PEORIA, Ariz. -- The equipment truck has already departed for Seattle, the few roster battles that were in the works have mostly been decided and the final cuts are in the works. The Mariners still had one more Cactus League game -- they lost, 10-3, on Monday to the Padres

PEORIA, Ariz. -- Colt Emerson had a solid Spring Training, saw as much playing time as any Mariners position player and is a huge part of the club’s long-term plans. But he will begin the 2026 season in the Minor Leagues.

PEORIA, Ariz. -- Giddyup, Ryan Sloan. The Mariners’ overpowering right-hander lived up to his lofty prospect pedigree when overwhelming a lineup featuring MLB Pipeline’s No. 1-ranked farm system on Friday afternoon at MLB Spring Breakout. His final line: Nine up, nine down, 39 pitches, three strikeouts -- and no mercy.

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.

PEORIA, Ariz. -- After much success in its first two years, Spring Breakout is back in 2026, creating a showcase-type opportunity for the best and brightest faces of the future by pitting them against other prominent prospects from other organizations. And for the Mariners, who possess one of the sport’s

PEORIA, Ariz. -- The Mariners are rolling. They've posted five consecutive winning seasons, the longest streak in franchise history, and made their deepest playoff run ever last October, coming within a game of the World Series. They also have one of the strongest farm systems in baseball and used some

PEORIA, Ariz. -- For Kade Anderson, Friday night was about the finish. The Mariners’ wunderkind left-hander made what wound up being his final start of an impressive Cactus League slate, covering three innings in a 10-7 loss to the Dodgers and working through a mid-game adjustment that helped salvage the

SURPRISE, Ariz. -- The Mariners sure seem like they grow homegrown starting pitchers on trees, and Kade Anderson is quickly becoming the latest branch to grow. The No. 3 overall pick in last year’s MLB Draft was at it again in Friday afternoon’s 5-1 win against the Rangers -- in

PEORIA, Ariz. -- The Mariners have made quite a few subtractions in volume to their prospect pool over the past 12 months, notably as chips for their bolder trades to bolster the Major League roster.

Everything about Lazaro Montes is big. The smile. The height. The hype. In Major League camp for the second time as a 21-year-old, MLB Pipeline’s No. 43 overall prospect is part of the next wave of Mariners talent that’s quickly gaining ground in their quest to make an impact in

PEORIA, Ariz. -- Ryan Sloan jogged from beyond the left-field fence and settled in on the Peoria Sports Complex mound prior to the fourth inning of Sunday’s 9-4 loss to the Rangers, pumping his high-octane arsenal during his warmup pitches. The music between innings died down and he toed the

PEORIA, Ariz. -- Kade Anderson was already pacing towards the dugout before the umpire’s call. No automated ball-strike system needed; he knew he’d dotted the outer half for strike three. No fear pitching against established big leaguers for the first time. No doubt in his belonging on this stage.

PEORIA, Ariz. -- It wasn’t long ago that Julio Rodríguez was in Colt Emerson’s shoes. And the Mariners’ front office hasn’t ruled out a similar Spring Training outcome for their No. 1 prospect by MLB Pipeline (No. 9 overall) to the player who held that distinction four years ago --

PEORIA, Ariz. -- For the back fields, the ovation was loud. Yet after the show that Kade Anderson put on, it was also substantiated.

PEORIA, Ariz. -- Michael Arroyo couldn’t wait to return to his hotel on Friday night, where his older brother, Carlos, would be eagerly awaiting to talk about his big day. Arroyo, the Mariners’ No. 5 prospect and MLB Pipeline’s No. 67 overall, crushed Seattle’s first homer of Cactus League play

PEORIA, Ariz. -- Colt Emerson might want to consider packing carry-on only at this point. The Mariners’ No. 1 prospect and MLB Pipeline’s No. 9 overall was in an endless apartment loop last year -- at Spring Training in Arizona, High-A Everett, Double-A Arkansas and Triple-A Tacoma to finish the

PEORIA, Ariz. -- His ‘A’ hacks were among the loudest of the afternoon. As they echoed on a Peoria Sports Complex back field on Wednesday, each boom audibly showed why the Mariners believe Colt Emerson is knocking on the Major League door.

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 -- Jurrangelo Cijntje remains an ambidextrous wonder, and he will continue to explore avenues to pitch with both arms as he climbs up the Mariners’ farm system. But Cijntje will be exclusively focused on pitching right-handed when he reports to his first big league Spring Training on Feb. 11.

SEATTLE -- When MLB Pipeline unveiled its Top 100 Prospects entering the 2026 season last week, the Mariners paced the sport with seven among that group. And each of them will be in big league camp when the Mariners begin Spring Training next month.