Every trade between the San Francisco Giants and the Seattle Mariners
The San Francisco Giants and the Seattle Mariners have made 24 deals with each other since 1980, 4 of them sales. The most recent, on Jun 29, 2026: San Francisco Giants traded 1B Buddy Kennedy to Seattle Mariners for cash. The first on file, on Jun 16, 1980: The Seattle Mariners purchased Casey Parsons from the San Francisco Giants.
San Francisco GiantsSeattle MarinersPlayers who played for both →
San Francisco Giants
Seattle Mariners24 deals, newest first
| Date | Deal |
|---|---|
| Jun 29, 2026 | San Francisco Giants traded 1B Buddy Kennedy to Seattle Mariners for cash. |
| Jul 22, 2024 | Seattle Mariners traded RHP Mike Baumann to San Francisco Giants. |
| Jan 5, 2024 | Seattle Mariners traded LHP Robbie Ray to San Francisco Giants for RF Mitch Haniger, RHP Anthony DeSclafani and cash. |
| Jul 31, 2023 | Seattle Mariners traded 2B Mark Mathias, CF AJ Pollock and cash to San Francisco Giants for Player To Be Named Later. |
| Jul 7, 2023 | Seattle Mariners traded OF Jack Larsen to San Francisco Giants. |
| May 24, 2023 | Seattle Mariners traded C Jacob Nottingham to San Francisco Giants. |
| Aug 2, 2022 | San Francisco Giants traded LHP Matthew Boyd and C Curt Casali to Seattle Mariners for RHP Michael Stryffeler and C Andy Thomas. |
| May 14, 2022 | Seattle Mariners traded OF Stuart Fairchild to San Francisco Giants for 2B Alex Blandino and cash. |
| May 12, 2022 | San Francisco Giants traded 1B Mike Ford to Seattle Mariners for cash. |
| May 11, 2022 | San Francisco Giants traded RHP Prelander Berroa to Seattle Mariners for 2B Donovan Walton. |
| May 31, 2021 | The San Francisco Giants purchased Sam Delaplane from the Seattle Mariners. |
| Mar 29, 2019 | The Seattle Mariners traded Jesus Ozoria to the San Francisco Giants for Tom Murphy. |
| Dec 7, 2016 | The Seattle Mariners traded Tyler Herb to the San Francisco Giants for Chris Heston. |
| Apr 1, 2007 | The Seattle Mariners traded Travis Blackley to the San Francisco Giants for Jason Ellison. |
| Jul 30, 2005 | The Seattle Mariners traded Randy Winn to the San Francisco Giants for Yorvit Torrealba and Jesse Foppert. |
| Jan 25, 2002 | The Seattle Mariners traded David Bell to the San Francisco Giants for Desi Relaford. |
| Jan 29, 1998 | The Seattle Mariners traded Scott Smith and Jalal Leach to the San Francisco Giants for Dave McCarty. |
| May 21, 1995 | The Seattle Mariners traded Wilson Delgado and Shawn Estes to the San Francisco Giants for Salomón Torres. |
| Dec 11, 1991 | The Seattle Mariners traded Bill Swift, Mike Jackson and Dave Burba to the San Francisco Giants for Kevin Mitchell and Mike Remlinger. |
| May 24, 1990 | The Seattle Mariners traded Gary Eave to the San Francisco Giants for Russ Swan. |
| Mar 19, 1988 | The Seattle Mariners traded Donell Nixon to the San Francisco Giants for Rod Scurry. |
| Jun 13, 1985 | The Seattle Mariners purchased Jack Lazorko from the San Francisco Giants. |
| Jun 20, 1980 | The Seattle Mariners purchased Marc Hill from the San Francisco Giants. |
| Jun 16, 1980 | The Seattle Mariners purchased Casey Parsons from the San Francisco Giants. |
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.