Seattle Mariners: Breaking News, Rumors & Highlights

The Seattle Mariners found a smart rotation plan with one growing catch

The Mariners’ piggyback experiment is working on paper, and the growing frustration around it is the part worth watching. Seattle beat the Athletics 9-2 on May 25 behind four scoreless innings from Luis Castillo and five more from Bryce Miller, with the two covering the entire game without touching the rest of the bullpen.

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The Quiz of the Day

What Is The Seattle Mariners’ 'Piggyback Strategy'? Here’s How It’s Helping Them Win

The Seattle Mariners are trying something unconventional, and so far, it’s creating one of the more fascinating pitching experiments in baseball. Instead

Seattle Mariners News / Fastball on SI / May 26

Mariners Have Trade Deadline Gold for Pitching-Needy Teams

If you're a club looking to add some pitching this season before the 2026 Major League Baseball trade deadline, the team you should be circling right now is the Seattle Mariners.

Seattle Mariners News / Seattle Mariners on SI / May 25

Mariners Fans’ Frustration Boils Over After Latest Luis Castillo-Bryce Miller Reversal

The Mariners are running the piggyback back. That alone was enough to make part of the fan base rub their temples. But an extra wrinkle came in over the weekend.

New York Yankees News / Yardbarker Quizzes

The 'ERA leaders since 2003' quiz

How many ERA leaders from both leagues since the 2003 season can you name in five minutes?

Seattle Mariners News / Lookout Landing / May 25

Mariners News: Luis Castillo, Colt Emerson, and Dylan Cease

Good morning! The Mariners suffered another disappointing defeat yesterday as some defensive miscues led to a 6-8 loss to the Kansas City Royals. Bryan Woo finished his 4.2 innings of work with four earned runs on six hits and four strikeouts as the Royals took advantage of a fifth-inning rally to secure their series win.

MLB News / Yardbarker

The 25 greatest rookie seasons in MLB history

Not every all-timer has instant success at the next level. For many baseball players, it takes a few bumps in the road out of the gate before they ever reach stardom.

Seattle Mariners News / Lookout Landing / May 25

Seattle Mariners Minor League Roundup – Week Nine

It was a brutal week for the Rainiers, dropping five of six to the Salt Lake Bees on the road. This team has weathered a substantial amount of turnover

MLB News / Lookout Landing / May 24

Mariners let defense hold them down in 6-8 loss to Royals

[Verse 1] You may find yourself Living in the strike zone And you may find yourself in another part of the country (Kansas City) And you may find yourself

Seattle Mariners News / MLB on ClutchPoints / May 24

Mariners’ Fans up in arms over Dan Wilson’s Luis Castillo-Bryce Miller decision

The Seattle Mariners are looking to catch the Athletics in the AL West. While the Mariners have dealt with a rash of injuries, they are still in contention in the division.

Bryce Miller News / Seattle Mariners on SI / May 24

Mariners Cannot Let Backlash Kill Their Luis Castillo-Bryce Miller Piggyback Experiment Yet

The easiest thing for the Mariners to do after the Luis Castillo-Bryce Miller piggyback blew up in their face would be to pretend the idea was ridiculous from the start.

Seattle Mariners News / Lookout Landing / May 24

On one-third to won third

If the season ended today, the Mariners would miss the playoffs. The season doesn’t end today. The Mariners will play their 54th game on Sunday to finish off the first third of the season.

Seattle Mariners News / Lookout Landing / May 24

Mariners News: J.P. Crawford, Chris Taylor, and Key and Peele

The Mariners continue to maintain a comfortable, arms length distance away from .500 after a miserable loss in Kansas City last yesterday. The gang will try for a series win this morning at 11:10 am PST.

MLB News / Yardbarker

Which 20 players have hit four home runs in an MLB game?

The only two things rarer in modern-day baseball than the four-homer game is the Triple Crown and the unassisted triple play. The former is, of course, done over an entire season, while there's a large level of lucky in the unassisted triple play.

MLB News / Lookout Landing / May 23

Mariners shutout in Kansas City

The Mariners did not score, and they did not win. The Mariners dropped game two of their series in Kansas City on Saturday by a score of 4-0. They collected just four hits — three from Luke Raley — and drew one walk, allowing Stephen Kolek to work through all nine innings with ease.

Seattle Mariners News / Athlon Sports / May 23

Two Pitching Staffs That Changed Their Arm Angles (Or Didn't) and What It's Costing or Paying Off

Either there’s something special in Emerson Hancock’s coffee up there in Seattle, or the organization is brewing a new approach, well beyond Hancock’s breakout in 2026.

