Seattle Mariners: Breaking News, Rumors & Highlights

If the Mariners mix in a Redbird reliever, a deal could still be struck with St. Louis

The Seattle Mariners are bound and determined to strike some kind of deal with St. Louis before the offseason is over. For weeks, they have mixed and matched, trying to get a trade of infielder Brendan Donovan completed.

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Mariners boost bullpen with righty reliever in Reds trade

The work never stops for the Seattle Mariners in their quest to build the most stacked roster they can to try and get over the title hump. After all, they

Seattle Mariners News / Last Word On Sports / January 16

Mariners Offseason Notes: Trade Talk, Bullpen Moves, International Signings

After an early burst of activity, the Seattle Mariners’ offseason has slowed considerably, leaving several roster questions unresolved. Yet as the trade market evolves and roster depth continues to take shape, Seattle remains active across multiple fronts.

MLB News / Seattle Mariners on SI / January 15

Seattle Mariners add 27-year-old reliever from Cincinnati Reds

The Seattle Mariners will acquire righthanded relief pitcher Yosver Zulueta, who pitched for the Reds organization in 2025. The M's jumped on Zulueta when he became designated for assignment by the Cincinnati Reds on Thursday to make room for their signing of pitcher Pierce Johnson.

MLB News / Yardbarker Quizzes

The 'MLB active RBI leaders' quiz

Can you name the active hitters with the most runs-batted-in in their career?

The 'MLB teammates to hit 30 HRs in 2017' quiz

The 'World Series walk-off home runs' quiz

The 'Active MLB doubles leaders' quiz

Samad Taylor News / MLB Trade Rumors / January 15

Mariners Designate Samad Taylor For Assignment

The Mariners designated utilityman Samad Taylor for assignment. That creates a 40-man roster spot for reliever Yosver Zulueta, whose previously reported acquisition from Cincinnati is official.

NFL News / Yardbarker

The 25 most memorable sports plays of 2025

When it comes to unforgettable plays within the 2025 sports calendar, this was truly a special year. Here's our rankings of the 25 best.

MLB News / Fastball on SI / January 15

Mariners Acquire 27-Year-Old Flamethrower From Reds

The Seattle Mariners have been one of the top contenders in the American League for a few years, but last season was their best chance to make a run at the World Series.

Seattle Mariners News / Lookout Landing / January 15

Seattle Mariners 2026 International Signings Tracker

It’s time for Prospect Christmas, aka the official opening of MLB’s international signing period for the year. While most of the deals are worked out ahead of time and only made official on this day, there are occasionally surprises once the period actually opens, and players will continue to sign over the coming weeks and months.

Justin Hollander News / Seattle Mariners on SI / January 15

Mariners GM Justin Hollander talks about striking a balance in the Seattle lineup

Seattle Mariners general manager Justin Hollander had plenty to say on a popular Seattle sportscast this week, as he discussed the construction of the 2026 version of the team.

Seattle Mariners News / Fastball on SI / January 15

Mariners Sign 17-Year-Old Star Outfielder With 5-Tool Potential

The Seattle Mariners were one of the best teams in the league last year, but they hit this offseason with the risk that a few important players could leave town in free agency.

Seattle Mariners News / Seattle Mariners on SI / January 15

The Mariners' off-season hasn't moved nearly as fast as fans had hoped for

Freshly off a 2025 season where they won 90 games and their first division championship in 24 years, the Seattle Mariners were back to the drawing board right away this offseason, hoping to get another sweet shot of success in 2026.

Seattle Mariners News / Fastball on SI / January 15

Mariners Veteran Commits To Team USA For 2026 WBC

The Seattle Mariners experienced a magical run to the ALCS in 2025, falling just short in Game 7 against the Toronto Blue Jays. They enjoyed a lot of great success stories, including Cal Raleigh hitting 60 home runs and forcing his way into the MVP conversation.

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.

Matt Brash News / Lookout Landing / January 15

40 in 40: Meet the new Matt Brash (but don’t get too used to him)

We thought we knew Matt Brash—a slider-slinging, fastball-fueled thrill ride of dominance and destruction with the occasional meltdown thrown in to keep you on your toes.

