Seattle Mariners: Breaking News, Rumors & Highlights

Mariners' first-round selection looks sensational in Spring Training side session

When the Seattle Mariners drafted lefthanded pitcher Kade Anderson in the first round of last year's Major League Baseball Draft, they already knew he would likely be on a fast track to The Show.

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The Mariners lose in their second Spring game of 2026, falling to the Giants, 10-5

In the course of a long season, no MLB team goes undefeated. And that's especially true in Spring Training, where the goal is more about evaluating talent as opposed to racking up victories.

Seattle Mariners News / Minor League Baseball on SI / February 21

Mariners' No. 5 Prospect Opens Eyes With Power Display in Spring Training Debut

Many Seattle Mariners fans are likely eager to see how their favorite team will build on their 2025 campaign, in which they came one win away from representing the American League in the World Series.

Seattle Mariners News / Lookout Landing / February 21

Emerson Hancock picks up 4 strikeouts in 2026 Spring Training debut

It’s all still here. The Mariners played their second game of Spring Training on Saturday, the first of 33 consecutive Saturday games in 2026. There was noticeably less excitement around the blogosphere for this matchup, the novelty of the new season already faded, laying bare the sloppy, non-competitive play of February baseball.

MLB News / Yardbarker Quizzes

The 'Live-Ball Era strikeout leaders' quiz

How many of the 36 MLB pitchers with 2,500 or more strikeouts in the Live-Ball Era (since 1920) can you name in five minutes?

The 'Home run leaders by MLB team' quiz

The ''MLB: The Show' cover athletes' quiz

The 'Active 200-strikeout MLB seasons' quiz

Miles Mastrobuoni News / Seattle Mariners on SI / February 21

Miles Mastrobuoni is making a major statement early in Mariners' Spring Training

Considered a long shot to make the Major League roster, Miles Mastrobuoni struck again, homering in the first inning against the San Francisco Giants on Saturday, as he tries to catch the eyes of the Seattle Mariners' coaching staff.

Athletics News / Yardbarker

25 MLB players that could be traded during the 2026 season

The 2026 MLB season is right around the corner, and it is never too early to start thinking about how it might unfold. Seemingly, every year, we have a decent handle on who should contend and who is likely to struggle, which makes looking ahead to the trade deadline inevitable.

Mitch Garver News / Last Word On Sports / February 21

Mariners Bringing Back Mitch Garver: How He Fits With This Year’s Roster

The Seattle Mariners have re-signed backup catcher Mitch Garver to a minor league contract worth $2.25 million. Provided he makes the 26-man Major League roster at any point in 2026, with an invite to spring training included.

Seattle Mariners News / Total Apex Sports / February 21

Can the Seattle Mariners Overcome Less Power and Still Win In 2026?

The Seattle Mariners are heading into Spring Training with a roster that looks oddly familiar—and that’s actually a good thing. After their deepest playoff run in franchise history last season, the M’s are bringing back most of the squad that got them there.

Cal Raleigh News / Seattle Mariners on SI / February 21

With new ABS in place, Mariners catcher Cal Raleigh plans to test it out

As Spring training opened up, the fans got to see MLB featuring a few changes, most notable the use of the Automated Balls & Strikes (ABS) System. This alternative umpire will monitor pitches in the same way the game's arbiters have for over 150 years, but in a futuristic, 'Space Odyssey' kind of way.

Seattle Mariners News / Seattle Mariners on SI / February 21

MLB Analyst says the Mariners do four big things well in terms of personnel moves

These days, it seems like franchises in Major League Baseball view their player development in a series of steps: They find a solid prospect, make him a big-league star, and he bolts to another team as soon as he hits free agency.

Seattle Mariners News / MLB on ClutchPoints / February 21

The Mariners’ player with most to prove in spring training

There is a big hole in the Seattle Mariners’ history. They have been playing in the American League since 1977 and they have never won the American League pennant and have therefore never played in the World Series.

MLB News / Seattle Mariners on SI / February 21

Seattle Mariners will host San Francisco Giants in the second game of the Spring

After the Seattle Mariners dispatched the San Diego Padres, 7-4, in their Spring Training opener on Friday, there were plenty of things for the Emerald City faithful to talk about.

MLB News / Yardbarker

25 MLB players who have the most to prove in 2026

The new MLB season brings opportunities as players head into their walk years and try to rebound from subpar performances. These 25 players stand out heading into 2026.

Should Red Sox trade for former All-Star infielder?

Mariners getting needed bat in All-Star Brendon Donovan via three-team deal with Cardinals, Rays

Giants CEO calls Dodgers a 'dragon to slay'

Yankees' latest endeavor points to a Jasson Dominguez mistake waiting to happen

Top of Phillies' rotation is elite, but also comes with questions

Seattle Mariners News / Seattle Mariners on SI / February 21

Mariners using 2025 ALCS heartbreak as motivation for a World Series run in 2026

The Seattle Mariners started things in Spring Training the right way, defeating the San Diego Padres in the exhibition opener, 7-4. Infielder Michael Arroyo, the M's number 5 prospect, hit a home run and a double to pace the squad, as they look to return to the postseason in 2026.

