The Seattle Mariners aim for a sweep of the Houston Astros Sunday night at Daiken Park, looking to tighten their grip on the AL West race.

The Astros are among several teams in a tight race for the final two wild card spots in the American League. Here's the situation, remaining schedule and tiebreaker scenarios for each contender.

While the Mariners have jumped up the standings with their stellar play, the Astros are now tied with the Guardians for third and final wild-card spot in the AL. The final week of the season should be an exciting one.

In the race for three wild card spots, the New York Yankees and the Boston Red Sox are firmly in the race along with the Guardians and Astros. One of those four teams will not make the postseason. With so much to break down, here's a few things to watch in the American League this week.

The Seattle Mariners face the Houston Astros in a regular season MLB game on Sunday, Sept. 21, 2025 (9/21/25) at Daikin Park in Houston, Texas.

However, moments before game time, the Astros made an adjustment with Zach Cole being inserted into the lineup and Mauricio Dubon taking over at shortstop. With concerns mounting over Pena’s status, the Astros announced on X, “Jeremy Pena has been removed from today’s lineup due to oblique soreness.”

The Mariners are -141 favorites (wager $141 to win $100) on the money line in the latest SportsLine consensus odds, while the Astros are +118 (wager $100 to win $118) underdogs. The total is set at 8. You can find the model's latest projections and expert picks for Mariners vs. Astros at SportsLine.

When Cal Raleigh crushed his 57th home run of the year into the Astros' bullpen Saturday night to pass Ken Griffey Jr. for Seattle's single-season record, Houston's longtime bullpen catcher Javier Bracamonte scrambled to grab it.