Major League Baseball’s Winter Meetings kick off next week in Orlando, Florida, and that typically signals the start of chaos across both the trade and free-agent markets. The Seattle Mariners are expected to be active buyers but that doesn’t rule out the possibility of them unloading players as well.
Seattle has several big-league pieces that could attract interest, and solid reasons to consider moving them. Below are three current roster players not prospects who could land on the trade block during the Meetings.
3 Mariners Who Could Be on the Trading Block at the MLB Winter Meetings
RHP Luis Castillo
We’ll begin with the most obvious name. Castillo was tied to heavy trade speculation last offseason and remains a prominent candidate once again.
With his no-trade protection now expired, Seattle has one fewer obstacle if they choose to shop “La Piedra.” Still, his remaining contract poses concerns: he’s owed $24.15 million in each of the next two seasons, a sizable price for a pitcher who will soon turn 33 and has posted just a 104 ERA+ across the last two years.
The Mariners would only justify trading Castillo if they can offload most of his remaining salary and receive at least one legitimate asset either an MLB-ready young player or a proven contributor who strengthens another area of the roster. If that kind of return isn’t available, holding onto Castillo and appreciating his ability to log innings may be their best option.
LF Randy Arozarena
Arozarena, much like Castillo, has looked like a trade possibility since the offseason began. A projected $18.2 million arbitration salary in 2026 adds weight to that expectation.
For a two-time All-Star and former Rookie of the Year, the price isn’t outrageous, but the Mariners may believe this is their final chance to sell high. Arozarena will turn 31 in February and is coming off a steep late-season decline producing a .645 OPS over his last 53 regular-season games and just .574 during the postseason.
Some of that downturn coincided with Dan Wilson’s decision to place him in the leadoff spot, a role Arozarena never seemed comfortable in. A rebound is entirely possible if he returns to a more natural position in the lineup, but the Mariners may still decide the timing is right to explore a trade.
RF/DH Dominic Canzone
Canzone finds himself in a crowded position group. Alongside Victor Robles and Luke Raley, the Mariners have a surplus of right-field options one that gets even more complicated if the team succeeds in landing Jorge Polanco, who would further limit DH opportunities.
All three players are well-liked internally, but Robles and Raley carry limited trade value after injury-affected 2025 seasons, and neither would free up much salary Raley is projected at $1.8 million, Robles is set to earn $5.125 million.
Canzone, meanwhile, is young, inexpensive, and coming off his best big-league campaign, highlighted by a 142 OPS+ in just 82 games. Still, as a platoon-only bat with minimal defensive or baserunning upside, Seattle may conclude that his value has peaked, making this an ideal time to capitalize.
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