Seattle Mariners 2021 Schedule

2021 · 78-70 overall · 33-28 ATS · 148 games

The Seattle Mariners are 78-70 in 2021 across 148 games, going 33-28 against the spread (54% cover rate). Closing lines from DraftKings, FanDuel, and BetMGM, graded against official MLB box scores.

See methodology.

Date	Opponent	Score	ATS	ML	O/U
2021-10-03	vs Angels	L 3-7	✗	L	O
2021-10-02	vs Angels	W 6-4	✓	W	O
2021-10-01	vs Angels	L 1-2	✗	L	U
2021-09-28	vs Athletics	W 4-2	✓	W	U
2021-09-27	vs Athletics	W 13-4	✓	W	O
2021-09-26	@ Angels	W 1-5	✓	W	U
2021-09-25	@ Angels	L 14-1	✗	L	O
2021-09-24	@ Angels	W 5-6	✗	W	O
2021-09-23	@ Athletics	W 5-6	✓	W	O
2021-09-22	@ Athletics	W 1-4	✓	W	U
2021-09-21	@ Athletics	W 2-5	✓	W	U
2021-09-20	@ Athletics	W 2-4	✓	W	U
2021-09-19	@ Royals	W 1-7	✓	W	U
2021-09-18	@ Royals	L 8-1	✗	L	P
2021-09-17	@ Royals	W 2-6	✓	W	U
2021-09-15	vs Red Sox	L 4-9	✗	L	O
2021-09-14	vs Red Sox	L 4-8	✗	L	O
2021-09-13	vs Red Sox	W 5-4	✓	W	O
2021-09-12	vs Diamondbacks	L 4-5	✗	L	O
2021-09-11	vs Diamondbacks	L 3-7	✗	L	O
2021-09-10	vs Diamondbacks	W 5-4	✗	W	O
2021-09-08	@ Astros	W 5-8	✓	W	O
2021-09-07	@ Astros	L 5-4	✓	L	O
2021-09-06	@ Astros	L 11-2	✗	L	O
2021-09-05	@ Diamondbacks	W 4-10	✓	W	O
2021-09-04	@ Diamondbacks	W 5-8	✓	W	O
2021-09-03	@ Diamondbacks	W 5-6	✗	W	O
2021-08-31	vs Astros	W 4-0	✓	W	U
2021-08-30	vs Astros	L 3-4	✓	L	U
2021-08-29	vs Royals	W 4-3	✗	W	U
2021-08-28	vs Royals	L 2-4	✗	L	U
2021-08-27	vs Royals	L 7-8	✗	L	O
2021-08-26	vs Royals	L 4-6	✗	L	O
2021-08-24	@ Athletics	W 1-5	✓	W	U
2021-08-23	@ Athletics	W 3-5	✓	W	U
2021-08-22	@ Astros	W 3-6	✓	W	P
2021-08-21	@ Astros	L 15-1	✗	L	O
2021-08-20	@ Astros	L 12-3	✗	L	O
2021-08-19	@ Rangers	W 8-9	✗	W	O
2021-08-17	@ Rangers	W 1-3	✓	W	U
2021-08-15	vs Blue Jays	L 3-8	✗	L	O
2021-08-14	vs Blue Jays	W 9-3	✓	W	O
2021-08-13	vs Blue Jays	W 3-2	✓	W	U
2021-08-12	vs Rangers	W 3-1	✓	W	U
2021-08-11	vs Rangers	W 2-1	✗	W	U
2021-08-10	vs Rangers	L 4-5	✗	L	O
2021-08-08	@ Yankees	W 0-2	✓	W	U
2021-08-07	@ Yankees	L 5-4	✓	L	U
2021-08-06	@ Yankees	L 3-2	✓	L	U
2021-08-05	@ Yankees	L 5-3	✗	L	U
2021-07-31	@ Rangers	L 5-4	✗	L	O
2021-07-30	@ Rangers	W 5-9	✓	W	O
2021-07-28	vs Astros	L 4-11	✗	L	O
2021-07-27	vs Astros	L 6-8	✗	L	O
2021-07-26	vs Astros	W 11-8	✓	W	O
2021-07-24	vs Athletics	W 5-4	✓	W	O
2021-07-23	vs Athletics	W 4-3	✓	W	U
2021-07-22	vs Athletics	L 1-4	✗	L	U
2021-07-21	@ Rockies	L 6-3	✗	L	U
2021-07-20	@ Rockies	W 4-6	✓	W	U
2021-07-18	@ Angels	W 4-7	✓	W	O
2021-07-17	@ Angels	L 9-4	—	L	—
2021-07-16	@ Angels	W 5-6	—	—	—
2021-07-11	vs Angels	L 1-7	—	L	—
2021-07-10	vs Angels	W 2-0	—	W	—
2021-07-09	vs Angels	W 7-3	—	W	—
2021-07-08	vs Yankees	W 4-0	—	W	—
2021-07-07	vs Yankees	L 4-5	—	L	—
