The Seattle Mariners are 17-23 on July 20 all-time.

	TEAM	DATE	REC	TM		OPP	RESULT	W%	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mariners	7/20/1979	1-0	SEA	@	BOS	W 8-0	1.000	33	8	9	3	0	1	7	7	0	3	1	0	42	15	4	1	1	2	1	.273	.390	.455	.845
2	Mariners	7/20/1980	0-1	SEA	vs	DET	L 2-5	.000	34	2	7	2	0	1	1	0	0	3	0	0	34	12	3	0	0	0	0	.206	.206	.353	.559
3	Mariners	7/20/1982	1-0	SEA	@	NYY	W 6-5	1.000	36	6	10	1	1	0	5	3	0	8	3	1	39	13	2	0	0	0	0	.278	.333	.361	.694
4	Mariners	7/20/1983	0-1	SEA	vs	BAL	L 2-4	.000	30	2	5	1	0	0	2	6	0	8	1	1	36	6	1	0	0	0	1	.167	.306	.200	.506
5	Mariners	7/20/1984	0-1	SEA	vs	TOR	L 7-12	.000	36	7	12	0	1	1	7	4	0	5	1	1	40	17	2	0	0	0	1	.333	.400	.472	.872
6	Mariners	7/20/1985	1-0	SEA	@	MIL	W 13-10	1.000	43	13	17	1	2	2	11	5	0	9	0	0	50	28	5	1	1	0	0	.395	.449	.651	1.100
7	Mariners	7/20/1986	1-0	SEA	vs	BOS	W 9-5	1.000	33	9	12	0	0	1	8	5	0	5	1	0	39	15	1	1	0	1	2	.364	.447	.455	.902
8	Mariners	7/20/1987	0-1	SEA	@	MIL	L 11-13	.000	44	11	17	4	0	1	11	4	0	5	1	0	49	24	5	0	1	0	1	.386	.429	.545	.974
9	Mariners	7/20/1988	0-1	SEA	vs	DET	L 5-12	.000	43	5	17	8	0	0	4	1	1	5	1	1	45	25	8	0	0	0	1	.395	.422	.581	1.004
10	Mariners	7/20/1989	1-0	SEA	vs	TOR	W 5-2	1.000	32	5	10	1	0	1	5	2	1	4	0	1	35	14	2	0	0	0	0	.313	.371	.438	.809
11	Mariners	7/20/1990	1-0	SEA	@	MIL	W 6-4	1.000	34	6	11	1	0	1	6	4	0	5	1	2	39	15	2	1	0	0	1	.324	.395	.441	.836
12	Mariners	7/20/1991	1-0	SEA	@	BAL	W 5-1	1.000	33	5	9	0	0	3	4	5	0	0	1	1	38	18	3	0	0	1	2	.273	.368	.545	.914
13	Mariners	7/20/1992	0-1	SEA	vs	DET	L 4-6	.000	36	4	9	4	1	0	3	4	0	4	0	1	40	15	5	0	0	1	0	.250	.325	.417	.742
14	Mariners	7/20/1993	1-0	SEA	@	NYY	W 9-5	1.000	38	9	12	1	0	2	9	4	0	6	0	0	43	19	3	0	1	1	0	.316	.372	.500	.872
15	Mariners	7/20/1995	1-0	SEA	@	MIL	W 4-2	1.000	44	4	8	1	0	0	3	5	0	5	2	0	52	9	1	2	1	2	2	.182	.260	.205	.465
16	Mariners	7/20/1996	0-1	SEA	@	CAL	L 4-5	.000	33	4	6	1	0	1	4	5	0	7	1	1	38	10	2	0	0	1	0	.182	.289	.303	.593
17	Mariners	7/20/1997	1-0	SEA	vs	KCR	W 5-4	1.000	29	5	6	1	0	1	5	7	0	12	2	1	36	10	2	0	0	0	0	.207	.361	.345	.706
18	Mariners	7/20/1999	0-1	SEA	vs	ARI	L 0-6	.000	34	0	8	1	0	0	0	0	1	10	1	0	35	9	1	0	0	0	1	.235	.257	.265	.522
19	Mariners	7/20/2000	0-1	SEA	@	OAK	L 4-5	.000	33	4	9	3	0	1	4	4	0	2	0	2	37	15	4	0	0	1	1	.273	.351	.455	.806
20	Mariners	7/20/2001	1-0	SEA	@	MIN	W 4-0	1.000	37	4	10	0	1	1	4	2	0	6	1	0	39	15	2	0	0	0	0	.270	.308	.405	.713
21	Mariners	7/20/2002	0-1	SEA	@	ANA	L 6-7	.000	35	6	10	2	0	1	6	6	0	8	1	1	41	15	3	0	0	1	1	.286	.390	.429	.819
22	Mariners	7/20/2003	0-1	SEA	@	KCR	L 5-7	.000	38	5	9	1	0	2	5	7	1	7	1	1	46	16	3	0	0	0	0	.237	.370	.421	.791
23	Mariners	7/20/2004	0-1	SEA	vs	BOS	L 7-9	.000	43	7	18	4	0	0	7	4	1	6	6	0	50	22	4	1	1	0	0	.419	.469	.512	.981
24	Mariners	7/20/2005	0-1	SEA	@	TOR	L 4-9	.000	37	4	10	1	0	3	4	1	0	4	0	0	38	20	4	0	0	0	0	.270	.289	.541	.830
25	Mariners	7/20/2007	1-0	SEA	@	TOR	W 4-2	1.000	30	4	6	0	0	1	4	4	0	4	0	1	35	9	1	1	0	0	2	.200	.294	.300	.594
	Total		17-23					.425	1,410	191	369	64	8	38	179	144	17	285	39	19	1,590	563	110	10	9	11	24	.262	.335	.399	.735