Seattle Mariners: Breaking News, Rumors & Highlights

What to Make of Mariners’ Extension of Colt Emerson

One day after reports that Cooper Pratt was on the verge of signing a massive extension before his MLB debut, the Mariners reportedly locked up their top prospect, Colt Emerson, to a much larger one.

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The Morning Bark

The Quiz of the Day

Mariners Prospect Ratings: #6, RF Lazaro Montes

Lazaro Montes, perhaps the single most powerful bat the Mariners have had in their minor leagues this decade, is a polarizing player within the scouting community.

Cal Raleigh News / Athlon Sports / March 31

Mariners' Cal Raleigh Shares Off-Field Update Amid MLB Season

The Seattle Mariners opened up their three-game series against the New York Yankees with a 2-1 win on Monday. They are now 3-2 to open up the 2026 MLB season after splitting their four-game series against the Cleveland Guardians to begin the year.

Pete Crow-Armstrong News / Yardbarker Quizzes

The 'Youngest MLB 30/30 seasons' quiz

How many of the MLB players to hit 30 home runs and steal 30 bases in the same season before turning 25 years old can you name in five minutes?

The 'MLB 30/30 Club members' quiz

The 'MLB active hit leaders' quiz

The 'Last 100-RBI season by MLB team' quiz

Colt Emerson News / Field Level Media / March 31

Reports: Mariners SS Colt Emerson lands record $95M deal

The Seattle Mariners are in agreement with 20-year-old shortstop Colt Emerson on a record-setting eight-year, $95 million extension, multiple outlets reported Tuesday.

Athletics News / Yardbarker

One storyline to follow for every MLB team in 2026

As Spring Training opens for 2026, all 30 teams have high hopes and big questions. These are the storylines to follow for each team heading into Opening Day.

Red Sox to sign former Yankees relief pitcher ahead of Opening Day

MLB announces 80-game suspension for Johan Rojas

Mets star gets help from former teammate after clubhouse issues

Three comeback arms to watch in National League East

Five X factors in the AL Central

Seattle Mariners News / Larry Brown Sports / March 31

Cal Raleigh and Randy Arozarena turn heads with their interaction after beating the Yankees

Winning takes care of everything, and the Seattle Mariners’ thrilling 2-1 win over the New York Yankees at T-Mobile Park in Seattle, Wash., appeared to confirm that things are back to normal between teammates Cal Raleigh and Randy Arozarena.

MLB News / Field Level Media / March 31

Mariners hope to build on walk-off win vs. visiting Yankees

For the New York Yankees and Seattle Mariners, the big bats have yet to get going. But the pitching is in midseason form. Luis Castillo went six scoreless innings and Cal Raleigh hit a walk-off single in the ninth inning as the Mariners defeated the visiting Yankees 2-1 on Monday night.

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.

Seattle Mariners News / Athlon Sports / March 31

Mariners Sign Top Prospect to Historic $95 Million Contract Extension

The Seattle Mariners made the playoffs last season after missing out for two consecutive years with a roster featuring the likes of Julio Rodríguez, Cal Raleigh and Bryan Woo, all of them reaching the MLB through Seattle's farm system.

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The 'Active 30-point NBA games leaders' quiz

The 'Rushing-TD leaders by NFL team' quiz

The 'Most Elite Eight appearances' quiz

The 'Nine three-pointer NBA games' quiz

Seattle Mariners News / Lookout Landing / March 31

Mariners News, 3/31/26: Cal Raleigh, Cody Ponce, and Cooper Pratt

Happy Tuesday! We were treated to our first walk-off of 2026 last night after a single from Cal Raleigh slipped past first base and scored Leo Rivas from third.

Seattle Mariners News / Yardbarker / March 31

Mariners jump aboard the extension train by signing top prospect

After the Milwaukee Brewers gave shortstop Cooper Pratt an extension — Pratt has never played a game in the Major Leagues — the Seattle Mariners decided to hop on the extension train.