2021-07-06	vs Yankees	L 1-12	—	L	—
2021-07-04	vs Rangers	W 4-1	—	W	—
2021-07-03	vs Rangers	L 3-7	—	L	—
2021-07-02	vs Rangers	W 5-4	—	W	—
2021-06-30	@ Blue Jays	W 7-9	—	W	—
2021-06-29	@ Blue Jays	L 9-3	—	L	—
2021-06-27	@ White Sox	L 7-5	—	L	—
2021-06-26	@ White Sox	W 2-3	—	W	—
2021-06-25	@ White Sox	W 3-9	—	W	—
2021-06-23	vs Rockies	L 2-5	—	L	—
2021-06-22	vs Rockies	W 2-1	—	W	—
2021-06-20	vs Rays	W 6-2	—	W	—
2021-06-18	vs Rays	W 5-1	—	W	—
2021-06-17	vs Rays	W 6-5	—	W	—
2021-06-16	vs Twins	L 2-7	—	L	—
2021-06-15	vs Twins	W 10-0	—	W	—
2021-06-14	vs Twins	W 4-3	—	W	—
2021-06-13	@ Indians	W 2-6	—	W	—
2021-06-12	@ Indians	L 5-4	—	L	—
2021-06-11	@ Indians	L 7-0	—	L	—
2021-06-10	@ Tigers	L 8-3	—	L	—
2021-06-09	@ Tigers	W 6-9	—	W	—
2021-06-08	@ Tigers	L 5-3	—	L	—
2021-06-06	@ Angels	W 5-9	—	W	—
2021-06-05	@ Angels	L 12-5	—	L	—
2021-06-04	@ Angels	L 3-2	—	L	—
2021-06-03	@ Angels	W 2-6	—	W	—
2021-06-02	vs Athletics	L 0-6	—	L	—
2021-06-01	vs Athletics	L 6-12	—	L	—
2021-05-31	vs Athletics	W 6-5	—	W	—
2021-05-30	vs Rangers	W 4-2	—	W	—
2021-05-28	vs Rangers	W 3-2	—	W	—
2021-05-27	vs Rangers	W 5-0	—	W	—
2021-05-26	@ Athletics	L 6-3	—	L	—
2021-05-25	@ Athletics	W 3-4	—	W	—
2021-05-24	@ Athletics	W 2-4	—	W	—
2021-05-23	@ Padres	L 9-2	—	L	—
2021-05-22	@ Padres	L 6-4	—	L	—
2021-05-21	@ Padres	L 16-1	—	L	—
2021-05-19	vs Tigers	L 2-6	—	L	—
2021-05-18	vs Tigers	L 0-5	—	L	—
2021-05-17	vs Tigers	L 1-4	—	L	—
2021-05-16	vs Indians	W 3-2	—	W	—
2021-05-14	vs Indians	W 7-3	—	W	—
2021-05-13	vs Indians	L 2-4	—	L	—
2021-05-12	@ Dodgers	L 7-1	—	L	—
2021-05-11	@ Dodgers	L 6-4	—	L	—
2021-05-09	@ Rangers	L 10-2	—	L	—
2021-05-08	@ Rangers	L 9-8	—	L	—
2021-05-07	@ Rangers	W 4-5	—	W	—
2021-05-05	vs Orioles	L 0-6	—	L	—
2021-05-04	vs Orioles	W 5-2	—	W	—
2021-05-03	vs Orioles	L 3-5	—	L	—
2021-05-02	vs Angels	W 2-0	—	W	—
2021-05-01	vs Angels	L 5-10	—	L	—
2021-04-30	vs Angels	W 7-4	—	W	—
2021-04-29	@ Astros	W 0-1	—	W	—
2021-04-28	@ Astros	L 7-5	—	L	—
2021-04-27	@ Astros	L 2-0	—	L	—
2021-04-26	@ Astros	L 5-2	—	L	—
2021-04-25	@ Red Sox	L 5-3	—	L	—
2021-04-24	@ Red Sox	W 2-8	—	W	—
2021-04-23	@ Red Sox	L 6-5	—	L	—
2021-04-22	@ Red Sox	W 3-7	—	W	—
2021-04-20	vs Dodgers	L 0-1	—	L	—
2021-04-19	vs Dodgers	W 4-3	—	W	—
2021-04-18	vs Astros	W 7-2	—	W	—
2021-04-17	vs Astros	L 0-1	—	L	—
2021-04-16	vs Astros	W 6-5	—	W	—
2021-04-15	@ Orioles	W 1-2	—	W	—
2021-04-13	@ Orioles	L 7-6	—	L	—
2021-04-11	@ Twins	W 6-8	—	W	—
2021-04-10	@ Twins	W 3-4	—	W	—
2021-04-08	@ Twins	L 10-2	—	—	—
2021-04-07	vs White Sox	W 8-4	—	—	—
2021-04-06	vs White Sox	L 4-10	—	—	—
2021-04-05	vs White Sox	L 0-6	—	—	—
2021-04-03	vs Giants	W 4-0	—	—	—
2021-04-02	vs Giants	L 3-6	—	—	—
2021-04-01	vs Giants	W 8-7	—	—	—