Seattle Mariners: Breaking News, Rumors & Highlights

1 MLB team is likely to fire its manager

We may already have an idea of the first managerial casualty of the 2026 offseason. The Seattle Mariners are expected to part ways with manager Dan Wilson at the end of the season, according to Adam Jude of the Seattle Times.

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Mariners Manager Dan Wilson Unlikely To Return In 2027

After falling one win short of their first American League pennant in 2025, the Mariners entered this season with sky-high expectations. They boasted AL-leading 79.6% playoff odds at FanGraphs on Opening Day, but the number has plummeted to 0.5% with eight games remaining.

Randy Arozarena News / Larry Brown Sports / September 19

Randy Arozarena is being linked to 1 team in rumors

Randy Arozarena could be eyeing a return to the AL East. The Seattle Mariners All-Star outfielder Arozarena is “likely” to leave the team in free agency this offseason, Ryan Divish of The Seattle Times reported this week.

Cal Raleigh News / MLB on ClutchPoints / September 19

The Mariners’ biggest disappointment this season aside from Cal Raleigh

Cal Raleigh’s stunning collapse, from a 60-homer, MVP-caliber 2025 to a .181/.293/.369 line in 2026, has rightfully dominated the conversation around Seattle’s disappointing campaign.

Pete Crow-Armstrong News / Yardbarker Quizzes

The 'Most lefty-homers in a season' quiz

How many of the lefty mashers with the most home runs in a single season for each MLB franchise can you name in five minutes?

The 'MLB 30/30 Club members' quiz

The 'Last 3-HR game by MLB team' quiz

The 'MLB active hit leaders' quiz

Lazaro Montes News / Seattle Mariners on SI / September 19

Mariners’ Lazaro Montes Keeps Strengthening His Case as a 2027 Building Block

Eventually we’ll stop acting surprised when Lazaro Montes disposes a baseball 400+ feet into the bleachers. The Mariners had watched a three-run lead evaporate Friday night at Coors Field.

Athletics News / Yardbarker

The most surprising player from every MLB team for the 2026 season

The 2026 season has been headlined by young players emerging, but some wily veterans have also had their day. As we head toward the end of the regular season, these 30 players stand out as the biggest surprises on their teams.

MLB News / Field Level Media / September 19

Mariners strive for strong finish, brace for rematch vs. Rockies

The playoffs likely aren't in the immediate future for the Seattle Mariners, but that won't impact how they play their final eight games. Seattle (72-82) recorded a 5-4 victory Friday in the opener of a three-game series against the Colorado Rockies in Denver.

Seattle Mariners News / Lookout Landing / September 19

Mariners News: J.P. Crawford, Aaron Judge, and Pete Fairbanks

Good morning folks! The Mariners scored a feel-good win against the Rockies yesterday with Lazaro Montes’ emphatic blast leading them past Colorado by a 5-4 final.

Seattle Mariners News / Seattle Mariners on SI / September 19

Mariners Face a Leadership Void as Randy Arozarena and J.P. Crawford Near Free Agency

The Mariners could enter this winter with a different starting shortstop and an opening in left field. Both big shoes to fill along with a much larger hole that would be hard to see on a depth chart.

Seattle Mariners News / Lookout Landing / September 19

Boulder soldiers, Seattle summits Rockies 5-4

The first night at Coors Field had it all. Specifically, all the possible infield permutations this Mariners roster could muster, shuffling J.P. Crawford and Cole Young around to give them a variety of vantage points for the 15 hits Seattle yielded to the Colorado Rockies as they somehow escaped with a 5-4 victory.

MLB News / Field Level Media / September 18

Lazaro Montes’ 9th-inning homer lifts Mariners past Rockies

Lazaro Montes homered leading off the top of the ninth, J.P. Crawford also went deep and the Seattle Mariners beat the host Colorado Rockies 5-4 in Denver on Friday night.

MLB News / Seattle Mariners on SI / September 18

Nationals’ Cade Cavalli Extension Strengthens Mariners’ Case to Extend Logan Gilbert

The Mariners have had plenty of reminders that the clock is ticking on Logan Gilbert. The Washington Nationals just conjured up another one. On September 18, they signed Cade Cavalli to a four-year contract covering the 2027 through 2030 seasons, with a club option for 2031.

MLB News / Yardbarker

The most disappointing player from every MLB team for the 2026 season

The 2026 season hasn't gone as planned for many MLB players. These 30 players stand out as the biggest disappointments for their respective teams.

MLB News / Field Level Media / September 18

Frustrated Mariners determined to keep focus in opener vs. Rockies

The Seattle Mariners were eight outs away from reaching their first World Series in 2025, but they likely will sit out the 2026 playoffs following a disappointing regular season.

Seattle Mariners News / Seattle Mariners on SI / September 17

Mariners’ Bright Idea for a Lost September Is Benching Michael Arroyo and Lazaro Montes

So, this is what we’re doing now? The Mariners benched Michael Arroyo and Lazaro Montes on Wednesday, gave Taylor Ward and Weston Wilson nine combined plate appearances and received zero hits, zero runs and zero RBI from them.

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The 'FBS animal nicknames' quiz

The 'Most lefty-homers in a season' quiz

The 'Active 150-yard NFL rushers' quiz

The '10K-yard, 80-TD NFL receivers' quiz

Randy Arozarena News / Seattle Mariners on SI / September 17

Diamondbacks Roster Move Complicates Mariners’ Randy Arozarena Free Agency Outlook

It only took five days for a speculative free-agent fit to turn into something the Mariners may have to take seriously. On September 8, CBS Sports ranked Randy Arozarena fifth in its early look at the 2026-27 free-agent class.

MLB News / Field Level Media / September 17

Mariners break game open, avert sweep by Angels

Cal Raleigh went 2-for-3 with a double and three RBIs and Josh Naylor had two hits, including a double, and two RBIs as the Seattle Mariners salvaged the finale of their three-game series with the Los Angeles Angels with a 7-2 victory Wednesday night in Anaheim, Calif.

MLB News / Yardbarker / September 12

White Sox cannot rely on Luis Castillo with a game in doubt for rest of the season

Luis Castillo allowed three earned runs on four hits and three walks with two strikeouts in 2.2 innings on Saturday night in the Chicago White Sox's 6-5 win over the St. Louis Cardinals.

White Sox's young core has been vital to team's turnaround

The 'MLB active wins leaders' quiz

Stuart Fairchild News / MLB Trade Rumors / September 11

Mariners Outright Stuart Fairchild

The Mariners announced that outfielder Stuart Fairchild has cleared waivers and been outrighted to Triple-A Tacoma. He had been designated for assignment earlier this week.

Seattle Mariners News / MLB on ClutchPoints / September 10

Mariners rumors: The starter Seattle may trade this offseason after disappointing campaign

Logan Gilbert has surfaced as a potential Seattle Mariners trade candidate this offseason as a disappointing 2026 campaign nears its end, barring a remarkable late-season playoff push.

Stuart Fairchild News / MLB Trade Rumors / September 8

Mariners Designate Stuart Fairchild For Assignment

The Mariners announced that outfielder Víctor Robles and left-hander Hoby Milner have both been reinstated from the family medical emergency list. In corresponding moves, right-hander Troy Taylor has been optioned to Triple-A Tacoma and outfielder Stuart Fairchild has been designated for assignment.

Cal Raleigh News / Athlon Sports / September 7