Boston Red Sox vs Seattle Mariners head-to-head
Who has won more, the Boston Red Sox or the Seattle Mariners?
Boston Red Sox lead the series 156-125 in 281 meetings since Apr 20, 1993. They average 5.1 to 4.6. The last meeting was Sep 2, 2026, 8-3.
- Record
- Boston Red Sox 156-125 Seattle Mariners
- Games
- 281
- Points per game
- 5.1 – 4.6
- Biggest win
- Boston Red Sox by 14
Seattle Mariners have won the last 2 meetings.
Every meeting on file
| Sep 2, 2026 |  SEA at  BOS | 8-3 | Seattle Mariners | Regular |
| Sep 1, 2026 | SEA at BOS | 9-6 | Seattle Mariners | Regular |
| Aug 31, 2026 | SEA at BOS | 8-9 | Boston Red Sox | Regular |
| Jun 21, 2026 | BOS at SEA | 1-3 | Seattle Mariners | Regular |
| Jun 20, 2026 | BOS at SEA | 5-1 | Boston Red Sox | Regular |
| Jun 19, 2026 | BOS at SEA | 6-2 | Boston Red Sox | Regular |
| Jun 18, 2025 | BOS at SEA | 3-1 | Boston Red Sox | Regular |
| Jun 17, 2025 | BOS at SEA | 0-8 | Seattle Mariners | Regular |
| Jun 16, 2025 | BOS at SEA | 2-0 | Boston Red Sox | Regular |
| Apr 24, 2025 | SEA at BOS | 4-3 | Seattle Mariners | Regular |
| Apr 23, 2025 | SEA at BOS | 8-5 | Seattle Mariners | Regular |
| Apr 22, 2025 | SEA at BOS | 3-8 | Boston Red Sox | Regular |
| Jul 31, 2024 | SEA at BOS | 2-3 | Boston Red Sox | Regular |
| Jul 30, 2024 | SEA at BOS | 10-6 | Seattle Mariners | Regular |
| Jul 29, 2024 | SEA at BOS | 7-14 | Boston Red Sox | Regular |
| Mar 31, 2024 | BOS at SEA | 5-1 | Boston Red Sox | Regular |
| Mar 30, 2024 | BOS at SEA | 3-4 | Seattle Mariners | Regular |
| Mar 29, 2024 | BOS at SEA | 0-1 | Seattle Mariners | Regular |
| Mar 28, 2024 | BOS at SEA | 6-4 | Boston Red Sox | Regular |
| Aug 2, 2023 | BOS at SEA | 3-6 | Seattle Mariners | Regular |
| Aug 1, 2023 | BOS at SEA | 6-4 | Boston Red Sox | Regular |
| Jul 31, 2023 | BOS at SEA | 2-6 | Seattle Mariners | Regular |
| May 17, 2023 | SEA at BOS | 3-12 | Boston Red Sox | Regular |
| May 16, 2023 | SEA at BOS | 4-9 | Boston Red Sox | Regular |
| May 15, 2023 | SEA at BOS | 10-1 | Seattle Mariners | Regular |
| Jun 12, 2022 | BOS at SEA | 2-0 | Boston Red Sox | Regular |
| Jun 11, 2022 | BOS at SEA | 6-7 | Seattle Mariners | Regular |
| Jun 10, 2022 | BOS at SEA | 4-3 | Boston Red Sox | Regular |
| May 22, 2022 | SEA at BOS | 4-8 | Boston Red Sox | Regular |
| May 21, 2022 | SEA at BOS | 5-6 | Boston Red Sox | Regular |
| May 20, 2022 | SEA at BOS | 3-7 | Boston Red Sox | Regular |
| May 19, 2022 | SEA at BOS | 6-12 | Boston Red Sox | Regular |
| Sep 15, 2021 | BOS at SEA | 9-4 | Boston Red Sox | Regular |
| Sep 14, 2021 | BOS at SEA | 8-4 | Boston Red Sox | Regular |
