The Seattle Mariners have a 25-13 record on April 12 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	4/12/1977	0-1	SEA	vs	MIN	L 2-3	.000	35	2	9	2	0	1	2	1	0	4	1	0	37	14	3	1	0	0	0	.257	.278	.400	.678
2	Mariners	4/12/1978	0-1	SEA	@	OAK	L 3-4	.000	32	3	8	3	1	0	3	3	0	4	1	0	36	13	4	0	1	1	1	.250	.306	.406	.712
3	Mariners	4/12/1979	1-0	SEA	vs	OAK	W 4-3	1.000	27	4	4	3	0	0	2	4	1	4	1	0	34	7	3	1	1	1	0	.148	.273	.259	.532
4	Mariners	4/12/1980	1-0	SEA	vs	TOR	W 3-2	1.000	29	3	6	0	0	2	3	8	0	3	1	1	39	12	2	1	1	1	1	.207	.368	.414	.782
5	Mariners	4/12/1981	0-1	SEA	vs	CAL	L 6-8	.000	37	6	13	1	0	1	6	1	0	6	3	1	39	17	2	1	0	0	1	.351	.368	.459	.828
6	Mariners	4/12/1983	1-0	SEA	@	CAL	W 8-1	1.000	36	8	14	5	1	2	7	2	1	7	0	1	40	27	8	0	1	1	2	.389	.425	.750	1.175
7	Mariners	4/12/1985	1-0	SEA	vs	MIN	W 2-1	1.000	28	2	3	2	0	1	2	3	0	0	1	1	31	8	3	0	0	0	0	.107	.194	.286	.479
8	Mariners	4/12/1986	1-0	SEA	@	MIN	W 10-4	1.000	40	10	16	2	0	2	10	3	0	8	3	2	44	24	4	1	0	0	0	.400	.442	.600	1.042
9	Mariners	4/12/1987	0-1	SEA	vs	MIN	L 5-8	.000	34	5	9	1	0	2	5	3	0	8	2	0	37	16	3	0	0	0	2	.265	.324	.471	.795
10	Mariners	4/12/1988	1-0	SEA	vs	OAK	W 6-4	1.000	33	6	9	3	0	3	6	3	0	5	3	0	36	21	6	0	0	0	0	.273	.333	.636	.970
11	Mariners	4/12/1989	1-0	SEA	vs	CWS	W 9-1	1.000	33	9	11	3	1	0	9	5	1	2	0	0	39	16	4	0	0	0	3	.333	.436	.485	.921
12	Mariners	4/12/1991	0-1	SEA	@	OAK	L 1-6	.000	33	1	7	1	0	0	1	8	0	2	0	0	41	8	1	0	0	0	2	.212	.366	.242	.608
13	Mariners	4/12/1992	1-0	SEA	vs	KCR	W 2-1	1.000	31	2	6	1	0	0	2	3	0	4	1	1	34	7	1	0	0	0	0	.194	.265	.226	.491
14	Mariners	4/12/1994	1-0	SEA	vs	MIN	W 12-0	1.000	37	12	14	5	0	1	10	5	1	3	1	0	45	22	6	1	1	0	1	.378	.455	.595	1.049
15	Mariners	4/12/1996	1-0	SEA	@	TOR	W 9-6	1.000	37	9	13	1	1	4	8	5	0	6	0	1	44	28	6	1	1	0	0	.351	.419	.757	1.175
16	Mariners	4/12/1997	1-0	SEA	@	BOS	W 5-1	1.000	35	5	7	5	0	0	4	4	1	5	0	1	41	12	5	0	1	0	1	.200	.293	.343	.636
17	Mariners	4/12/1998	0-1	SEA	@	BOS	L 7-8	.000	39	7	14	3	0	3	7	3	0	10	1	0	42	26	6	0	0	1	2	.359	.405	.667	1.071
18	Mariners	4/12/1999	1-0	SEA	vs	OAK	W 6-3	1.000	33	6	12	4	0	3	6	2	0	7	1	1	35	25	7	0	0	0	1	.364	.400	.758	1.158
19	Mariners	4/12/2000	1-0	SEA	@	DET	W 4-0	1.000	35	4	9	2	0	0	4	2	0	7	1	0	38	11	2	1	0	0	1	.257	.297	.314	.612
20	Mariners	4/12/2001	1-0	SEA	@	OAK	W 7-3	1.000	36	7	9	2	0	2	5	5	1	6	0	0	42	17	4	0	0	0	0	.250	.357	.472	.829
21	Mariners	4/12/2002	1-0	SEA	@	TEX	W 7-3	1.000	35	7	9	1	1	1	7	4	1	7	1	0	41	15	3	0	1	0	0	.257	.341	.429	.770
22	Mariners	4/12/2003	1-0	SEA	vs	TEX	W 13-4	1.000	37	13	14	6	0	2	12	9	1	8	0	0	47	26	8	0	0	0	1	.378	.511	.703	1.213
23	Mariners	4/12/2006	1-0	SEA	@	CLE	W 11-9	1.000	39	11	13	3	2	1	11	5	0	6	2	0	44	23	6	0	0	1	1	.333	.409	.590	.999
24	Mariners	4/12/2008	1-0	SEA	vs	LAA	W 8-3	1.000	38	8	15	2	1	2	7	2	0	4	0	0	41	25	5	1	0	2	1	.395	.425	.658	1.083
25	Mariners	4/12/2009	1-0	SEA	@	OAK	W 1-0	1.000	28	1	3	1	0	0	1	3	1	4	2	0	32	4	1	0	0	0	2	.107	.219	.143	.362
	Total		25-13					.658	1,286	200	338	77	9	44	185	130	14	241	32	12	1,449	565	130	9	10	9	28	.263	.335	.439	.774