Luis Castillo
Breakdown
Leistung
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7. August 2026
Stumbles in White Sox debut
Castillo allowed five runs on six hits and a walk over four innings in a no-decision Thursday against the Red Sox. He struck out five.
Analyse
After holding Boston hitless through his first two innings, Castillo gave up a two-run homer to Connor Wong in the third before surrendering three runs in the fourth to tie the game at 5-5. It's certainly wasn't the ideal White Sox debut for Castillo, who struggled to a 6.35 ERA across 17 innings in his final three starts with the Mariners before being shipped east at the trade deadline. Through 103.2 innings this year, his ERA sits at 5.30 -- he hasn't finished a season with an ERA above 4.00 since 2018, his first full year in the majors. Castillo will look to turn things around his next time out, tentatively lined up to come at home against the Reds, the team he began his career with in 2017.
2. August 2026
Debut set for Thursday
Castillo will make his White Sox debut Thursday in Boston, James Fegan of SoxMachine.com reports.
Analyse
After making his final start for the Mariners on Tuesday before being dealt to the White Sox on Saturday, Castillo will be well-rested and will have some extra time to get acclimated before debuting for his new organization. A three-time All-Star, Castillo brings ample experience to the White Sox rotation, but he submitted a 5.06 ERA and 1.39 WHIP -- both career-worst marks -- over 99.2 innings for the Mariners this season. He's been especially stung by the long ball recently, surrendering seven home runs over his last three outings after giving up just two total in his eight appearances before that.
2. August 2026
Traded to White Sox
The Mariners traded Castillo to the White Sox on Saturday in exchange for Seranthony Dominguez, Nolan Jones and Boston Smith, Jeff Passan of ESPN.com reports.
Analyse
The 31-year-old will head to Chicago and give the White Sox another right-hander out of the rotation. Castillo struggled across his four starts in July, going 0-3 with a 5.48 ERA and 1.52 WHIP over 23 innings. That said, the White Sox are hoping to get the version of Castillo that recorded a 3.65 ERA or lower in each of the four seasons prior to 2026, including a 2.99 ERA over 150.1 innings in 2022, when he pitched for both the Reds and Mariners.