Five things to watch in MLB this week

Mariners have a notable new plan for Cal Raleigh

The 'Multiple MLB 30/30 seasons' quiz

Colt Emerson News / MLB Trade Rumors / March 31

Mariners, Colt Emerson Agree To Eight-Year Deal

The Mariners and top shortstop prospect Colt Emerson are in agreement on an eight-year contract extension, according to a report from Robert Murray of FanSided.

Josh Naylor News / Seattle Mariners on SI / March 31

Mariners Are Watching Josh Naylor Slip Into a Troubling Early Slump

This is not exactly the version of Josh Naylor the Mariners thought they were going to start the season with. Through Seattle’s first handful of games, Naylor has opened the season hitless, with the slash line sitting at rock bottom while the power has been completely absent. And still, this is a little tricky.

MLB News / Lookout Landing / March 31

Mariners win first walk-off of the season, 2-1 over Yankees

Even though the Mariners were winning most of the game, it still felt like they were going to have to win on a comeback, which they eventually did. The Yankees were dominating the ABS challenge system, and the Mariners had a few defensive miscues, driving all the focus to the Yankees’ half-innings.

Cal Raleigh News / Field Level Media / March 31

Cal Raleigh’s walk-off single lifts Mariners past Yankees

Cal Raleigh's walk-off single in the ninth inning gave the Seattle Mariners a 2-1 victory against the visiting New York Yankees on Monday night in the opener of a three-game series.

Seattle Mariners News / MLB on ClutchPoints / March 31

Watch Mariners’ Luis Castillo reach incredible milestone at Aaron Judge’s expense

The Seattle Mariners are looking for revenge. Last season, the Mariners came as close as they’ve ever been to winning the World Series. They fell just short in the AL Championship Series, losing to the Toronto Blue Jays in Game 7.

MLB News / Larry Brown Sports / March 30

Giancarlo Stanton commits a ridiculous baserunning blunder vs. Mariners

Giancarlo Stanton quickly realized during Monday’s game that he has still the speed of Giancarlo Stanton. Stanton and the New York Yankees faced off on Monday against the Seattle Mariners at T-Mobile Park in Seattle, Wash.

Cal Raleigh News / Larry Brown Sports / March 31

Mariners have a notable new plan for Cal Raleigh

Baseball fans may unfortunately be seeing less of Big Dumper this season. Seattle Mariners star catcher Cal Raleigh received the day off on Monday. Raleigh was out of the lineup for Monday’s series-opening game against the New York Yankees at T-Mobile Park in Seattle, Wash.

Emerson Hancock News / Seattle Mariners on SI / March 30

Emerson Hancock Just Gave Mariners a Seriously Intriguing Rotation Problem

Emerson Hancock was supposed to be a temporary answer for the Mariners rotation. Instead, he pitched like someone trying to make that arrangement a lot less temporary.

Seattle Mariners News / Last Word On Sports / March 30

Mariners Series Opener; Overview and Take-Aways

The first series of the 2026 season is wrapped up, and the Mariners walk away splitting the series 2-2. There were some ups and some downs in this matchup with a few familiar sights.

Dan Wilson News / Last Word On Sports / March 30

Dan Wilson’s Bullpen Decisions Raise Early Questions in 2026

As the Mariners turn the page to a new season with renewed optimism, the memory of how close they came to a first World Series title still lingers. Just eight outs away from making franchise history.

Paul Skenes News / Yardbarker / March 30

Five things to watch in MLB this week

The MLB season has started and now enters its first full week. Here are five things to watch this week.

Twins manager Derek Shelton is first ABS ejection of MLB season

The 'Charter members of the American League' quiz

Logan Gilbert News / Seattle Mariners on SI / March 29

Mariners Cannot Afford To Get Logan Gilbert Extension Talks Wrong

The Mariners don’t get to fumble this one and shrug it off. Not with Logan Gilbert. And definitely not with how much of Seattle’s identity over the last few years has been built around homegrown pitching that actually turned into something real. Gilbert is one of the reasons this team gets taken seriously in the first place.