PEORIA, Ariz. -- The radar gun on Friday night got more of a workout than is typically customary for Luis Castillo at this time of year. And that was by design. The elder statesman of the Mariners’ rotation averaged 95 mph on his four-seam fastball velocity among the 20 that

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. -- 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. -- The bone spurs are still in Bryce Miller’s pitching elbow. But the Mariners right-hander discovered a solution early in the offseason that allowed him to avoid undergoing a procedure that he’d long envisioned as inevitable.

SURPRISE, Ariz. -- The defining moments of Bryan Woo's spectacular 2025 were those that no one outside Seattle’s clubhouse saw. In the public eye, there was the All-Star selection, the fifth-place finish for the American League Cy Young Award and the franchise record of pitching through the sixth inning in

PEORIA, Ariz. -- For all his intensity on the field, there’s a gentler side to Josh Naylor that he says is rooted in “respect and kindness.” And no moment encapsulated those values more than when the Mariners first baseman stepped to the plate for the first time for Tuesday afternoon’s

PEORIA, Ariz. -- This was a big one, even by the standards of “Big Dumper.” Cal Raleigh crushed his first homer of the Cactus League season on Tuesday afternoon, pummeling a first-pitch changeup from White Sox reliever Wikelman González and sending it to the left of straightaway center field on

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.

GLENDALE, Ariz. -- Logan Gilbert has added the most robust accessory to his assortment of conditioning devices that he totes to work every day, though this one doesn’t exactly deal with baseball. It’s a stroller, and watching the Mariners’ 6-foot-6 right-hander gently pace it through Seattle’s facility has been one

PEORIA, Ariz. -- Mariners fans might not know much about new lefty reliever Jose A. Ferrer, other than that to acquire him, the front office parted ways with one of its more well-known and longest-tenured prospects. But consider this: There might not be anybody in camp more thrilled about his

PEORIA, Ariz. -- The first steps were clean. The exchanges crisp. And the throws, even at the ripe age of 52, carried the trademark finish to elevate the few eyebrows that weren't already raised behind the backfields at the Peoria Sports Complex. Indeed, Ichiro Suzuki is back in uniform at

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. -- Cal Raleigh knew he was going to utilize a challenge against the first borderline call he caught on Friday. And sure enough, that offering came just seven pitches into the Mariners’ Cactus League opener.

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. -- The scream will be seared into Mariners’ fans minds, maybe forever. In the heartbreaking moments following Seattle’s Game 7 loss to the Blue Jays in the American League Championship Series, Bryan Woo was being interviewed on camera and asked about the legacy of the 2025 team --

PEORIA, Ariz. -- The lid has been lifted, and the Mariners are off and running in Cactus League play. Seattle opened its 31-game Spring Training slate on Friday against the Padres, their neighbors at the Peoria Sports Complex.

PEORIA, Ariz. -- Mitch Garver is returning to the Mariners, but his role is far from solidified. The veteran catcher and designated hitter was slated to report to the Peoria Sports Complex on Thursday to undergo a physical, after which his Minor League contract would become official -- and with

PEORIA, Ariz. -- A familiar face is entering the backup catcher mix for the Mariners this spring, as Mitch Garver has agreed to terms on a Minor League contract, a source told MLB.com on Wednesday. The deal is worth $2.25 million if he makes the club's 26-man Major League roster

PEORIA, Ariz. -- The dog treats have become an integral part of Josh Naylor’s routine. Before hitting the field for infield work and batting practice at Spring Training, the Mariners’ slugging first baseman can be seen stretching on the turf adjacent to the weight room. And at his side is

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. -- Julio Rodríguez was jokingly taken aback at the notion that he’s reached “veteran” status. “Man, you’re making me feel old now,” the Mariners’ center fielder said.

PEORIA, Ariz. -- The Mariners added more left-handed depth to the battle of their final bullpen spots on Monday, swinging a trade with the Marlins for Josh Simpson in exchange for cash considerations. Simpson is expected to join the club in Arizona in the coming days and be in the

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. -- In many ways, every way in which each goes about it is drastically different from the other. Yet, in equally as many ways, that’s part of the organizational allure centered on Kade Anderson and Ryan Sloan, the next arms anticipated off the Mariners’ assembly line of homegrown

PEORIA, Ariz. -- The despondent demeanor was impossible for Cal Raleigh to hide. The Mariners’ catcher was being interviewed on camera moments after learning that he finished runner-up for the American League MVP Award during the All-MLB Awards ceremony in Las Vegas. He was cordial and congratulatory, but didn’t say