Seattle Mariners: Breaking News, Rumors & Highlights

Mariners Prospect Retires From Pro Ball at Age 25

The Seattle Mariners can cross one name off their minor-league depth chart as they prepare to begin a new season. Outfielder Carson Jones was the Mariners' 15th-round pick in the 2023 draft out of Virginia Tech.

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The Quiz of the Day

40 in 40: Ben Williamson got better results as the season progressed—but did he actually get better?

Ben Williamson doesn’t rush; he just moves quickly. The defensive standout’s quick feet and steady hands earned him a promotion to MLB after just 689 plate appearances in the minors, despite his college career coming in the decidedly mid CAA.

MLB News / Fastball on SI / January 26

Mariners Lose Backstop to Astros in Free Agency After 8-Year Stint

The Seattle Mariners and Houston Astros are beginning to form a fierce rivalry at the major league level. After seizing control of the American League West in 2025, the Mariners are looking to put their foot on the gas pedal and claim the division as their own for the long haul.

Brendan Donovan News / Seattle Mariners on SI / January 25

The Mariners need to steer their ship away from Brendan Donovan (for now)

The Seattle Mariners have had an exhaustive offseason, as they continue to try to fill holes at second and third base. In these weeks of searching, one name kept coming up as a top trade priority: St.

Cleveland Guardians News / Yardbarker Quizzes

The 'MLB active doubles leaders' quiz

How many of the active MLB players with 300 or more doubles in their career can you name in five minutes?

The '2025 MLB hits leaders' quiz

The 'Cleveland's 1997 World Series roster' quiz

The 'Most multi-HR games by MLB team' quiz

Seattle Mariners News / Seattle Mariners on SI / January 25

The Seattle Mariners reportedly sign international star Mairon De La Rosa

After receiving an initial offer from the Big Apple, Dominican prospect Mairon De La Rosa is choosing the Pacific Northwest, and he will sign with the Seattle Mariners, pending approval of the deal by Major League Baseball.

MLB News / Yardbarker

The 20 most significant MLB Rule 5 draftees

The Rule 5 draft, held annually at the winter meetings in December, never garners much fanfare, but it has been known to yield some noteworthy transactions.

Samad Taylor News / Fastball on SI / January 25

Padres Sign 27-Year-Old Speedster After Mariners Departure

The Seattle Mariners' recent roster management left infielder Samad Taylor without a job. Taylor played most of the last two seasons with Triple-A Tacoma, but he did play seven games on the major league roster.

Seattle Mariners News / Fastball on SI / January 25

Eugenio Suárez Linked to AL East Contender as Potential Landing Spot

The Seattle Mariners have had a relatively quiet winter, with their only major move being the signing of Josh Naylor, who returned on a five-year, $92.5 million contract.

Tai Peete News / Seattle Mariners on SI / January 25

20-year-old infielder Tai Peete is showing promise in the Seattle system

For the Seattle Mariners, it's a nice luxury to have a player like Tai Peete around. The 20-year-old shortstop and second baseman has been rapidly rising in the M's minor league ranks, and he's developing into the kind of threat that could benefit the big club.

Gabe Mosser News / Seattle Mariners on SI / January 25

Mariners sign Phillies minor league free agent Gabe Mosser

Earlier this month, the Seattle Mariners signed 29-year-old right-handed pitcher Gabe Mosser, who had previously pitched for the Philadelphia Phillies organization.

Seattle Mariners News / Seattle Mariners on SI / January 24

Mariners analyst Jon Morosi talks about Julio Rodriguez's outlook for 2026

During this offseason, MLB.com released some early outlooks for the upcoming season. In the course of their prognostications, they selected Seattle Mariners centerfielder Julio Rodriguez as the favorite to with the 2026 American League Most Valuable Player Award.

Samad Taylor News / MLB Trade Rumors / January 24

Padres Sign Samad Taylor To Minors Contract

The Padres have signed infielder Samad Taylor to a minor-league deal with an invitation to Spring Training, according to Chris Cotillo of MassLive. Taylor was designated for assignment by the Mariners last week and elected free agency prior to signing this new deal.