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The '3 3-pointer, 3-block Playoff games' quiz

The 'Most 30-point playoff games by team' quiz

The 'NASCAR Coca-Cola 600 winners' quiz

The 'ERA leaders since 2003' quiz

Kade Anderson News / Seattle Mariners on SI / May 23

Kade Anderson’s Resilient Response Gives Mariners Another Reason to Trust the Hype

Kade Anderson finally looked human for a few minutes, which was probably something everyone needed to see. He had spent the early part of his professional career dominating Double-A ball.

MLB News / Field Level Media / May 23

Mariners out for continued road success in matchup vs. struggling Royals

The scuffling Kansas City Royals are providing a good opportunity for the Seattle Mariners to continue their recent road success. After winning the opener of a three-game set vs.

Colt Emerson News / Athlon Sports / May 22

Fantasy Baseball 2026: The Most Important Number in Colt Emerson’s Minor League File

Let's get the curtain call out of the way. Colt Emerson debuted with the Seattle Mariners on May 17 at age 20, became the youngest player in the organization since Felix Hernandez was a teenager causing problems in 2005, and arrived carrying the largest contract ever handed to a drafted player without a day of MLB service time.

Victor Robles News / Field Level Media / May 22

Mariners reinstate OF Victor Robles from injured list

The Seattle Mariners reinstated outfielder Victor Robles from the 10-day injured list on Friday. Outfielder/first baseman Connor Joe was optioned to Triple-A Tacoma in a corresponding transaction.

J.P. Crawford News / MLB Trade Rumors / May 20

J.P. Crawford Getting Work At Third Base

Mariners shortstop J.P. Crawford has been getting work at the hot corner and was taking grounders there prior to today’s game. Daniel Kramer of MLB.com was among those to report that the idea was actually brought up by Crawford, who approached manager Dan Wilson about the possibility this weekend.

Matt Brash News / Field Level Media / May 20

Mariners reinstate RHP Matt Brash from injured list

The Seattle Mariners reinstated right-hander Matt Brash from the injured list and optioned left-hander Robinson Ortiz to Triple-A Tacoma on Wednesday. Brash, 28, landed on the 15-day IL on May 1 with inflammation in his right lat.

Colt Emerson News / Yardbarker / May 19

Mariners rookie makes history with dramatic first career HR

Mariners rookie Colt Emerson makes history with dramatic first career HR

Emerson, whom the Mariners selected in the first round of the 2023 MLB Draft, now provides Seattle with another piece for both the present and the future.

Mariners to promote top prospect Colt Emerson

The 'Most home runs by a switch hitter' quiz

Seattle Mariners News / MLB Trade Rumors / May 18

Mariners Recall Robinson Ortiz, Select Brennen Davis

The Mariners announced several roster moves today. Infielder Patrick Wisdom has been reinstated from the 10-day injured list and left-hander Robinson Ortiz has been recalled from Triple-A.

Seattle Mariners News / Yardbarker / May 17

Mariners to promote top prospect Colt Emerson

It was a matter of time before Seattle Mariners prospect Colt Emerson was promoted to the majors.

Padres go up early, improve to 5-0 this season against Mariners

Merrill Kelly goes distance for MLB rarity in Diamondbacks' win

Bryce Harper offers high praise of Pirates star Paul Skenes

Pirates' Ryan O'Hearn to miss time due to injury

Each MLB division leader's biggest weakness at the quarter point

The 'Active 40-HR MLB seasons' quiz

Seattle Mariners News / Larry Brown Sports / May 15

Mariners superstar lands on IL for first time in career

The Seattle Mariners placed catcher Cal Raleigh on the 10-day injured list Thursday with a right oblique strain, marking the first IL stint of his six-year major league career.

Seattle Mariners News / Yardbarker / May 14

Mariners’ Cal Raleigh heads to the IL for the first time in his career

Seattle Mariners catcher Cal Raleigh has not had the same level of success this season as he had last year when he finished runner-up to New York Yankees outfielder Aaron Judge for the American League MVP.

Mariners' Cal Raleigh nearing wrong side of MLB history

Aaron Judge has advice for Anthony Volpe after disappointing return

Inside the NL Central, MLB's best division: Where each team excels, struggles at season's quarter mark

Three MLB teams who could get early jump on trade deadline

Cal Raleigh News / Larry Brown Sports / May 13

Cal Raleigh went to superstitious lengths to break his career-worst hitless streak

Cal Raleigh was willing to do whatever it took to finally get a hit, even if it meant having one of the strangest showers of his life before Tuesday’s game against the Houston Astros.