Logan Gilbert sits at the center of the Mariners’ offseason puzzle, and that’s true for two reasons at once: he’s the club’s clearest trade chip, and he may also be the arm Seattle can least afford to lose.
He’s heading into his last year of club control after posting 165 innings with a 3.71 ERA in 2026. He made $10.9 million and is projected to land at roughly $15.4 million through arbitration. The Mariners have reportedly talked to him about an extension, but nothing has come together yet.
That leaves Seattle with a familiar fork in the road. Sign him, trade him, or let the situation drift into another season and hope it resolves on its own.
That last option is the one that hands control away to everyone else. If the Mariners can’t strike a deal, they need to know exactly what one year of a frontline starter can bring back.
What it probably won’t bring is the kind of middle-of-the-order bat Seattle has been trying to land. The Mariners aren’t going to flip spare relievers and prospects for a young, controllable impact hitter if another team has already decided to pass on him. The market says big bats cost big returns, and that’s why Gilbert keeps popping up in trade conversations.
The appeal is obvious. He’s been an All-Star twice, he usually takes the ball, he can handle a heavy workload, and contenders will believe in him when October arrives. In a pitching market where dependable starters come at a premium, Seattle would have something a lot of teams want.
But value doesn’t automatically solve the Mariners’ bigger problem. A Gilbert deal built around prospects, upside or a pile of maybes could easily leave the club thinner in 2027 than it is now.
If Seattle is going to move him, it needs an established hitter who can step into an everyday role and reshape the lineup right away. If that player isn’t available, Gilbert should stay put.
There is at least some reason to think the rotation could absorb the loss. George Kirby and Bryan Woo are under club control beyond 2027.
Bryce Miller is still in the mix. Kade Anderson reached the majors in 2026 and is expected to go after a full big-league workload next season.
Ryan Sloan should be close enough in camp to become another option later in the year.
Still, none of that makes this simple. Anderson is not a direct replacement yet.
Sloan hasn’t pitched in the majors. Miller has had injuries and uneven stretches over the last two seasons.
Seattle can probably handle a Gilbert departure better than most teams could, but “better than most” may still not be enough.
The money matters too, but only to a point. Moving his projected $15.4 million could help, but only if the Mariners use that space aggressively. A trade centered on payroll relief would be a tough sell for 2027.
The baseball case is much stricter: if Gilbert goes, the return has to be a major-league hitter with multiple seasons of control. A corner outfielder or infielder.
An everyday player. Real damage.
Not a platoon bat.
Even with all of that on the table, the first call should still be to Gilbert and his camp. Frontline starters don’t show up often, and Seattle already knows he can shoulder the workload. The Mariners should make one more serious push for an extension.
If that gap never closes, then they need to shop him with a hard price. Logan Gilbert is the Mariners player most likely to be traded because his contract, his value and the team’s pitching depth all point that way.
He’s also the one whose exit would show exactly how serious this organization is about fixing the lineup.
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