The Seattle Mariners allowed their most runs in a game versus the Red Sox on August 15, 2015, with 22 runs.

Interpreted as:

most mariners runs allowed in a regular-season game

	TEAM	R	DATE	TM		OPP	RESULT	ERA	SO	SHO	SV	IP	H	ER	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Mariners	22	8/15/2015	SEA	@	BOS	L 10-22	22.50	3	0	0	8.0	26	20	4	6	1	0	57	1	3.38	6.75	0.50	4.50	5.3	10.5	4.00	.512	24.75	29.25
2	Mariners	21	9/8/2019	SEA	@	HOU	L 1-21	19.13	8	0	0	8.0	22	17	2	7	1	0	55	0	9.00	7.88	1.14	2.25	14.5	12.7	3.63	.541	23.63	24.75
3	Mariners	20	6/13/2017	SEA	@	MIN	L 7-20	21.38	4	0	0	8.0	28	19	5	2	0	0	51	0	4.50	2.25	2.00	5.63	7.8	3.9	3.75	.575	22.50	31.50
4	Mariners	20	4/17/1993	SEA	@	DET	L 3-20	22.50	7	0	0	8.0	20	20	2	10	1	1	54	1	7.88	11.25	0.70	2.25	13.0	18.5	3.75	.529	22.50	22.50
5	Mariners	19	4/25/2017	SEA	@	DET	L 9-19	21.38	5	0	0	8.0	24	19	4	7	0	1	55	1	5.63	7.88	0.71	4.50	9.1	12.7	3.88	.513	21.38	27.00
6	Mariners	19	8/9/2000	SEA	@	CWS	L 3-19	18.00	4	0	0	8.0	24	16	4	5	0	0	53	3	4.50	5.63	0.80	4.50	7.5	9.4	3.63	.500	21.38	27.00
7	Mariners	19	6/26/1983	SEA	vs	TOR	L 7-19	18.00	6	0	0	9.0	21	18	4	9	1	0	57	1	6.00	9.00	0.67	4.00	10.5	15.8	3.33	.459	19.00	21.00
8	Mariners	18	5/18/2019	SEA	vs	MIN	L 4-18	17.00	5	0	0	9.0	19	17	6	6	0	0	53	0	5.00	6.00	0.83	6.00	9.4	11.3	2.78	.361	18.00	19.00
9	Mariners	18	7/16/2004	SEA	vs	CLE	L 6-18	18.00	5	0	0	9.0	21	18	8	5	3	0	55	0	5.00	5.00	1.00	8.00	9.1	9.1	2.89	.382	18.00	21.00
10	Mariners	18	4/18/2000	SEA	@	CWS	L 11-18	20.25	5	0	0	8.0	19	18	3	8	1	1	51	0	5.63	9.00	0.63	3.38	9.8	15.7	3.38	.471	20.25	21.38
11	Mariners	18	5/21/1997	SEA	@	ANA	L 3-18	18.00	4	0	0	8.0	21	16	3	7	0	0	54	0	4.50	7.88	0.57	3.38	7.4	13.0	3.50	.450	20.25	23.63
12	Mariners	18	4/15/1979	SEA	vs	MIN	L 6-18	11.00	5	0	0	9.0	20	11	3	7	0	0	55	0	5.00	7.00	0.71	3.00	9.1	12.7	3.00	.425	18.00	20.00
13	Mariners	17	7/3/2007	SEA	@	KCR	L 3-17	15.75	4	0	0	8.0	16	14	2	4	3	0	49	1	4.50	4.50	1.00	2.25	8.2	8.2	2.50	.389	19.13	18.00
14	Mariners	17	5/1/1998	SEA	vs	DET	L 3-17	15.00	6	0	0	9.0	20	15	2	2	3	0	51	0	6.00	2.00	3.00	2.00	11.8	3.9	2.44	.474	17.00	20.00
15	Mariners	17	5/3/1997	SEA	vs	MIL	L 4-17	15.00	5	0	0	9.0	17	15	4	6	0	0	49	0	5.00	6.00	0.83	4.00	10.2	12.2	2.56	.382	17.00	17.00
16	Mariners	17	6/13/1994	SEA	@	TEX	L 9-17	19.13	4	0	0	8.0	22	17	5	4	1	0	51	0	4.50	4.50	1.00	5.63	7.8	7.8	3.25	.459	19.13	24.75
17	Mariners	17	9/8/1991	SEA	@	BOS	L 6-17	19.13	5	0	0	8.0	17	17	1	10	1	2	52	0	5.63	11.25	0.50	1.13	9.6	19.2	3.38	.457	19.13	19.13
18	Mariners	17	8/30/1981	SEA	@	CLE	L 11-17	15.75	3	0	0	8.0	16	14	0	6	0	2	48	1	3.38	6.75	0.50	0.00	6.3	12.5	2.75	.410	19.13	18.00
19	Mariners	16	6/3/2023	SEA	@	TEX	L 6-16	18.00	10	0	0	8.0	19	16	4	5	0	0	48	1	11.25	5.63	2.00	4.50	20.8	10.4	3.00	.517	18.00	21.38
20	Mariners	16	5/21/2021	SEA	@	SDP	L 1-16	18.00	8	0	0	8.0	17	16	3	6	0	0	46	0	9.00	6.75	1.33	3.38	17.4	13.0	2.88	.483	18.00	19.13
21	Mariners	16	8/29/2020	SEA	@	LAA	L 3-16	18.00	7	0	0	8.0	13	16	3	11	2	0	49	0	7.88	12.38	0.64	3.38	14.3	22.4	3.00	.385	18.00	14.62
22	Mariners	16	5/20/2017	SEA	vs	CWS	L 1-16	15.00	4	0	0	9.0	19	15	4	2	0	0	47	1	4.00	2.00	2.00	4.00	8.5	4.3	2.33	.405	16.00	19.00
23	Mariners	16	4/9/2013	SEA	vs	HOU	L 9-16	16.00	10	0	0	9.0	22	16	5	6	0	0	53	1	10.00	6.00	1.67	5.00	18.9	11.3	3.11	.531	16.00	22.00
24	Mariners	16	6/22/2007	SEA	vs	CIN	L 1-16	16.00	10	0	0	9.0	16	16	5	6	2	0	52	1	10.00	6.00	1.67	5.00	19.2	11.5	2.44	.379	16.00	16.00
25	Mariners	16	5/8/2003	SEA	vs	NYY	L 5-16	16.00	2	0	0	9.0	17	16	2	3	1	0	48	0	2.00	3.00	0.67	2.00	4.2	6.3	2.22	.375	16.00	17.00

