White Sox acquire Luis Castillo from Mariners ahead of trade deadline

5 sources1 min read • Latest: Aug 2, 2026, 3:02 AM

Last updated Aug 2, 2026

White Sox acquire Luis Castillo from Mariners ahead of trade deadline
Summary

The Chicago White Sox have traded for starting pitcher Luis Castillo from the Seattle Mariners, two days before the Aug. 3 MLB trade deadline. Castillo, a three-time All-Star, will bolster the White Sox pitching rotation as the team leads the American League Central. In return, Seattle receives reliever Seranthony Dominguez, outfielder Nolan Jones, and catching prospect Boston Smith. The move marks a significant trade between two contending teams this season.

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Status Watch
  • Luis Castillo is a three-time All-Star pitcher.
  • The trade occurs just before the MLB trade deadline.
  • White Sox lead the American League Central.
  • Mariners are 2.5 games out of an AL Wild Card spot.
  • Seattle receives Seranthony Dominguez, Nolan Jones, and Boston Smith.
Latest Updates
  • 3:02 AMYahoo SportsMLB trade deadline: Chicago White Sox acquire veteran pitcher Luis Castillo in deal with Seattle Mariners
  • 2:37 AMYahoo SportsSeattle Mariners Trade Starting Pitcher to Chicago White Sox
  • 2:14 AMYahoo SportsWhite Sox acquire Luis Castillo in 4 player trade with Mariners
  • 2:00 AMYahoo SportsMariners send 3-time All-Star to White Sox before MLB trade deadline
  • 1:58 AMYahoo SportsMLB trade deadline: White Sox acquire starting pitcher Luis Castillo from Mariners
What they're saying
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ST. PETERSBURG, Fla. — Pitching is a priority for contending teams at the MLB trade deadline. And the Chicago White Sox helped themselves in that department Saturday night, acquiring veteran Luis Castillo from the Seattle Mariners for reliever Seranthony Domínguez along with minor-league outfielder Nolan Jones and catcher Boston Smith and conditional cash considerations. The Sox announced the ...

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The Seattle Mariners and Chicago White Sox pulled off the biggest trade of 2026, two days before the Aug. 3 MLB trade deadline. The White Sox are acquiring starting pitcher Luis Castillo, a three-time All-Star, according to multiple reports. The…

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The White Sox pulled off a massive pre-MLB Trade Deadline move with the Mariners, involving this quartet and Luis Castillo.

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