Mariners May Need To Worry About An AL West Team Again

As the Oakland Athletics revamp their front office with experienced leaders, the Seattle Mariners might need to prepare for a new challenge in the AL West.

The Mariners have spent the early part of this decade looking like the steady force in the AL West while the Athletics drifted into the background. Since the 2021 season, Seattle has piled up the second-most wins in the division.

The A’s have the fewest. That gap is real, but it may not stay that way forever.

The reason for the warning signs starts in the Athletics’ front office, where the team has already made major changes this offseason. Taylor Smith is in as president of baseball operations, and Cam Castro has been hired as general manager. Both come with experience from the Tampa Bay Rays, Milwaukee Brewers and Boston Red Sox - organizations that were just in the World Series and another that finished third in the majors in Wins Above Replacement this season.

For Oakland, it’s a long-overdue reset. The Billy Beane “Moneyball” days are a distant memory now, and David Forst’s run as general manager finally ended when he was fired in August of this year. That move closed the book on three decades of front office continuity.

The hire that should make the rest of the division pay closest attention is Castro. He’s a former Driveline guy who worked in pitching development for the Brewers before rising to senior vice president of player development.

He helped develop Jacob Misiorowski and is tied to Milwaukee’s wider reputation for building overpowering pitchers. During the postseason, Brewers arms averaged 98.5 mph on the fastball.

That kind of edge is exactly what the A’s need. Over the last five seasons, they have finished no better than 13th in the American League in ERA. This year was even uglier: only the A’s and the Colorado Rockies ended the season with an ERA above 5.00.

Even with all the rebuilding still ahead, Seattle can’t afford to treat this as a distant problem. The Mariners and A’s have split the 26 games they’ve played over the last two seasons, and some of those Seattle losses were infuriating.

The old A’s formula used to be constant turnover. Jason Giambi was there, then gone.

Johnny Damon, same story. More recently, the club moved on from Matt Olson, Matt Chapman and Sean Murphy.

That churn used to define them. It doesn’t anymore.

These days, the A’s are locking people up. They’ve handed out extensions of at least five years to Brent Rooker, Lawrence Butler, Tyler Soderstrom and Jacob Wilson. That shift lines up with owner John Fisher’s growing commitment to the club’s future in Las Vegas, where the team is set to move in 2028.

They still aren’t operating like a big-spending club, but there’s a notable change already. The A’s opened this season with a higher payroll than even the Brewers.

Once Las Vegas brings a stronger, steadier revenue stream, that number could climb further. The team has already tried to extend 2025 AL Rookie of the Year Nick Kurtz, and another deal for No. 2 prospect Leo De Vries could eventually be in play.

For the Mariners, the good news is that their own window is still open. They remain a young, talented club with a deep farm system. That can’t really be said for the Astros and Rangers, who both have difficult paths to staying in the mix beyond 2026.

Still, Seattle would be wise to keep looking over its shoulder. With the A’s building toward Las Vegas and the Los Angeles Angels now being bought by Stan Kroenke, the AL West could be headed for a different kind of fight. It may not be long before Las Vegas and Anaheim become the places that shape the division.

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