It’s been a long time since the White Sox approached the trade deadline as a buyer, and thus it’s been a long time since they made a trade they needed to get right, and right away at that.
When’s the last time there was such pressure on a deal? 2022 was the last time they added, but then-GM Rick Hahn could only come up with Jake Diekman and flagellated himself afterward. They acquired Craig Kimbrel in a creative move at the 2021 deadline, but they were also nine games up, so he was more of an October optimization move than somebody who was relevant to their immediate fortunes. The White Sox sure could’ve used the opposite of what James Shields gave them after he came over from San Diego in 2016, but even that wouldn’t have been enough to save those Sox from themselves.
You might have to go back to 2012, when the White Sox acquired an impending free agent in Francisco Liriano from the Minnesota Twins for Eduardo Escobar in hopes of adding depth to allow the White Sox to carry their 1½-game lead across the finish line.
It didn’t work; the Sox finished three games behind Detroit when all was said and done, and Liriano’s failure to pan out contributed to the fade. They thought they picked out some things Don Cooper could fix, but the prescribed changes never took, and he finished his time in Chicago with a worse ERA (5.40) than he had in Minnesota (5.31). Compounding problems, Escobar ended up overcoming a few false starts to become a valuable player for a division rival, ultimately reaching 10 years of service time.
The overall stakes for Saturday evening’s acquisition of Luis Castillo, which had them sending Seranthony Domínguez, Boston Smith and Nolan Jones to Seattle in return, balance out as similar. The White Sox needed somebody to add to the rotation’s depth, and Castillo certainly counts. They didn’t want to deal upper-echelon prospects in response to a buyer’s market, and they didn’t. Whether they’re actually able to improve Castillo’s performance, and whether they actually cross the finish line with their division lead intact, Chris Getz can look back at the deadline and say he tried to improve the roster, so he cleared the 2020 bar we talked about on Friday’s Sox Machine Podcast.
On today’s @SoxMachine Podcast, Jim Margalus shared a history lesson from the little trade action by former GM Rick Hahn during the 2020 season, which hurt them in the postseason. The thought was “Team arrived a year early.”
He advises Chris Getz not to make the same mistake. pic.twitter.com/da4cJVZB6A
— Josh Nelson – Sox Machine (@soxmachine_josh) August 1, 2026
But they are courting some risk in the process. Castillo has spent the season on the fringes of Seattle’s rotation thanks to a 5.06 ERA and a bevy of younger pitchers who are doing more, and attempts to keep him in the mix despite it all have proven awkward at times. The White Sox split the season series against Seattle by beating Castillo twice — once out of the bullpen, and once as a starter — and now they’re tasked with patching the vulnerabilities they exploited.
And while Liriano was a rental, Castillo is on the books for the remainder of his $22.75 million salary this season, and $22.75 million the next. If everything goes well — or at least OK enough — that impact is lessened by the exchange of the remainder owed to Domínguez, effectively rendering the obligation to Castillo a one-year, $10 million deal for 2027.
But Castillo still has to pitch adequately in 2026, even if he theoretically has time beyond that to make it pay off. If the 33-year-old proves unable to evolve from somebody who thrived on fastball value, then the weight of that $22.75 million salary will be very much felt in terms of roster-building, because it’s nearly double the size of the contract they’d be trying to work around or offload had they retained Domínguez.
Castillo is probably worth a shot — especially if he ends up being the best the White Sox could have done, given what appears to be a narrow market — but should his decline continue unimpeded, it will invite the question of what the White Sox thought they were getting, or why they thought it might turn out different. We’ll find out the first attempts at answering those questions when Getz speaks later this morning.
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Beyond the trenchant analysis of “struggling pitcher could continue to struggle,” it’s worth highlighting a few different factors that made this deal come together in its specific form.
In order to contain the pessimism, we’ll start with the way the White Sox’s young pitching depth failed to materialize this year, which made it pressing to acquire a pitcher, even one in Castillo’s state. It’s not a problem that a 22-year-old Noah Schultz has struggled to stick, but it is a problem that there haven’t been other worthy options, and for months.
But the deal was also driven by a couple of unexpected successes. When the White Sox acquired Jordan Hicks from the Red Sox, it was more about leveraging a rock-bottom payroll to purchase a prospect in David Sandlin. But lo, and behold, after some trial and error, Hicks ended up regaining a form that inspires more confidence in leverage situations than Domínguez, making it possible to move on from a situation that could have turned sour.
And then you had Smith becoming a prospect with trade value far sooner than expected, if people even devoted enough time to think about what they should expect. At the time the White Sox acquired him for Curtis Mead at the start of the season, Smith was a sixth-round small-school senior signing who had yet to appear in a professional game. He showed power and surprising versatility for a catcher at Wright State, but with contact issues and uncertainty about his ultimate defensive home.
Smash-cut to four months later, and Smith is a .291/.450/.589 hitter across three levels over his first 79 professional games, with his most recent work at Double-A also being his best work to date.
Smith’s presence in the Minor Keys will be missed, both for the consistency of his production and some peculiarities contained therein. You look at the overall line — especially the .306/.485/.667 line as a 23-year-old in Double-A — and wonder why the White Sox would so easily move on from that kind of catching prospect. Then you see the 68-percent contact rate, the strange shortage of doubles (seven) to homers (22) and the reluctance to give him everyday playing time at catcher despite a dearth of challengers, and you get the sense that the Sox have general viability concerns — that better pitchers will be able to execute around a rigid swing shape, or that he’s not going to be a catcher to whom you want to entrust a pitching staff.
Considering Smith’s professional career had just gotten underway, I was looking forward to seeing how these quirks resolved themselves. He’ll still get a chance to answer them either way, it’ll just be from further afield.
