AL WEST

Mariners (1st in AL West; tied with HOU)

Win tiebreaker vs: Rangers, Tigers, Guardians
Lose tiebreaker vs: Blue Jays, Yankees
Tiebreaker TBD vs: Astros (5-5; 3 games left), Red Sox (3-3)

The final series between the Mariners and Astros, from Friday-Sunday in Houston, will not only matter in the standings but will decide the head-to-head tiebreaker between the two clubs as well. The Mariners hold the better intradivision record (.633 winning percentage to Houston's .512), which technically has them in first place heading into the weekend.

Astros (1st in AL West; tied with SEA)

Win tiebreaker vs: Blue Jays, Rangers
Lose tiebreaker vs: Guardians, Red Sox, Tigers
Tiebreaker TBD vs: Mariners (5-5; 3 games left), Yankees (3-3)

The Astros would lose out in tiebreaker scenarios with the Guardians and Red Sox but can still pick up the head-to-head tiebreaker over the Mariners.

https://www.mlb.com/astros/news/mlb-playoff-picture-and-bracket-2025