Michael Arroyo News / Seattle Mariners on SI / February 21

The spotlight belonged to Mariners prospect Michael Arroyo to start Spring Training

The Seattle Mariners opened up their Spring schedule with a win over the San Diego Padres on Friday, marking the first on-field action for the team since being eliminated in the 2025 American League Championship Series.

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The 'Last 40-homer season by MLB team' quiz

The 'Most seasons played by NFL team' quiz

The 'TD-catch leaders by NFL team' quiz

The 'Receiving leaders by NFL season' quiz

Seattle Mariners News / Seattle Mariners on SI / February 20

How Cal Raleigh helped facilitate Mitch Garver's return to the Mariners

After the Seattle Mariners declined his 2026 option, catcher Mitch Garver sought greener pastures in the world of free agency. After spending two years in the Emerald City as the backup to superstar starter Cal Raleigh, Garver found himself finding very little opportunities elsewhere.

MLB News / Seattle Mariners on SI / February 20

The Mariners defeat the San Diego Padres before a record Spring Training crowd

The Seattle Mariners were officially in action for the first time in 2026 on Friday, as they played their exhibition opener with the San Diego Padres.

Michael Arroyo News / Lookout Landing / February 20

Michael Arroyo shines as Mariners take Spring Training opener from Padres, 7-4

It’s been four months since the Seattle Mariners played a baseball game. Four months can feel like a long time. A lot happened: the holidays came and went,

Cal Raleigh News / Lookout Landing / February 20

40 in 40: Cal Raleigh is ignorant

Instead of writing about Cal Raleigh’s 2025 season, I’d like to show you a few pitches that caught my attention. The Mariners had stormed back in the ninth inning to tie the game and send it to extras (thanks to a Cal Raleigh home run), which meant that Cal would have to wear the catcher’s gear for an extra inning.

MLB News / EasySportz / February 19

Game Preview: Mariners, Padres Set For Spring Training Opener In Peoria

The Cactus League schedule kicks off Friday when the Seattle Mariners and the San Diego Padres meet in spring training action at 1:10 p.m. MST Friday, Feb.

Seattle Mariners News / MLB on ClutchPoints / February 18

Mariners bring back veteran catcher to back up Cal Raleigh

The Seattle Mariners addressed catcher depth Wednesday by bringing back a familiar face ahead of spring training. The Mariners agreed to a minor league deal with veteran catcher Mitch Garver, adding competition behind Cal Raleigh as camp opens in Peoria.

Seattle Mariners News / Last Word On Sports / February 16

Mariners Spring Training: Camp Storylines and Prospects to Watch

Seattle Mariners spring training camp is already underway, with pitchers and catchers reporting last week and live batting practices beginning. With a

Bryce Miller News / MLB on ClutchPoints / February 16

Mariners’ Bryce Miller ‘feels 100%’ in spring training after injury-riddled 2025

With the Seattle Mariners ramping things up in Spring Training, positional players and pitchers are getting ready. The Mariners’ Bryce Miller spoke about his health, detailing the differences between last season and this season, according to Mariners’ beat writer Daniel Kramer.

Seattle Mariners News / Minor League Baseball on SI / February 16

Top Mariners Pitching Prospect Dazzles Early in Spring Training

The Seattle Mariners are already known for having one of the best starting pitching staffs in professional baseball heading into the 2026 season. But that rotation could get even more dangerous relatively soon, at least based on some early spring training videos of the team's top pitching prospect.

Seattle Mariners News / Last Word On Sports / February 15

Why a Top Infield Prospect Could Miss the Mariners’ Opening Day Roster

Colt Emerson might be one of the best prospects in baseball, but that does not mean he needs to be on the Seattle Mariners’ Opening Day roster. A consensus top-10 prospect on every list released since the start of 2026, Emerson is one of the most complete and well-rounded players to come through the Mariners’ farm system in years.

Jesse Hahn News / MLB Trade Rumors / February 14

Blue Jays Sign Jesse Hahn To Minors Deal

The Blue Jays announced that right-hander Jesse Hahn has been signed to a minor league contract. The deal includes an invitation for Hahn to attend Toronto’s big league Spring Training camp.

Cole Young News / Just Baseball / February 9

Could Cole Young Be the Mariners’ Answer at Second Base?

If I asked you to name the Seattle Mariner who hit the farthest home run in the 2025 season, a few answers might come to your head. You may first think that, surely, with the 60 home runs Cal Raleigh swatted in his record-breaking season, he would be the one.