Seattle Mariners Aim for World Series Glory in 2026

Mariners look to build on 2025 AL West title and make a deep playoff run.

Published on Feb. 24, 2026

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The Seattle Mariners are entering the 2026 MLB season with high expectations after winning the AL West in 2025. Led by breakout stars Cal Raleigh and Julio Rodriguez, the Mariners have bolstered their roster with key offseason additions and are poised to make a strong push for their first World Series championship in franchise history.

Why it matters

The Mariners' long drought without a World Series appearance has left their passionate fanbase eager for a championship. If the team can overcome recent injury issues to their starting rotation and maintain their offensive firepower, they could end decades of postseason frustration and capture the franchise's first title.

The details

In 2025, the Mariners finished atop the AL West with a 90-72 record, led by Raleigh's historic 60-home run season and a productive lineup that ranked among the league leaders in several offensive categories. However, their postseason run ended in a narrow ALCS loss to the Blue Jays. This offseason, the Mariners addressed roster gaps by acquiring players like Brendan Donovan, Randy Dobnak, and Andrew Knizner, while also maintaining a strong farm system with several top-100 prospects.

  • The Mariners won the AL West in 2025 with a 90-72 record.
  • The 2026 MLB season will be the Mariners' first chance to build on their 2025 success and make a deep playoff run.

The players

Cal Raleigh

The Mariners' star catcher had a breakout 2025 season, hitting 60 home runs with 125 RBIs and a .948 OPS, finishing second in AL MVP voting.

Julio Rodriguez

The Mariners' young outfielder earned a 6.8 WAR in 2025, hitting 32 home runs, driving in 95 runs, and stealing 30 bases.

Bryan Woo

The Mariners' ace pitcher in 2025, finishing with a 4.3 WAR, a 15-7 record, 21 quality starts, and a 2.94 ERA.

Brendan Donovan

The Mariners' offseason acquisition to replace the departed Jorge Polanco, known for his offensive production and versatility.

Randy Dobnak

One of the Mariners' offseason pitching additions, brought in to bolster the starting rotation.

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What’s next

The Mariners will look to carry their momentum from the 2025 season into the 2026 campaign, with their sights set on their first World Series championship.

The takeaway

The Seattle Mariners have built a well-rounded roster with a mix of established stars and promising young talent, positioning them as a top contender in the American League and giving their passionate fanbase hope for a long-awaited World Series title.