Seattle Mariners: Breaking News, Rumors & Highlights

Mariners Insider Drops Cryptic Update On Potential Cardinals Trade

Figuring out where the Seattle Mariners stand in their quest for a second baseman is somewhat challenging at the midway point of the offseason. Whether he was going to stick at second base long-term or not, it was clear that the Mariners had their sights set on a reunion with Jorge Polanco above all else.

Colt Emerson News / Seattle Mariners on SI / December 20

Colt Emerson's eventual Mariners debut is already stirring excitement, interest

Ever since being drafted 22nd overall in the 2023 MLB Draft, it seems as if the Mariners' top prospect has been on a fast track to the Major Leagues. And for 20-year-old Colt Emerson, a prep hero from Ohio, has seemingly gone from high school to high expectations in short order.

Seattle Mariners News / The Spun / December 20

Beloved Former Seattle Mariners Pitcher Has Died At 61

The MLB community learned Saturday that a former first-round pick and longtime pitcher passed away at the age of 61. Mike Campbell reportedly died this past Monday at his home in Kirkland, Washington.

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Seattle Mariners News / Seattle Mariners on SI / December 20

Justin Hollander and Jerry Dipoto have formed a Dynamic Duo in Mariners' front office

As the Mariners continue to shop the Hot Stove League for players who will eventually make up the 2026 roster, the franchise is in good hands with two of the better minds in the game today.

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25 MLB players on the brink of stardom in 2026

The stars were out in full force during the 2025 World Series. From Max Scherzer in Toronto to Freddie Freeman, Mookie Betts, and of course, Shohei Ohtani, in Los Angeles, there was no shortage of the game's best under the brightest lights.

Jazz Chisholm News / Seattle Mariners on SI / December 19

Could the Mariners Trade for Yankees' outfielder Jazz Chisholm in Blockbuster Deal?

As the Seattle Mariners continue to spin the wheel to make a deal this off-season, they have a hole in their lineup following the departure of free agent second baseman Jorge Polanco to the Mets.

Cal Raleigh News / Seattle Mariners on SI / December 19

Mariners star Cal Raleigh receives Sports Illustrated Breakout Player Award

Seattle Mariners catcher Cal Raleigh, this season's runner-up for the American League Most Valuable Award, has been named the Sports Illustrated Breakout Star of the Year Award winner for 2025.

Seattle Mariners News / Fastball on SI / December 19

Mariners' $72 Million Slugger Projected To Bolt For Deal With NL Club

The Seattle Mariners took the baseball world by storm at the trade deadline when they swung a pair of trades with the Arizona Diamondbacks to acquire sluggers Josh Naylor and Eugenio Suárez.

MLB News / Fastball on SI / December 19

Mariners Again Linked To Diamondbacks 3-Time All-Star In Trade Rumors

The Seattle Mariners have been on the rise lately. They made it to the ALCS for the first time since 2001 and came to within one win of the World Series.

MLB News / Fastball on SI / December 18

Mariners Lose 27-Year-Old Free Agent Backstop To Padres

Catching depth matters a lot in Major League Baseball, even to the team with the best backstop in the game. Following Cal Raleigh's incredible season that saw him earn a second-place nod in Most Valuable Player voting, the Seattle Mariners have had a surprising amount of offseason transactions centered around the catching position.

Seattle Mariners News / Fastball on SI / December 18

AL East Team Targeted Mariners Postseason Hero Before Departure

The Seattle Mariners recently lost Jorge Polanco in free agency to the New York Mets. The 32-year-old signed a two-year, $40 million contract to replace Pete Alonso at first base.

MLB News / Yardbarker

The 25 greatest pitching seasons from the modern MLB era

America's favorite pastime has more memorable performances than any sport. As such, figuring out which pitchers had the best seasons ever is no easy task.

Cal Raleigh News / Seattle Mariners on SI / December 18

What should the Mariners & Fans realistically expect from Cal Raleigh in 2026?

AL MVP runner-up Cal Raleigh had one of the most impressive career years in baseball history in 2025, crushing 60 long balls and setting the single-season home run ewxord for both a catcher and a switch hitter.

Seattle Mariners News / Fastball on SI / December 18

Mariners Could Be Out After New Update on Japanese Slugger

The Seattle Mariners have been relatively quiet since re-signing Josh Naylor back in November. Unfortunately, they have some holes to fill, as Jorge Polanco left in free agency for the New York Mets.

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Seattle Mariners News / Seattle Mariners on SI / December 18

MLB Insider discusses where the Mariners could be headed now in the off-season

With the free agent departure of second baseman Jorge Polanco, trade talk has been swirling around Seattle regarding the Cardinals' Brendan Donovan as a trade target of the Mariners.

Jorge Polanco News / Fastball on SI / December 17

Jorge Polanco Says Goodbye To Mariners With Classy Message

The Seattle Mariners' infield is going to look a bit different in 2026. On the bright side, the Mariners took care of Josh Naylor early in the offseason and handed him a five-year, $92.5 million deal.

Seattle Mariners News / Fastball on SI / December 17

Unexpected AL West Rival Could Poach Mariners’ 2-Time All-Star

The Seattle Mariners had a strong 2025 season, coming within one win of their first World Series appearance in franchise history. They managed to keep Josh Naylor around, but lost Jorge Polanco in free agency.

Gregory Santos News / MLB Trade Rumors / December 17

Giants, Gregory Santos Agree To Minor League Deal

The Giants have agreed to a minor league deal with right-handed reliever Gregory Santos, as first reported by Mike Rodriguez. He’ll be in major league camp as a non-roster invitee next spring.

Seattle Mariners News / Seattle Mariners on SI / December 17

Mariners provide holiday help to Seattle's less fortunate citizens

The Seattle Mariners Ownership Group announced Tuesday that it will match donations made to Home Team Harvest through the end of the year. Every donation made up to $100,000 will be matched as Northwest Harvest works towards raising $5 million to feed our community.

Andrew Knizner News / Seattle Mariners on SI / December 17

After finally signing with the Mariners, Andrew Knizner is in the fold for 2026

Over the weekend, multiple reports began surfacing that free agent catcher Andrew Knizner had signed a free agent deal with the Seattle Mariners. But a few days later, no official announcement had been made by the player or the club.

Seattle Mariners News / Last Word On Sports / December 16

Mariners Options at Third Base: Solutions at the Hot Corner

The Seattle Mariners ended the season with one of the deepest rosters they have ever put together, finishing agonizingly short of a maiden World Series.