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Results may be incomplete. StatMuse has complete team, game-level data for runs allowed going back to the 1901 season.

Some of the information used here was obtained free of charge from Retrosheet.

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2026 Division Standings

TEAM	W	L	PCT	GB
Athletics	26	24	.520
Rangers	24	25	.490	1.5
Mariners	24	27	.471	2.5
Astros	20	31	.392	6.5
Angels	17	34	.333	9.5

Schedule

DATE	MATCHUP			TIME (ET)
Fri 5/22	SEA	@	KCR	7:40 PM
Sat 5/23	SEA	@	KCR	4:10 PM
Sun 5/24	SEA	@	KCR	2:10 PM
Mon 5/25	SEA	@	ATH	9:40 PM
Tue 5/26	SEA	@	ATH	9:40 PM

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Wed 20 May 2026

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Sale

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Strikeout Leaders

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Cease

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K/9 Leaders

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K/BB Leaders

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Walk Leaders

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DraftKings Points Leaders

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Worst Record ATS

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NL East	W	L	PCT	GB
Braves	35	16	.686
Phillies	25	25	.500	9.5
Nationals	25	26	.490	10.0
Mets	22	28	.440	12.5
Marlins	22	29	.431	13.0
NL Central	W	L	PCT	GB
Brewers	29	18	.617
Cubs	29	21	.580	1.5
Cardinals	28	21	.571	2.0
Pirates	26	24	.520	4.5
Reds	26	24	.520	4.5
NL West	W	L	PCT	GB
Dodgers	31	19	.620
Padres	29	20	.592	1.5
Diamondbacks	26	23	.531	4.5
Giants	20	30	.400	11.0
Rockies	19	32	.373	12.5

AL East	W	L	PCT	GB
Rays	33	15	.688
Yankees	30	21	.588	4.5
Blue Jays	23	27	.460	11.0
Red Sox	22	27	.449	11.5
Orioles	21	29	.420	13.0
AL Central	W	L	PCT	GB
Guardians	30	22	.577
White Sox	25	24	.510	3.5
Twins	23	27	.460	6.0
Royals	20	30	.400	9.0
Tigers	20	31	.392	9.5
AL West	W	L	PCT	GB
Athletics	26	24	.520
Rangers	24	25	.490	1.5
Mariners	24	27	.471	2.5
Astros	20	31	.392	6.5
Angels	17	34	.333	9.5

MLB 2026 Scores & Schedule

Scores

DATE	MATCHUP			SCORE
Wed 5/6	LAD	@	HOU	12-2
Wed 5/6	MIN	@	WSH	2-15
Wed 5/6	CLE	@	KCR	3-1
Thu 5/7	TEX	@	NYY	2-9
Thu 5/7	MIN	@	WSH	5-7

Schedule

DATE	MATCHUP			TIME (ET)
Fri 5/22	CLE	@	PHI	6:40 PM
Fri 5/22	TBR	@	NYY	7:05 PM
Fri 5/22	PIT	@	TOR	7:07 PM
Fri 5/22	MIN	@	BOS	7:10 PM
Fri 5/22	NYM	@	MIA	7:10 PM

The Seattle Mariners allowed their most runs in a game versus the Red Sox on August 15, 2015, with 22 runs.

Interpreted as:

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