The Mariners could have the best starting pitcher, reliever, and position player to offer at this year’s trade deadline. Here’s a look at the five best pieces they could make available if they choose to sell from their major-league roster this summer.

Losing eight of their past nine games, the Mariners took out their frustrations with a late-inning surge to take down the Guardians in their series opener at T-Mobile Park.

Ownership is still the biggest reason for the Mariners’ chronic mediocrity, but Jerry Dipoto and Justin Hollander’s recent failures in the things they have control over raise plenty of questions about how the major-league club got here and where it’s going.

Rebounding from an ugly start, the Seawolves came all the way back in the second half to punch a ticket to the postseason. The Mariners now may have to do the same after a challenging beginning to June, while the Storm sit somewhere in between.

Big Dumper continued his torrid first half, but it didn’t help the Mariners snap their longest losing streak of the season as subpar pitching and horrid defense doomed them in an 8-6 loss to the Angels.

Julio Rodriguez did his best to try to will the Mariners to a much-needed road win in Anaheim, but his efforts on offense and defense ultimately weren’t enough as the team continued to sputter in a loss to the Angels.

It's been assumed both nationally and locally the Mariners will be one of the most aggressive buyers at the trade deadline this summer. But with the way they've been playing recently, it's hard not to wonder if they'll even be in a position where buying makes sense by then.

The Mariners offense has been sputtering for a few weeks now and it coincides with the disappearance of one of its most important bats.

For a second straight night at T-Mobile Park, the Mariners couldn’t come through with clutch hits when they needed them, wasting another quality outing by Emerson Hancock and ensuring a losing record on the latest home stand in a disappointing loss to the Orioles.

After two sluggish starts, George Kirby looked closer to his pre-injury self on Tuesday night, but the Mariners didn’t do near enough to support him before a line drive to the face knocked him out of the game as the Orioles took the series opener at T-Mobile Park.

Coming through in a pivotal moment as he has done so many times in his career, Randy Arozarena prevented the Mariners from playing a fourth straight extra inning game with a walk-off single to win their series against the Twins.

One night after imploding in extra innings, the Mariners got the upper hand against the Twins this time around, snapping a three-game losing streak with Cole Young coming through in his MLB debut.

Seeking a spark on offense amid a rough stretch to close out May, the Mariners will turn to their top prospect in Cole Young. How has he performed in Tacoma this spring and who does he compare to as he begins his MLB career?

The Mariners have called up Cole Young. Here’s what you need to know about the 2022 first-round pick before he makes his debut against the Twins on Saturday.

Losers of four of their last six series, the Mariners could use some sort of jolt. Here are three roster moves they should consider to potentially do just that.

The Mariners clawed back on Thursday to force extra innings against the Nationals, but an implosion by Collin Snider turned a tight game into a laugher at T-Mobile Park, ending a rough series on a bad note.

Pounding the strike zone all night, Logan Evans pitched like an ace and received more than enough run support thanks to another big game from the Big Dumper as the Mariners rebounded from back-to-back losses in Houston to smoke the Nationals.

Jorge Polanco was one of the best hitters in baseball to start the 2025 season. But in the month of May, he’s statistically been the Mariners’ worst bat.

Even without his best stuff, Bryan Woo positioned the Mariners to win a second straight contest in Houston. But the offense endured a strikeout-filled let down, wasting a solid performance from the ace pitcher.

Mariners catcher Cal Raleigh has not only significantly improved on one of his most glaring weaknesses as a player, but he’s turned it into one of his greatest strengths in 2025.