MLB News / Yardbarker

The 25 greatest pitching seasons from the modern MLB era

America's favorite pastime has more memorable performances than any sport. As such, figuring out which pitchers had the best seasons ever is no easy task.

MLB News / Fastball on SI / January 24

New Report on Cardinals All-Star Is Bad News for Mariners

The Seattle Mariners have had a relatively quiet offseason thus far. Their only major move was re-signing Josh Naylor to a five-year, $92.5 million contract.

Cooper Criswell News / Seattle Mariners on SI / January 24

Mariners acquire swingman Cooper Criswell in trade with Mets

The Seattle Mariners have yet to make a blockbuster deal on the back end of the offseason, but they've certainly added a lot of depth heading into Spring Training.

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The 'NFL undrafted receiving leaders' quiz

The 'NFL tight end receiving leaders' quiz

The 'Last 100-catch season by team' quiz

The '2025 NFL first-team All-Pro' quiz

Cooper Criswell News / Lookout Landing / January 23

Mariners acquire RHP Cooper Criswell

As spring training draws ever nearer, the Mariners have again fortified the group of arms they’ll bring to camp (known around here as The Pitching Pile), acquiring RHP Cooper Criswell from the Mets for cash.

Seattle Mariners News / Lookout Landing / January 23

Friday Feedbag: Go-to karaoke songs for Seattle Mariners

Hello and welcome back to the Feedbag, where I will never serve you slop. What a gorgeous Friday in the Pacific Northwest as we sit about 1 month away from Spring Training baseball and a certain local NFL team are one win away from their third fourth Super Bowl trip in team history.

MLB News / Fastball on SI / January 23

Mariners, Mets Complete Trade Bringing 5-Year MLB Veteran to Seattle

The New York Mets had to put a desirable player on waivers, and the Seattle Mariners pounced. After right-handed pitcher Cooper Criswell was designated for assignment on Wednesday night as the Mets finalized the trade to acquire Freddy Peralta and Tobias Myers from the Milwaukee Brewers, the Mariners skipped the line to claim him off waivers.

Eugenio Suarez News / Fastball on SI / January 23

NL Central Team Predicted to Steal Eugenio Suarez from Mariners

The Seattle Mariners have had a relatively quiet offseason, and have also suffered some key losses. Despite re-signing Josh Naylor, they lost Jorge Polanco to the New York Mets in free agency.

Seattle Mariners News / Fastball on SI / January 23

Mariners Lose 27-Year-Old Outfielder to Free Agency

One former member of the Seattle Mariners is available on the open market and can go anywhere at this point. Seattle had outfielder Samad Taylor with the organization over the last two seasons, but he was designated for assignment after the club acquired right-handed pitcher Yosver Zulueta in a trade with the Cincinnati Reds.

Seattle Mariners News / Fastball on SI / January 23

Mariners' Eugenio Suárez Linked to Reunion With Shocking NL Contender

Seattle Mariners slugger Eugenio Suárez is one of the best players left in free agency right now, but because of his defense and age, he's not expected to sign a big contract.

Cal Raleigh News / MLB on ClutchPoints / January 23

Analyst calls out Mariners star Cal Raleigh’s placement in top player rankings

With the Seattle Mariners preparing for Spring Training, the team is looking for another season of greatness from catcher Cal Raleigh, who is coming off a historic season.

Samad Taylor News / MLB Trade Rumors / January 23

Samad Taylor Elects Free Agency

The Mariners announced that infielder/outfielder Samad Taylor has cleared outright waivers and elected free agency. He was designated for assignment last week when Seattle acquired right-hander Yosver Zulueta.

Julio Rodriguez News / Athlon Sports / January 22

MLB Makes Julio Rodriguez Announcement

The Seattle Mariners took a major step forward as a franchise in 2025, coming just one win short of their first-ever World Series appearance. Although the season ended in heartbreak, optimism remains high in Seattle, with the club’s core locked into team-friendly deals that provide stability for years to come.