This story was excerpted from Daniel Kramer's Mariners Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

SEATTLE -- With their postseason hopes fleeting, the Mariners made a move on Sunday that signaled towards the future: promoting top hitting prospect Michael Arroyo to the Majors. Ranked the club’s No. 3 prospect and MLB Pipeline’s No. 45 overall, Arroyo was immediately injected into Seattle’s starting lineup for his

SEATTLE -- As Bryan Woo navigated his only true jam on Sunday afternoon, Dan Wilson shifted back and forth on the home dugout’s top step. The Mariners’ manager stared out to the sun-soaked playing surface at T-Mobile Park, weighing a decision on whether to let the electric right-hander finish out

SEATTLE -- They began as murmurs on Saturday night, a chorus of frustration that was faint at first but grew louder with each passing inning. And by the end of the Mariners’ 6-2 loss to the A’s, the boos from the ticketed 40,950 at T-Mobile Park had reached an impossible-to-ignore

This story was excerpted from Daniel Kramer’s Mariners Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

BOSTON -- Peer at the stat sheet from the Mariners’ 8-3 win over the Red Sox on Wednesday afternoon, and it paints the picture of another offensive breakout. Seattle strung together 12 hits -- none of which cleared the fence -- and were in the driver’s seat all afternoon.

BOSTON -- The Mariners’ celebratory home run trident was wielded regularly on Tuesday night. And that included a first-time participant who -- by all forecasts, based on what he accomplished in the Minors -- could become a regular.

BOSTON -- Lazaro Montes’ 6-foot-5, 250-pound frame made the confines of Fenway Park’s already small visiting clubhouse feel even more constricted on Tuesday afternoon. And that was especially so as the Mariners’ 21-year-old power-hitting prospect went through an assembly line of hugs from his new teammates before making his MLB

BOSTON -- Julio Rodríguez had just 2.9 seconds to make a decision on Monday night. And it was one that would swing the fates of how a tense back-and-forth game between the Mariners and Red Sox would play out at Fenway Park.

BOSTON -- September roster expansion wasn’t for another day when the Mariners arrived at Fenway Park on Monday, but they were already preparing for slugging prospect Lazaro Montes to join them within the next 24 hours. Separately, they also added a much-needed -- and welcomed -- return to their bullpen

TORONTO -- The Mariners are adding a big bat and an even bigger personality to their roster for the stretch run, as outfielder Lazaro Montes is expected to join the club this week in Boston, sources told MLB.com on Sunday night. Montes, the Mariners’ No. 5-ranked prospect and MLB Pipeline’s

TORONTO -- It was a new rock bottom, but now with less than a month to climb out of it. After a 7-0 loss to the Blue Jays on Sunday afternoon that capped a weekend sweep, the Mariners are reaching a point of reckoning, if they weren’t there already.

TORONTO -- The Mariners were hopeful that Emerson Hancock would be able to make his next scheduled start on Wednesday in Boston, but were ultimately forced to place the right-hander on the 15-day injured list. That move came ahead of Sunday’s 7-0 loss in Toronto -- two days after Hancock

TORONTO -- By the time Eduard Bazardo realized what was happening, it was already too late. The Mariners’ pivot reliever stood on home plate fielding a relay throw from Cal Raleigh after a wild pitch on a bases-loaded walk during a tense fifth inning on Saturday. One run was already

TORONTO -- As he gathered himself after an awkward tumble in the first inning on Friday night, Emerson Hancock knew right away that something was off. The Mariners’ right-hander had just made a diving tag for his first out of the night, lunging at Toronto’s Nathan Lukes along the first-base

TORONTO -- Bryce Miller is heading to the Mariners’ bullpen. It’s a move that came with a difficult discussion but is also one that the club hopes will help him get back on track -- because the Mariners still view him as a starter long term.

This story was excerpted from Daniel Kramer’s Mariners Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

SEATTLE -- Bryan Woo day was done by the time Andrés Muñoz began meandering from the first-base dugout to the home bullpen on Wednesday afternoon. The Mariners’ closer never figured to pitch in this one -- a 6-0 loss to the Phillies that saw Woo surrender all of the day’s

SEATTLE -- Cal Raleigh homered again on Tuesday night, making it four over his past two games and five on the homestand. And it wasn’t even the Mariners' most critical performance in a 4-1 win over the Phillies.

SEATTLE -- The Mariners received a much-needed reinforcement to their infield ahead of Tuesday’s 4-1 win over the Phillies, as J.P. Crawford was activated from the 10-day injured list. And he’s expected to return to his old position more regularly. However, in his first game back -- against his former

SEATTLE -- More details emerged on Monday relating to the incident involving Brendan Donovan over the weekend, as general manager Justin Hollander revealed that the third baseman was not wearing a helmet when taking a ball off his head in the batting cages. Donovan was subsequently placed on the 7-day

SEATTLE -- Cal Raleigh hasn’t looked like this since the night he hit 60. Yet even during that historic 2025 season, he never had a game like this. The Mariners’ big backstop went for a full-fledged hat trick on Monday night against the Phillies, crushing three home runs for the

SEATTLE -- Bryan Woo will be reinstalled to the Mariners’ rotation for Wednesday’s series finale vs. the Phillies after telling club officials that he “feels 100% confident” that he’s ready to go. And now that the club has clarity on the right-hander’s status after he experienced right shoulder discomfort, it

SEATTLE -- The Mariners had been bracing for the possibility that Colt Emerson’s first season in the big leagues had come to an end, and that is indeed the case. General manager Justin Hollander announced before Monday’s game against the Phillies that the rookie shortstop will undergo surgery on Wednesday

SEATTLE -- The statistical superlatives for Randy Arozarena on Sunday went on and on, and the numbers told a distinct story: He’s on a heater of historic precedent.