| Sep 13, 2021 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| Apr 25, 2021 | SEA at BOS | 3-5 | Boston Red Sox | Regular |
| Apr 24, 2021 | SEA at BOS | 8-2 | Seattle Mariners | Regular |
| Apr 23, 2021 | SEA at BOS | 5-6 | Boston Red Sox | Regular |
| Apr 22, 2021 | SEA at BOS | 7-3 | Seattle Mariners | Regular |
| May 12, 2019 | SEA at BOS | 2-11 | Boston Red Sox | Regular |
| May 11, 2019 | SEA at BOS | 5-9 | Boston Red Sox | Regular |
| May 10, 2019 | SEA at BOS | 1-14 | Boston Red Sox | Regular |
| Mar 31, 2019 | BOS at SEA | 8-10 | Seattle Mariners | Regular |
| Mar 30, 2019 | BOS at SEA | 5-6 | Seattle Mariners | Regular |
| Mar 29, 2019 | BOS at SEA | 7-6 | Boston Red Sox | Regular |
| Mar 28, 2019 | BOS at SEA | 4-12 | Seattle Mariners | Regular |
| Jun 24, 2018 | SEA at BOS | 0-5 | Boston Red Sox | Regular |
| Jun 23, 2018 | SEA at BOS | 7-2 | Seattle Mariners | Regular |
| Jun 22, 2018 | SEA at BOS | 10-14 | Boston Red Sox | Regular |
| Jun 17, 2018 | BOS at SEA | 9-3 | Boston Red Sox | Regular |
| Jun 16, 2018 | BOS at SEA | 0-1 | Seattle Mariners | Regular |
| Jun 15, 2018 | BOS at SEA | 6-7 | Seattle Mariners | Regular |
| Jun 14, 2018 | BOS at SEA | 2-1 | Boston Red Sox | Regular |
| Jul 26, 2017 | BOS at SEA | 4-0 | Boston Red Sox | Regular |
| Jul 25, 2017 | BOS at SEA | 5-6 | Seattle Mariners | Regular |
| Jul 24, 2017 | BOS at SEA | 0-4 | Seattle Mariners | Regular |
| May 28, 2017 | SEA at BOS | 5-0 | Seattle Mariners | Regular |
| May 27, 2017 | SEA at BOS | 0-6 | Boston Red Sox | Regular |
| May 26, 2017 | SEA at BOS | 0-3 | Boston Red Sox | Regular |
| Aug 4, 2016 | BOS at SEA | 3-2 | Boston Red Sox | Regular |
| Aug 3, 2016 | BOS at SEA | 1-3 | Seattle Mariners | Regular |
| Aug 2, 2016 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| Aug 1, 2016 | BOS at SEA | 2-1 | Boston Red Sox | Regular |
| Jun 19, 2016 | SEA at BOS | 1-2 | Boston Red Sox | Regular |
| Jun 18, 2016 | SEA at BOS | 2-6 | Boston Red Sox | Regular |
| Jun 17, 2016 | SEA at BOS | 8-4 | Seattle Mariners | Regular |
| Aug 16, 2015 | SEA at BOS | 10-8 | Seattle Mariners | Regular |
| Aug 15, 2015 | SEA at BOS | 10-22 | Boston Red Sox | Regular |
| Aug 14, 2015 | SEA at BOS | 1-15 | Boston Red Sox | Regular |
| May 17, 2015 | BOS at SEA | 0-5 | Seattle Mariners | Regular |
| May 16, 2015 | BOS at SEA | 4-2 | Boston Red Sox | Regular |
| May 15, 2015 | BOS at SEA | 1-2 | Seattle Mariners | Regular |
| May 14, 2015 | BOS at SEA | 2-1 | Boston Red Sox | Regular |
| Aug 24, 2014 | SEA at BOS | 8-6 | Seattle Mariners | Regular |
| Aug 23, 2014 | SEA at BOS | 7-3 | Seattle Mariners | Regular |
| Aug 22, 2014 | SEA at BOS | 5-3 | Seattle Mariners | Regular |