Seattle Mariners News / Fastball on SI / January 15

New Mariners Coach Brings Unique Perspective To Team

The Seattle Mariners experienced some heartbreak in the playoffs last year, falling just short in the ALCS against the Toronto Blue Jays. However, they’ve already made some big changes.

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The 'Most passes thrown by NFL season' quiz

The 'Winning NFL playoff debuts' quiz

The 'Passing + Rushing TD playoff games' quiz

The 'Active 1K-receiving-yard seasons' quiz

MLB News / Fastball on SI / January 15

Mariners, Cubs Linked In Potential Trade For Two-Time Gold Glover

The Seattle Mariners rumor mill went quiet for a few weeks starting around the holidays, but things are once again picking up. There's only a month left in this offseason, and Seattle has one obvious need left: a reliable infield bat.

Gabe Speier News / Seattle Mariners on SI / January 15

Mariners reliever Gabe Speier to join Team USA for World Baseball Classic

Seattle Mariners relief pitcher Gabe Speier has been selected as a member of Team USA, representing the nation at the 2026 World Baseball Classic. He joins his Seattle teammate, catcher and AL MVP runner-up Cal Raleigh, as part of this elite, international squad.

Seattle Mariners News / Fastball on SI / January 14

Mariners Lowered Eugenio Suárez Reunion Odds With $6.5M Signing: Insider

Eugenio Suárez's second stint with the Seattle Mariners was one of ups and downs, much like the first. Though he had a memorable two-homer game in the

Josh Naylor News / Seattle Mariners on SI / January 14

A full season of Josh Naylor will be a huge boost for the Mariners in 2026

When the Seattle Mariners traded to acquire first baseman Josh Naylor, they knew they were getting a great hitter, a solid first baseman, and a high-character guy, but his quick assimilation into the Emerald City and immediately inking a deal to stay have endeared him to the organization and its fans.

MLB News / Yardbarker / January 14

Team USA adds more pitching depth to roster, but still lacks a closer

Team USA has all the makings of having a dynamic offense heading into the World Baseball Classic.

Which MLB ballparks could use a change in dimensions?

Every MLB player with double-digit Gold Gloves

The 'Multiple MLB 30/30 seasons' quiz

MLB News / New Baseball Media / January 13

2025 MLB Farm Review: Seattle Mariners

The 2025 Seattle Mariners were littered with homegrown talent. Cal Raleigh, George Kirby, Logan Gilbert, Bryan Woo, and Julio Rodriguez were all difference-makers — and all of those players came through the system.

MLB News / Yardbarker / January 14

Which MLB ballparks could use a change in dimensions?

Each team's park should be different from one another while simultaneously aiming to keep a neutral playing ground.

Rob Manfred: MLB Has Discussed Shortening Schedule & Adding In-Season Tournament

MLB To Celebrate America’s Semiquincentennial Throughout 2026 Season

25 current MLB players who will end up in the Hall of Very Good

The 'MLB Home Run Derby champions' quiz

Cal Raleigh News / Last Word On Sports / January 12

What Can We Expect of Cal Raleigh in 2026

Cal Raleigh had one of the most historic seasons in MLB history. In most other seasons, that level of production would win an MVP. Hitting 60 home runs from the most demanding position in the sport defies logic and is unlikely to be repeated.

Randy Arozarena News / Athlon Sports / January 8

Mariners Announce Randy Arozarena News on Thursday

The Seattle Mariners are heading into the 2026 MLB season with momentum after last year’s deep playoff run. Although the team fell just one win short of reaching the World Series, Seattle returns much of the same core that fueled its success, including outfielder Randy Arozarena.

Seattle Mariners News / Field Level Media / January 8

Reports: Mariners make deals with Randy Arozarena, George Kirby

The Seattle Mariners avoided arbitration with a pair of players Thursday, reaching one-year agreements with outfielder Randy Arozarena and right-handed starting pitcher George Kirby, according to multiple reports.

Randy Arozarena News / MLB Trade Rumors / January 8