Boston Red Sox versus Seattle Mariners Head-to-head history

Scores, recaps and recorded betting results from the five most recent meetings in SportsJaw history. Seattle Mariners have won the last 2 meetings against the Boston Red Sox. The latest result was the Seattle Mariners' 8-3 win on September 2, 2026.

SportsJaw’s stored game records date back to 2015. The news feed shows up to the five most recent completed meetings.

Head-to-head history

Last five meetings

Recent game recaps, recorded odds and betting results

Sept 2, 2026	Score	Moneyline	Run line	Game total
Seattle MarinersSEA	8	+128 W	+1.5 (-172) W	O 8.5 (-110) W U 8.5 (-110) L
Boston Red SoxBOS	3	-145 L	-1.5 (+146) L	O 8.5 (-110) W U 8.5 (-110) L

Seattle Mariners defeated Boston Red Sox 8-3

Seattle Mariners defeated Boston Red Sox 8-3 on September 2, 2026, a 5-run decision in the series. Seattle Mariners' strongest period was the 3rd inning, when it outscored its opponent 4-0. Against SportsJaw's recorded Seattle Mariners +1.5 (-172) spread, Seattle Mariners covered, while the 11 combined runs finished over the recorded total of 8.5.

Team	1	2	3	4	5	6	7	8	9	T
SEA	0	0	4	0	0	4	0	0	0	8
BOS	0	0	0	1	0	0	2	0	0	3

Sept 1, 2026	Score	Moneyline	Run line	Game total
Seattle MarinersSEA	9	+102 W	+1.5 (-210) W	O 7 (-110) W U 7 (-110) L
Boston Red SoxBOS	6	-118 L	-1.5 (+178) L	O 7 (-110) W U 7 (-110) L

Seattle Mariners defeated Boston Red Sox 9-6

Seattle Mariners defeated Boston Red Sox 9-6 on September 1, 2026, a 3-run decision in the series. Seattle Mariners' strongest period was the 2nd inning, when it outscored its opponent 5-0. Against SportsJaw's recorded Seattle Mariners +1.5 (-210) spread, Seattle Mariners covered, while the 15 combined runs finished over the recorded total of 7.

Team	1	2	3	4	5	6	7	8	9	T
SEA	1	5	1	1	1	0	0	0	0	9
BOS	1	0	0	0	0	1	2	0	2	6

Aug 31, 2026	Score	Moneyline	Run line	Game total
Seattle MarinersSEA	8	+137 L	+1.5 (-163) W	O 7.5 (-110) W U 7.5 (-110) L
Boston Red SoxBOS	9	-151 W	-1.5 (+141) L	O 7.5 (-110) W U 7.5 (-110) L

Boston Red Sox defeated Seattle Mariners 9-8

Boston Red Sox defeated Seattle Mariners 9-8 on August 31, 2026, a 1-run decision in the series. Boston Red Sox's strongest period was the 2nd inning, when it outscored its opponent 2-0. Against SportsJaw's recorded Seattle Mariners +1.5 (-163) spread, Seattle Mariners covered, while the 17 combined runs finished over the recorded total of 7.5.

Team	1	2	3	4	5	6	7	8	9	10	T
SEA	1	0	1	0	1	4	1	0	0	0	8
BOS	1	2	0	0	2	0	0	2	1	1	9

Jun 21, 2026	Score	Moneyline	Run line	Game total
Boston Red SoxBOS	1	+112 L	+1.5 (-205) L	O 6.5 (-110) L U 6.5 (-110) W
Seattle MarinersSEA	3	-131 W	-1.5 (+175) W	O 6.5 (-110) L U 6.5 (-110) W

Jun 20, 2026	Score	Moneyline	Run line	Game total
Boston Red SoxBOS	5	+108 W	+1.5 (-204) W	O 7 (-110) L U 7 (-110) W
Seattle MarinersSEA	1	-126 L	-1.5 (+174) L	O 7 (-110) L U 7 (-110) W