| Jun 25, 2014 | BOS at SEA | 5-4 | Boston Red Sox | Regular |
| Jun 24, 2014 | BOS at SEA | 2-8 | Seattle Mariners | Regular |
| Jun 23, 2014 | BOS at SEA | 3-12 | Seattle Mariners | Regular |
| Aug 1, 2013 | SEA at BOS | 7-8 | Boston Red Sox | Regular |
| Jul 31, 2013 | SEA at BOS | 4-5 | Boston Red Sox | Regular |
| Jul 30, 2013 | SEA at BOS | 2-8 | Boston Red Sox | Regular |
| Jul 11, 2013 | BOS at SEA | 8-7 | Boston Red Sox | Regular |
| Jul 10, 2013 | BOS at SEA | 11-4 | Boston Red Sox | Regular |
| Jul 9, 2013 | BOS at SEA | 11-8 | Boston Red Sox | Regular |
| Jul 8, 2013 | BOS at SEA | 4-11 | Seattle Mariners | Regular |
| Sep 5, 2012 | BOS at SEA | 1-2 | Seattle Mariners | Regular |
| Sep 4, 2012 | BOS at SEA | 4-3 | Boston Red Sox | Regular |
| Sep 3, 2012 | BOS at SEA | 1-4 | Seattle Mariners | Regular |
| Jul 1, 2012 | BOS at SEA | 2-1 | Boston Red Sox | Regular |
| Jun 30, 2012 | BOS at SEA | 2-3 | Seattle Mariners | Regular |
| Jun 29, 2012 | BOS at SEA | 5-0 | Boston Red Sox | Regular |
| Jun 28, 2012 | BOS at SEA | 0-1 | Seattle Mariners | Regular |
| May 15, 2012 | SEA at BOS | 0-5 | Boston Red Sox | Regular |
| May 14, 2012 | SEA at BOS | 1-6 | Boston Red Sox | Regular |
| Aug 14, 2011 | BOS at SEA | 3-5 | Seattle Mariners | Regular |
| Aug 13, 2011 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| Aug 12, 2011 | BOS at SEA | 6-4 | Boston Red Sox | Regular |
| Jul 24, 2011 | SEA at BOS | 8-12 | Boston Red Sox | Regular |
| Jul 23, 2011 | SEA at BOS | 1-3 | Boston Red Sox | Regular |
| Jul 22, 2011 | SEA at BOS | 4-7 | Boston Red Sox | Regular |
| May 1, 2011 | SEA at BOS | 2-3 | Boston Red Sox | Regular |
| Apr 30, 2011 | SEA at BOS | 2-0 | Seattle Mariners | Regular |
| Apr 29, 2011 | SEA at BOS | 5-4 | Seattle Mariners | Regular |
| Sep 15, 2010 | BOS at SEA | 5-1 | Boston Red Sox | Regular |
| Sep 14, 2010 | BOS at SEA | 9-6 | Boston Red Sox | Regular |
| Sep 13, 2010 | BOS at SEA | 5-1 | Boston Red Sox | Regular |
| Aug 25, 2010 | SEA at BOS | 4-2 | Seattle Mariners | Regular |
| Aug 25, 2010 | SEA at BOS | 3-5 | Boston Red Sox | Regular |
| Aug 23, 2010 | SEA at BOS | 3-6 | Boston Red Sox | Regular |
| Jul 25, 2010 | BOS at SEA | 2-4 | Seattle Mariners | Regular |
| Jul 24, 2010 | BOS at SEA | 1-5 | Seattle Mariners | Regular |
| Jul 23, 2010 | BOS at SEA | 2-1 | Boston Red Sox | Regular |
| Jul 22, 2010 | BOS at SEA | 8-6 | Boston Red Sox | Regular |
| Jul 5, 2009 | SEA at BOS | 4-8 | Boston Red Sox | Regular |
| Jul 4, 2009 | SEA at BOS | 3-2 | Seattle Mariners | Regular |
| Jul 3, 2009 | SEA at BOS | 7-6 | Seattle Mariners | Regular |
| May 17, 2009 | BOS at SEA | 2-3 | Seattle Mariners | Regular |
