Every trade between the Chicago White Sox and the Seattle Mariners
The Chicago White Sox and the Seattle Mariners have made 16 deals with each other since 1979, 2 of them sales. The most recent, on Aug 2, 2026: Seattle Mariners traded RHP Luis Castillo to Chicago White Sox for RHP Seranthony Domínguez, C Boston Smith, RF Nolan Jones and cash. The first on file, on Jul 6, 1979: The Chicago White Sox traded Rich Hinton to the Seattle Mariners for Juan Bernhardt.
Chicago White SoxSeattle MarinersPlayers who played for both →
Chicago White Sox
Seattle Mariners16 deals, newest first
| Date | Deal |
|---|---|
| Aug 2, 2026 | Seattle Mariners traded RHP Luis Castillo to Chicago White Sox for RHP Seranthony Domínguez, C Boston Smith, RF Nolan Jones and cash. |
| Feb 3, 2024 | Chicago White Sox traded RHP Gregory Santos to Seattle Mariners for RHP Prelander Berroa, OF Zach DeLoach and Future Considerations. |
| Jun 15, 2023 | Seattle Mariners traded 2B Kean Wong to Chicago White Sox. |
| Nov 30, 2018 | The Chicago White Sox traded Omar Narváez to the Seattle Mariners for Alex Colomé. |
| Nov 16, 2017 | The Seattle Mariners traded Thyago Vieira to the Chicago White Sox. |
| Jul 24, 2017 | The Chicago White Sox purchased Jean Machi from the Seattle Mariners. |
| Jul 24, 2017 | The Chicago White Sox purchased Mark Lowe from the Seattle Mariners. |
| Mar 20, 2006 | The Chicago White Sox traded Joe Borchard to the Seattle Mariners for Matt Thornton. |
| Jun 27, 2004 | The Chicago White Sox traded Jeremy Reed, Miguel Olivo and Mike Morse to the Seattle Mariners for Freddy García and Ben Davis. |
| Mar 26, 1998 | The Chicago White Sox traded Jim Bullinger to the Seattle Mariners for Marty Weymouth. |
| Jul 18, 1995 | The Chicago White Sox traded Warren Newson to the Seattle Mariners for Jeff Darwin. |
| Jun 26, 1986 | The Chicago White Sox traded Scott Bradley to the Seattle Mariners for Iván Calderón. |
| Jun 27, 1984 | The Chicago White Sox traded Salomé Barojas to the Seattle Mariners for Jerry Don Gleaton and Gene Nelson. |
| Jun 15, 1983 | The Chicago White Sox traded Tony Bernazard to the Seattle Mariners for Julio Cruz. |
| Dec 11, 1981 | The Chicago White Sox traded Todd Cruz, Jim Essian and Rod Allen to the Seattle Mariners for Tom Paciorek. |
| Jul 6, 1979 | The Chicago White Sox traded Rich Hinton to the Seattle Mariners for Juan Bernhardt. |
Trades and sales between the two franchises under every name they have had. To May 2022 from Retrosheet, since then from MLB's transaction feed. The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.