SEATTLE -- Colt Emerson was in such a rush to get to T-Mobile Park on Sunday that he couldn’t call his parents to share the news of a lifetime until he was navigating the trenches of Interstate 5.

The Mariners’ prized new infielder had the tightest of turnarounds between <a href="https://www.mlb.com/mariners/news/colt-emerson-mariners-callup"

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SEATTLE -- The Mariners made five roster moves before Monday’s series opener vs. the White Sox, and also announced how they’re going to piggyback Bryce Miller and Luis Castillo in the immediate.

Miller will start Tuesday’s game and Castillo will follow out of the bullpen. But the outlook beyond this turn

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A breakout happening before our eyes and perhaps MLB’s most clutch slugger were recognized on Monday, when Guardians outfielder Angel Martínez and Padres first baseman Gavin Sheets each took home their first career Player of the Week honor.

When Colt Emerson signed an eight-year contract extension at the end of March, it was clear the Mariners thought their No. 1 prospect figured into their plans, both short- and long-term. He had competed all spring for a spot on the big league roster, posting an OPS of

This page will be updated throughout the year with all the latest Mariners injury news and transactions.

SEATTLE -- The exciting news of Colt Emerson being called up to make his Major League debut on Sunday came in the wake of a brutal development for Brendan Donovan, whose left groin muscle strain has again sidelined him on the 10-day injured list.

Donovan underwent imaging

The 2026 season may not be going as expected for the 20-27 Giants, but down on the farm, the kids are alright.

For the fifth time in six weeks, San Francisco has a player on the Prospect Team of the Week. The Giants have had six different prospects grace the list,

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SEATTLE -- The Colt Emerson era is underway in Seattle.

In an incredibly tight turnaround and rapid development on Sunday afternoon, the Mariners recalled their No. 1 prospect and MLB Pipeline’s No. 6 overall before their 8-3 loss to the Padres on Sunday Night Baseball.

The Mariners’ farm already made waves this weekend when Colt Emerson was called up for his MLB debut on Sunday, but another top Seattle prospect is forcing attention toward himself and his red-hot bat.

Lazaro Montes homered in his third straight game for Double-A Arkansas on Sunday, helping drive

SEATTLE -- There’s a reason that the J-Rod Squad is positioned where it is at T-Mobile Park, and why its baby-blue banners are adorned with his catchphrase, “No Fly Zone.”

And Julio Rodríguez showed exactly why during the Mariners’ 7-4 loss to the Padres on Saturday, when making a

SEATTLE -- Dan Wilson might be the least angry manager in baseball, but his rare fiery emotion came out during the Mariners’ 7-4 loss to the Padres on Saturday afternoon that led to his first ejection of 2026.

Wilson was tossed by first-base umpire Chad Fairchild for vocalizing frustration

Felnin Celesten cannot be stopped in recent weeks.

The Mariners’ No. 7 prospect tallied three total hits to help the AquaSox sweep a doubleheader -- 9-5 and 6-2 -- from Vancouver (Blue Jays) at Rogers Field at Nat Bailey Stadium on

SEATTLE -- Cal Raleigh opened up for nearly 15 minutes on Friday about his first career stint on the injured list, his outlook to return from a right oblique strain, how much pain he was playing through and much more.

HOUSTON -- Cal Raleigh’s first career stint on the injured list comes with a lot of questions, many that the Mariners simply didn’t have answers for in the immediate aftermath.

Chief among them, what’s the severity of the right oblique strain? And what’s his timeline for recovery?

HOUSTON -- As dispiriting as the day started for the Mariners, it finished on a high note.

In the aftermath of Cal Raleigh being placed on the injured list for the first time in his career with a right oblique strain, Seattle ran away to an 8-3

HOUSTON -- For the first time in his career, Cal Raleigh is heading to the IL.

The Mariners placed the reigning American League MVP runner-up on the 10-day injured list ahead of Thursday afternoon’s 8-3 series-finale win over the Astros with a right oblique strain. It’s an injury that

Lazaro Montes keeps giving Mariners fans reasons to be excited about the future.

Seattle's No. 4 prospect (MLB No. 30) per MLB Pipeline had a second straight multi-hit game on Friday, including a go-ahead homer in the ninth that led Double-A Arkansas to an 11-8 win over

Colt Emerson is picking up RBIs in droves right now.

HOUSTON -- It wasn’t the Mariners’ most deflating defeat of the 2026 season, but it might’ve been their most exhausting.

And a casualty of the 4-3, walk-off loss to the Astros that reached the 10th inning was their star catcher, as Cal Raleigh was forced to exit to begin

HOUSTON -- Cal Raleigh quite literally took a foul tip straight into the region that’s a catcher’s worst nightmare on Tuesday night, after taking a metaphorical kick in that area for more than two weeks.