| May 16, 2009 | BOS at SEA | 5-3 | Boston Red Sox | Regular |
| May 15, 2009 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| Jul 23, 2008 | BOS at SEA | 6-3 | Boston Red Sox | Regular |
| Jul 22, 2008 | BOS at SEA | 4-2 | Boston Red Sox | Regular |
| Jul 21, 2008 | BOS at SEA | 4-0 | Boston Red Sox | Regular |
| Jun 8, 2008 | SEA at BOS | 1-2 | Boston Red Sox | Regular |
| Jun 7, 2008 | SEA at BOS | 3-11 | Boston Red Sox | Regular |
| Jun 6, 2008 | SEA at BOS | 8-0 | Seattle Mariners | Regular |
| May 28, 2008 | BOS at SEA | 0-1 | Seattle Mariners | Regular |
| May 27, 2008 | BOS at SEA | 3-4 | Seattle Mariners | Regular |
| May 26, 2008 | BOS at SEA | 5-3 | Boston Red Sox | Regular |
| Aug 5, 2007 | BOS at SEA | 9-2 | Boston Red Sox | Regular |
| Aug 4, 2007 | BOS at SEA | 4-3 | Boston Red Sox | Regular |
| Aug 3, 2007 | BOS at SEA | 4-7 | Seattle Mariners | Regular |
| Jun 27, 2007 | BOS at SEA | 1-2 | Seattle Mariners | Regular |
| Jun 26, 2007 | BOS at SEA | 7-8 | Seattle Mariners | Regular |
| Jun 25, 2007 | BOS at SEA | 4-9 | Seattle Mariners | Regular |
| May 3, 2007 | SEA at BOS | 7-8 | Boston Red Sox | Regular |
| Apr 11, 2007 | SEA at BOS | 3-0 | Seattle Mariners | Regular |
| Apr 10, 2007 | SEA at BOS | 3-14 | Boston Red Sox | Regular |
| Aug 27, 2006 | BOS at SEA | 3-6 | Seattle Mariners | Regular |
| Aug 26, 2006 | BOS at SEA | 3-4 | Seattle Mariners | Regular |
| Aug 25, 2006 | BOS at SEA | 0-6 | Seattle Mariners | Regular |
| Jul 23, 2006 | BOS at SEA | 8-9 | Seattle Mariners | Regular |
| Jul 22, 2006 | BOS at SEA | 2-5 | Seattle Mariners | Regular |
| Jul 21, 2006 | BOS at SEA | 9-4 | Boston Red Sox | Regular |
| Apr 17, 2006 | SEA at BOS | 6-7 | Boston Red Sox | Regular |
| Apr 16, 2006 | SEA at BOS | 2-3 | Boston Red Sox | Regular |
| Apr 15, 2006 | SEA at BOS | 3-0 | Seattle Mariners | Regular |
| Apr 14, 2006 | SEA at BOS | 1-2 | Boston Red Sox | Regular |
| May 15, 2005 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| May 14, 2005 | BOS at SEA | 6-3 | Boston Red Sox | Regular |
| May 13, 2005 | BOS at SEA | 7-14 | Seattle Mariners | Regular |
| May 8, 2005 | SEA at BOS | 6-4 | Seattle Mariners | Regular |
| May 8, 2005 | SEA at BOS | 3-6 | Boston Red Sox | Regular |
| May 6, 2005 | SEA at BOS | 2-7 | Boston Red Sox | Regular |
| Sep 12, 2004 | BOS at SEA | 0-2 | Seattle Mariners | Regular |
| Sep 11, 2004 | BOS at SEA | 9-0 | Boston Red Sox | Regular |
| Sep 10, 2004 | BOS at SEA | 13-2 | Boston Red Sox | Regular |
| Sep 9, 2004 | BOS at SEA | 1-7 | Seattle Mariners | Regular |
| Jul 20, 2004 | BOS at SEA | 9-7 | Boston Red Sox | Regular |
| Jul 19, 2004 | BOS at SEA | 4-8 | Seattle Mariners | Regular |
