Seattle Mariners (85-69, first in the AL West) vs. Houston Astros (84-70, second in the AL West) Houston; Saturday, 7:10 p.m. EDT PITCHING PROBABLES: Mariners: George Kirby (9-7, 4.46 ERA, 1.23 WHIP, 120 strikeouts); Astros: Framber Valdez (12-10, 3.

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