The Seattle Mariners find themselves in a tricky spot as the trade deadline approaches, and Luis Castillo has emerged as a name worth watching.
Seattle enters Sunday’s game against the Texas Rangers at 51-54, sitting 2.5 games behind Texas in the American League West and now 0.5 games back of the Houston Astros after slipping into third place. With the Aug. 3 deadline getting closer, the club is in that awkward middle ground where it could still justify adding help, but it also has enough reason to consider selling. A hybrid approach is also on the table, with the Mariners potentially buying in some areas while moving pieces elsewhere with an eye on the future.
Castillo has been one of the more difficult players to move in that conversation. The veteran right-hander’s numbers have regressed, and his contract is a major hurdle, with nearly $25 million due next season on top of the prorated portion of that same figure this year. That has made a trade feel complicated, even as the idea has continued to surface.
The Chicago White Sox could be the surprising fit. They are in the market for starting pitching, but they have made clear to other teams that they will not part with any of their top 10 prospects.
At the same time, they are willing to take on payroll and absorb the full contract of a player. That creates a possible opening for Seattle.
If the Mariners were able to move Castillo to Chicago and the White Sox accepted the entire salary, Seattle would not be looking at a major return in talent. But the financial relief could be the real prize.
Offloading Castillo would clear $25 million for next season, money the Mariners could potentially redirect toward upgrading the offense. It would also create a rotation opening for super prospect Kade Anderson, who is close to a big league promotion.
That kind of payroll flexibility could grow even more if Seattle also moves on from pending free agents Randy Arozarena, Rob Refsnyder, JP Crawford and Mitch Garver. Combined with Castillo’s money, that would leave the Mariners with more than $50 million to work with next season, though some of that would be eaten up by raises for Josh Naylor and arbitration increases.
There are still plenty of moving parts, though. No one knows what the financial picture will look like after the next collective bargaining agreement, and there is also the possibility that Seattle would only be able to shed part of Castillo’s deal rather than all of it.
The Mariners and Rangers are set to play Sunday at 11:35 a.m. PT.
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