The Seattle Mariners have a record of 25-14 on May 15 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	5/15/1977	0-1	SEA	vs	BOS	L 4-5	.000	34	4	7	3	0	1	4	2	1	7	0	0	37	13	4	0	0	0	1	.206	.270	.382	.653
2	Mariners	5/15/1978	0-1	SEA	@	DET	L 2-4	.000	26	2	5	1	0	0	2	4	0	3	1	1	32	6	1	0	2	1	3	.192	.281	.231	.512
3	Mariners	5/15/1979	0-1	SEA	vs	KCR	L 4-7	.000	36	4	10	3	0	1	4	4	0	2	1	0	40	16	4	0	0	0	0	.278	.350	.444	.794
4	Mariners	5/15/1979	1-0	SEA	vs	KCR	W 6-2	1.000	29	6	8	1	0	2	5	1	1	2	2	0	32	15	3	1	0	0	3	.276	.323	.517	.840
5	Mariners	5/15/1980	0-1	SEA	@	TOR	L 0-1	.000	28	0	3	0	0	0	0	5	0	4	0	0	33	3	0	0	0	0	2	.107	.242	.107	.350
6	Mariners	5/15/1982	1-0	SEA	vs	BAL	W 3-2	1.000	35	3	11	1	0	0	3	1	0	2	1	0	36	12	1	0	0	0	1	.314	.333	.343	.676
7	Mariners	5/15/1983	0-1	SEA	@	OAK	L 0-3	.000	29	0	4	0	0	0	0	2	0	6	0	1	31	4	0	0	0	0	1	.138	.194	.138	.331
8	Mariners	5/15/1984	0-1	SEA	@	DET	L 4-6	.000	33	4	5	0	0	1	4	6	0	9	1	0	39	8	1	0	0	0	2	.152	.282	.242	.524
9	Mariners	5/15/1985	1-0	SEA	@	BOS	W 7-1	1.000	32	7	9	1	1	3	7	5	2	6	0	1	40	21	5	0	1	1	2	.281	.400	.656	1.056
10	Mariners	5/15/1987	0-1	SEA	vs	NYY	L 3-7	.000	35	3	9	1	1	1	3	5	0	5	1	0	40	15	3	0	0	0	1	.257	.350	.429	.779
11	Mariners	5/15/1988	1-0	SEA	@	BOS	W 11-7	1.000	41	11	15	2	1	1	9	3	0	9	3	0	44	22	4	0	0	0	1	.366	.409	.537	.946
12	Mariners	5/15/1990	1-0	SEA	@	TOR	W 4-3	1.000	40	4	14	2	1	0	4	7	0	4	0	2	47	18	3	0	0	0	1	.350	.447	.450	.897
13	Mariners	5/15/1991	1-0	SEA	@	CLE	W 6-4	1.000	35	6	10	1	0	1	6	5	0	5	1	0	41	14	2	0	1	1	0	.286	.366	.400	.766
14	Mariners	5/15/1992	1-0	SEA	@	TOR	W 2-1	1.000	30	2	5	1	0	0	1	6	0	4	1	1	36	6	1	0	0	1	1	.167	.306	.200	.506
15	Mariners	5/15/1993	0-1	SEA	@	OAK	L 1-2	.000	30	1	5	0	0	1	1	4	0	5	0	1	34	8	1	0	0	0	1	.167	.265	.267	.531
16	Mariners	5/15/1994	1-0	SEA	vs	CAL	W 9-5	1.000	36	9	14	5	0	2	8	8	0	7	2	0	45	25	7	1	0	0	1	.389	.500	.694	1.194
17	Mariners	5/15/1996	1-0	SEA	@	NYY	W 10-5	1.000	43	10	19	4	0	1	10	5	0	7	0	0	48	26	5	0	0	0	2	.442	.500	.605	1.105
18	Mariners	5/15/1997	0-1	SEA	vs	CWS	L 3-4	.000	34	3	7	1	0	1	3	2	0	4	1	0	36	11	2	0	0	1	0	.206	.250	.324	.574
19	Mariners	5/15/1998	0-1	SEA	@	CWS	L 3-6	.000	33	3	7	1	0	1	3	2	2	3	0	0	37	11	2	0	0	0	1	.212	.297	.333	.631
20	Mariners	5/15/1999	0-1	SEA	vs	KCR	L 10-11	.000	36	10	8	2	1	3	10	8	2	6	0	0	46	21	6	0	0	0	0	.222	.391	.583	.975
21	Mariners	5/15/2000	1-0	SEA	vs	MIN	W 14-0	1.000	38	14	16	5	2	3	14	7	0	4	0	0	47	34	10	1	1	0	1	.421	.500	.895	1.395
22	Mariners	5/15/2001	1-0	SEA	vs	CWS	W 4-3	1.000	32	4	9	1	0	1	4	4	0	6	0	0	37	13	2	0	1	0	0	.281	.351	.406	.758
23	Mariners	5/15/2002	1-0	SEA	@	TOR	W 8-6	1.000	37	8	10	3	0	1	8	2	1	6	1	0	41	16	4	0	1	0	0	.270	.317	.432	.750
24	Mariners	5/15/2003	1-0	SEA	@	CLE	W 9-1	1.000	35	9	9	3	0	1	8	9	0	7	1	0	45	15	4	0	1	0	0	.257	.400	.429	.829
25	Mariners	5/15/2004	1-0	SEA	@	NYY	W 13-7	1.000	49	13	15	6	0	0	11	8	3	3	1	1	63	21	6	3	0	6	2	.306	.433	.429	.862
	Total		25-14					.641	1,352	221	371	74	9	47	207	159	17	244	34	10	1,548	604	130	9	11	13	35	.274	.355	.447	.802