Every trade between the Boston Red Sox and the Seattle Mariners
The Boston Red Sox and the Seattle Mariners have made 23 deals with each other since 1977, 6 of them sales. The most recent, on Nov 18, 2025: Boston Red Sox traded RHP Alex Hoppe to Seattle Mariners for C Luke Heyman. The first on file, on May 28, 1977: The Seattle Mariners purchased Tom House from the Boston Red Sox.
Boston Red SoxSeattle MarinersPlayers who played for both →
Boston Red Sox
Seattle Mariners23 deals, newest first
| Date | Deal |
|---|---|
| Nov 18, 2025 | Boston Red Sox traded RHP Alex Hoppe to Seattle Mariners for C Luke Heyman. |
| Nov 17, 2023 | Boston Red Sox traded 3B Luis Urías to Seattle Mariners for RHP Isaiah Campbell. |
| Nov 9, 2022 | Boston Red Sox traded RHP Easton McGee to Seattle Mariners for cash. |
| Jun 14, 2021 | The Boston Red Sox purchased Yacksel Ríos from the Seattle Mariners. |
| Apr 23, 2018 | The Boston Red Sox traded Roenis Elías to the Seattle Mariners for Eric Filia. |
| Dec 7, 2015 | The Boston Red Sox traded Wade Miley and Jonathan Aro to the Seattle Mariners for Roenis Elías and Carson Smith. |
| Aug 9, 2015 | The Boston Red Sox purchased Carlos Rivero from the Seattle Mariners. |
| Feb 20, 2013 | The Boston Red Sox purchased Mike Carp from the Seattle Mariners. |
| Sep 4, 2012 | The Boston Red Sox purchased Guillermo Quiroz from the Seattle Mariners. |
| Jul 31, 2011 | In a 3-team trade, the Seattle Mariners sent Érik Bédard and Josh Fields to the Boston Red Sox; the Boston Red Sox sent Chih Hsien Chiang to the Seattle Mariners; the Los Angeles Dodgers sent Trayvon Robinson to the Seattle Mariners; the Boston Red Sox sent Tim Federowicz, Juan Rodriguez and Stephen Fife to the Los Angeles Dodgers.(3 clubs) |
| Jul 22, 2010 | The Boston Red Sox purchased Jack Hannahan from the Seattle Mariners. |
| Mar 18, 2010 | The Boston Red Sox traded Casey Kotchman to the Seattle Mariners for Miguel Celestino and Bill Hall. |
| Jan 20, 2009 | The Boston Red Sox traded David Aardsma to the Seattle Mariners for Fabian Williamson. |
| Jun 6, 2003 | The Boston Red Sox traded Matt White to the Seattle Mariners for Sheldon Fulse. |
| Jul 26, 1999 | The Boston Red Sox traded Robert Ramsay to the Seattle Mariners for Butch Huskey. |
| Jul 31, 1997 | The Boston Red Sox traded Heathcliff Slocumb to the Seattle Mariners for Derek Lowe and Jason Varitek. |
| Jul 30, 1996 | The Boston Red Sox traded Jamie Moyer to the Seattle Mariners for Darren Bragg. |
| Jul 23, 1996 | The Boston Red Sox traded Jeff Manto to the Seattle Mariners for Arquimedez Pozo. |
| Mar 22, 1994 | The Boston Red Sox traded Tim Smith to the Seattle Mariners for Lee Tinsley. |
| Apr 1, 1991 | The Boston Red Sox traded Rob Murphy to the Seattle Mariners for Mike Gardiner. |
| Aug 17, 1986 | The Boston Red Sox traded Rey Quiñones, Mike Brown, Mike Trujillo and John Christensen to the Seattle Mariners for Spike Owen and Dave Henderson. |
| Apr 8, 1981 | The Boston Red Sox traded Dick Drago to the Seattle Mariners for Manny Sarmiento. |
| May 28, 1977 | The Seattle Mariners purchased Tom House from the Boston Red Sox. |
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.