| May 30, 2004 | SEA at BOS | 7-9 | Boston Red Sox | Regular |
| May 29, 2004 | SEA at BOS | 5-4 | Seattle Mariners | Regular |
| May 28, 2004 | SEA at BOS | 4-8 | Boston Red Sox | Regular |
| Aug 25, 2003 | SEA at BOS | 1-8 | Boston Red Sox | Regular |
| Aug 24, 2003 | SEA at BOS | 1-6 | Boston Red Sox | Regular |
| Aug 23, 2003 | SEA at BOS | 6-7 | Boston Red Sox | Regular |
| Aug 22, 2003 | SEA at BOS | 4-6 | Boston Red Sox | Regular |
| Aug 17, 2003 | BOS at SEA | 1-3 | Seattle Mariners | Regular |
| Aug 16, 2003 | BOS at SEA | 5-1 | Boston Red Sox | Regular |
| Aug 15, 2003 | BOS at SEA | 5-10 | Seattle Mariners | Regular |
| Aug 15, 2002 | BOS at SEA | 3-4 | Seattle Mariners | Regular |
| Aug 14, 2002 | BOS at SEA | 12-5 | Boston Red Sox | Regular |
| Aug 13, 2002 | BOS at SEA | 3-10 | Seattle Mariners | Regular |
| May 19, 2002 | SEA at BOS | 2-3 | Boston Red Sox | Regular |
| May 18, 2002 | SEA at BOS | 1-4 | Boston Red Sox | Regular |
| May 17, 2002 | SEA at BOS | 6-3 | Seattle Mariners | Regular |
| May 12, 2002 | BOS at SEA | 10-4 | Boston Red Sox | Regular |
| May 11, 2002 | BOS at SEA | 1-3 | Seattle Mariners | Regular |
| May 10, 2002 | BOS at SEA | 2-7 | Seattle Mariners | Regular |
| Aug 16, 2001 | SEA at BOS | 4-6 | Boston Red Sox | Regular |
| Aug 15, 2001 | SEA at BOS | 6-2 | Seattle Mariners | Regular |
| Aug 14, 2001 | SEA at BOS | 6-3 | Seattle Mariners | Regular |
| May 10, 2001 | SEA at BOS | 5-2 | Seattle Mariners | Regular |
| May 9, 2001 | SEA at BOS | 10-5 | Seattle Mariners | Regular |
| May 8, 2001 | SEA at BOS | 4-12 | Boston Red Sox | Regular |
| May 3, 2001 | BOS at SEA | 3-10 | Seattle Mariners | Regular |
| May 2, 2001 | BOS at SEA | 1-5 | Seattle Mariners | Regular |
| May 1, 2001 | BOS at SEA | 2-0 | Boston Red Sox | Regular |
| Sep 4, 2000 | SEA at BOS | 1-5 | Boston Red Sox | Regular |
| Sep 3, 2000 | SEA at BOS | 5-0 | Seattle Mariners | Regular |
| Sep 2, 2000 | SEA at BOS | 4-1 | Seattle Mariners | Regular |
| Sep 1, 2000 | SEA at BOS | 2-6 | Boston Red Sox | Regular |
| Aug 2, 2000 | BOS at SEA | 5-2 | Boston Red Sox | Regular |
| Aug 1, 2000 | BOS at SEA | 4-5 | Seattle Mariners | Regular |
| Jul 31, 2000 | BOS at SEA | 8-5 | Boston Red Sox | Regular |
| Apr 6, 2000 | BOS at SEA | 2-5 | Seattle Mariners | Regular |
| Apr 5, 2000 | BOS at SEA | 3-9 | Seattle Mariners | Regular |
| Apr 4, 2000 | BOS at SEA | 2-0 | Boston Red Sox | Regular |
| Sep 6, 1999 | BOS at SEA | 3-2 | Boston Red Sox | Regular |
| Sep 5, 1999 | BOS at SEA | 9-7 | Boston Red Sox | Regular |
Completed games on file, which start in 1993 — not the clubs’ full all-time series. Regular season 281, postseason 0.