Players who played for the Boston Red Sox and Seattle Mariners
87 players
87 players have played for both the Boston Red Sox and the Seattle Mariners. James Paxton spent the most seasons with the two: 2 with the Boston Red Sox and 7 with the Seattle Mariners. On a roster now: Eduard Bazardo, Brennan Bernardino, Yohan Ramirez, and Cooper Criswell. Every season since 1876 is on file.
| Player | Pos | BOS | SEA |
|---|---|---|---|
| James Paxton | SP | 2023–2024 · 2 seasons | 2013–2021 · 7 seasons |
| John Marzano | C | 1987–1992 · 6 seasons | 1996–1998 · 3 seasons |
| Joel Pineiro | SP | 2007 · 1 season | 2000–2006 · 7 seasons |
| Aaron Sele | RP | 1993–1997 · 5 seasons | 2000–2005 · 3 seasons |
| Roenis Elias | RP | 2016–2017 · 2 seasons | 2014–2022 · 5 seasons |
| Mike Timlin | RP | 2003–2008 · 6 seasons | 1998 · 1 season |
| Bill Haselman | C | 1995–2003 · 4 seasons | 1992–1994 · 3 seasons |
| Erik Hanson | SP | 1995 · 1 season | 1988–1993 · 6 seasons |
| Scott Bankhead | RP | 1993–1994 · 2 seasons | 1987–1991 · 5 seasons |
| Matt Young | RP | 1991–1992 · 2 seasons | 1983–1990 · 5 seasons |
| Eduard Bazardo | RP | 2021–2022 · 2 seasons | 2023–2026 · 4 seasons |
| Erasmo Ramirez | RP | 2019 · 1 season | 2012–2018 · 5 seasons |
| Mike Carp | 1B | 2013–2014 · 2 seasons | 2009–2012 · 4 seasons |
| Mike Cameron | CF | 2010–2011 · 2 seasons | 2000–2003 · 4 seasons |
| Adrian Beltre | 3B | 2010 · 1 season | 2005–2009 · 5 seasons |
| John Olerud | 1B | 2005 · 1 season | 2000–2004 · 5 seasons |
| Reggie Jefferson | DH | 1995–1999 · 5 seasons | 1994 · 1 season |
| Dick Drago | RP | 1974–1980 · 5 seasons | 1981 · 1 season |
| Dick Pole | P | 1973–1976 · 4 seasons | 1977–1978 · 2 seasons |
| Rob Refsnyder | DH | 2022–2025 · 4 seasons | 2026 · 1 season |
| Carson Smith | RP | 2016–2018 · 3 seasons | 2014–2015 · 2 seasons |
| Scott Atchison | RP | 2010–2012 · 3 seasons | 2004–2005 · 2 seasons |
| John Halama | SP | 2005 · 1 season | 1999–2002 · 4 seasons |
| Spike Owen | 3B | 1987–1988 · 2 seasons | 1983–1985 · 3 seasons |
| Mike Brown | RP | 1982–1985 · 4 seasons | 1987 · 1 season |
| Juan Beniquez | LF | 1971–1975 · 4 seasons | 1980 · 1 season |
| Brennan Bernardino | RP | 2023–2025 · 3 seasons | 2022 · 1 season |
| Yohan Ramirez | RP | 2024 · 1 season | 2020–2022 · 3 seasons |
| Doug Fister | SP | 2017 · 1 season | 2009–2011 · 3 seasons |
| Carlos Peguero | RF | 2015 · 1 season | 2011–2013 · 3 seasons |
| Guillermo Quiroz | C | 2012 · 1 season | 2006–2010 · 3 seasons |
| David Pauley | RP | 2006–2008 · 2 seasons | 2010–2011 · 2 seasons |
| Erik Bedard | SP | 2011 · 1 season | 2008–2011 · 3 seasons |
| Dave McCarty | 1B | 2003–2005 · 3 seasons | 1998 · 1 season |
| Bob Wolcott | RP | 1999 · 1 season | 1995–1997 · 3 seasons |
| Darren Bragg | LF | 1997–1998 · 2 seasons | 1994–1995 · 2 seasons |
| Lee Tinsley | LF | 1994–1995 · 2 seasons | 1993–1997 · 2 seasons |
| Cooper Criswell | RP | 2024–2025 · 2 seasons | 2026 · 1 season |
| Abraham Almonte | OF | 2022 · 1 season | 2013–2014 · 2 seasons |
| Jason Bay | LF | 2008–2009 · 2 seasons | 2013 · 1 season |
