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The Seattle Mariners and Houston Astros are in a crucial AL West Crown battle, with the Mariners 2.5 games back in the American League Wild Card race. George Kirby, a 13-11 pitcher with a 3.60 ERA, will take the mound for the Mariners, who are 21st in the majors in run scoring. Meanwhile, the Astros will hand the ball to Yu Kikuchi, who's 9-9 with a 4.19 ERA. Seattle's bullpen has been very good this season, ranking 9th in the majors with a 3.69 ERA, while the Astros' bullpen is elite, ranking 6th with a 3.64 ERA.

For the over/under, the author leans towards the under 8, despite Seattle's 35-44 record on the road and Houston's 45-34 record at home. He believes the pitchers and bullpens will keep the score low, making under 8 a good value bet.

In the other game, the Chicago Cubs and Philadelphia Phillies are vying for home field advantage. Javier Assad, 7-5 with a 3.34 ERA, will start for the Cubs, who are facing a Phillies team that still has things to play for. The Cubs' bullpen has been middle-of-the-pack this season, and their offense has been solid but not spectacular. Philadelphia, meanwhile, will hand the ball to Christopher Sanchez, who's 11-0 with a 3.25 ERA, despite being shelled by the Cubs in his previous start. The Phillies' bullpen has been looking much better lately, and their offense has been solid if not spectacular.