniger.
Astro's Josh James struck out seven and scattered four hits over 5 1/3 innings to help Houston eliminate the Mariners from AL West contention with a 7-0 victory.