White Sox acquire Luis Castillo from Mariners at trade deadline
4 sources • 1 min read • Latest: Aug 2, 2026, 2:45 PM
Last updated Aug 2, 2026
The Chicago White Sox traded for pitcher Luis Castillo from the Seattle Mariners on August 1. In exchange, the White Sox sent reliever Seranthony Dominguez, outfielder Nolan Jones, and catching prospect Boston Smith to Seattle. Castillo, a three-time All-Star, has struggled this season with a 5.06 ERA and is under contract through 2027. Chicago aimed to strengthen its starting rotation, which has been vulnerable after Sean Burke and Davis Martin. The White Sox may pursue further moves to enhance the pitching staff ahead of the postseason.
- •White Sox acquire Luis Castillo from Mariners on August 1
- •In exchange for Seranthony Dominguez, Nolan Jones, and Boston Smith
- •Castillo has a 5.06 ERA in 2026, but is a three-time All-Star
- •Trade strengthens White Sox rotation amid playoff ambitions
- •Further rotation upgrades may be pursued before the deadline
- 2:45 PMYahoo Sports — White Sox trade deadline plan after their Luis Castillo deal is an exciting one
- 4:20 AMYahoo Sports — White Sox acquire Luis Castillo in deadline deal
- 2:13 AMYahoo Sports — White Sox make rare MLB trade deadline addition, bringing in Luis Castillo
- 2:12 AMYahoo Sports — Why White Sox are trading for Mariners All-Star pitcher Luis Castillo
"The South Siders aren't waiting around, as they traded for Luis Castillo to gear up for a division title push
"The White Sox are not expected to be done adding to their rotation just yet.
"The Chicago White Sox made a move for former All-Star pitcher Luis Castillo.
Sources
External links- Yahoo SportsAug 2, 2026, 2:45 PMWhite Sox trade deadline plan after their Luis Castillo deal is an exciting one
The White Sox are not expected to be done adding to their rotation just yet.
- Yahoo SportsAug 2, 2026, 4:20 AMWhite Sox acquire Luis Castillo in deadline deal
The South Siders aren't waiting around, as they traded for Luis Castillo to gear up for a division title push
- Yahoo SportsAug 2, 2026, 2:13 AMWhite Sox make rare MLB trade deadline addition, bringing in Luis Castillo
The Chicago White Sox made a move for former All-Star pitcher Luis Castillo.
- Yahoo SportsAug 2, 2026, 2:12 AMWhy White Sox are trading for Mariners All-Star pitcher Luis Castillo
This is a very intriguing addition for the White Sox this summer.
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