A Logan Gilbert-for-Steven Kwan swap has the kind of surface appeal that can fool you for a minute. The Mariners have extra starting pitching.
They need better defense. The Guardians have a glove-first outfielder who checks a lot of boxes.
On paper, it feels tidy.
But the more you stare at it, the less sense it makes for either club.
The idea gained traction after Jon Morosi of MLB Network posted that players with one year of control left - including Logan Gilbert, Steven Kwan, Joe Ryan and Sandy Alcántara - are unlikely to be moved for prospects this month because teams aren’t sure what kind of 2027 season to expect. That’s the kind of note that naturally sends people down the trade-rumor rabbit hole, and Gilbert and Kwan quickly became the names to connect.
Seattle’s situation is easy enough to understand. The rotation is already six deep, and that doesn’t even include Ryan Sloan, who is projected to make his major league debut at some point in 2027.
Jerry Dipoto has already said the Mariners have been getting “a lot” of calls about their starters. At the same time, the club is clearly hunting for defensive help after finishing 2026 dead last in team Fielding Run Value.
Kwan fits that need in the most obvious way possible. He won four straight Gold Gloves from 2022-25 and still ranked in the second-highest decile for Fielding Run Value this past season. If you’re looking for a cleaner defensive fit in the outfield, he absolutely brings that.
The problem is the price.
For Cleveland, Gilbert would be a boost to a rotation that already ranked 10th in team ERA in 2026. But MLB Trade Rumors’ 2027 arbitration projections have Gilbert making $15.4 million more than Kwan, and that gap matters for a Guardians team that ranked last in payroll this past season. That’s a big financial jump to make for one year of control.
And from Seattle’s side, the question is even sharper: is it worth giving up arguably their best starter just to upgrade left field?
Randy Arozarena is the player Kwan would theoretically replace in left, and while Arozarena was rough defensively in 2026, his bat remained a major part of the lineup. Kwan hit .282 this past season and brings a disciplined approach, but his .731 OPS points to a limited offensive ceiling because of his lack of power and speed.
None of that is a knock on Kwan. He’s a good player. He just may not be the right one to justify moving Gilbert.
Gilbert wasn’t quite at his 2024 level, when he led the majors in innings and WHIP, but he still led the Mariners rotation this past season and posted a career-high 3.3 bWAR. If the choice is one year of Gilbert or one year of Kwan, Seattle may be better off keeping the arm it knows.
There is another path, too. If the Guardians were open to moving Kwan, Seattle could try to build a deal around one of its other starters instead. Bryce Miller, Emerson Hancock or, at a push and more likely to be accepted, George Kirby would make more sense in that kind of framework.
But if the discussion is strictly about a one-for-one trade involving players with one year of club control left, Gilbert for Kwan looks like a hard sell for both sides.
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