| Kelly Shoppach | C | 2005–2012 · 2 seasons | 2013 · 1 season |
| Matt Thornton | RP | 2013 · 1 season | 2004–2005 · 2 seasons |
| Scott Podsednik | LF | 2012 · 1 season | 2001–2002 · 2 seasons |
| Josh Bard | C | 2006 · 1 season | 2010–2011 · 2 seasons |
| Wily Mo Pena | LF | 2006–2007 · 2 seasons | 2011 · 1 season |
| Chris Woodward | 1B | 2009 · 1 season | 2009–2010 · 2 seasons |
| David Aardsma | RP | 2008 · 1 season | 2009–2010 · 2 seasons |
| Carl Everett | DH | 2000–2001 · 2 seasons | 2006 · 1 season |
| Mike Myers | RP | 2004–2005 · 2 seasons | 2004 · 1 season |
| Andy Sheets | 2B | 2000 · 1 season | 1996–1997 · 2 seasons |
| Jeff Fassero | RP | 2000 · 1 season | 1997–1998 · 2 seasons |
| Butch Henry | SP | 1997–1998 · 2 seasons | 1999 · 1 season |
| Arquimedez Pozo | 3B | 1996–1997 · 2 seasons | 1995 · 1 season |
| Jose Melendez | RP | 1993–1994 · 2 seasons | 1990 · 1 season |
| A. Mike Brumley | LF | 1991–1992 · 2 seasons | 1990 · 1 season |
| Mike Gardiner | RP | 1991–1992 · 2 seasons | 1990 · 1 season |
| Rob Murphy | RP | 1989–1990 · 2 seasons | 1991 · 1 season |
| Rick Jones | P | 1976 · 1 season | 1977–1978 · 2 seasons |
| Diego Segui | P | 1974–1975 · 2 seasons | 1977 · 1 season |
| Justin Turner | 1B | 2023 · 1 season | 2024 · 1 season |
| Tayler Scott | RP | 2023 · 1 season | 2019 · 1 season |
| Ryan Cook | RP | 2015 · 1 season | 2018 · 1 season |
| Danny Valencia | 3B | 2012 · 1 season | 2017 · 1 season |
| Jean Machi | RP | 2015 · 1 season | 2017 · 1 season |
| Wade Miley | SP | 2015 · 1 season | 2016 · 1 season |
| Anthony Varvaro | RP | 2015 · 1 season | 2010 · 1 season |
| Justin Thomas | RP | 2012 · 1 season | 2008 · 1 season |
| Randy Williams | RP | 2011 · 1 season | 2004 · 1 season |
| Bill Hall | 3B | 2010 · 1 season | 2009 · 1 season |
| Casey Kotchman | 1B | 2009 · 1 season | 2010 · 1 season |
| Nick Green | SS | 2009 · 1 season | 2007 · 1 season |
| Kevin Jarvis | RP | 2006 · 1 season | 2004 · 1 season |
| Roberto Petagine | 1B | 2005 · 1 season | 2006 · 1 season |
| Ramon Vazquez | SS | 2005 · 1 season | 2001 · 1 season |
| Matt White | P | 2003 · 1 season | 2003 · 1 season |
| Rey Sanchez | 2B | 2002 · 1 season | 2003 · 1 season |
| Steve Ontiveros | RP | 2000 · 1 season | 1993 · 1 season |
| Heathcliff Slocumb | RP | 1996 · 1 season | 1998 · 1 season |
| Keith Mitchell | DH | 1998 · 1 season | 1994 · 1 season |
| Josias Manzanillo | RP | 1991 · 1 season | 1997 · 1 season |
| Mike Maddux | RP | 1996 · 1 season | 1997 · 1 season |
| Brent Knackert | RP | 1996 · 1 season | 1990 · 1 season |
| Eric Gunderson | RP | 1996 · 1 season | 1992 · 1 season |
| Greg Litton | 2B | 1994 · 1 season | 1993 · 1 season |
| Mike Trujillo | SP | 1985 · 1 season | 1987 · 1 season |
| Ted Cox | 3B | 1977 · 1 season | 1980 · 1 season |
| Tom House | P | 1976 · 1 season | 1978 · 1 season |
Regular season, under every name each club has played as. A season split by a trade counts for both clubs where the game logs reach it (NBA from 1993-94, NFL 1994, NHL 1996, MLB 2001). Longest stay with the two first.