The Seattle Mariners are 12-20 versus the Nationals 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	6/10/2003	0-1	SEA	vs	MON	L 3-7	.000	35	3	9	1	1	0	3	2	0	9	0	0	38	12	2	1	0	0	0	.257	.297	.343	.640
2	Mariners	6/11/2003	0-1	SEA	vs	MON	L 1-3	.000	34	1	8	1	0	1	1	2	0	4	0	1	36	12	2	0	0	0	1	.235	.278	.353	.631
3	Mariners	6/12/2003	1-0	SEA	vs	MON	W 1-0	1.000	28	1	5	0	0	1	1	3	0	3	0	0	31	8	1	0	0	0	1	.179	.258	.286	.544
4	Mariners	6/11/2004	1-0	SEA	vs	MON	W 1-0	1.000	30	1	10	1	0	0	1	5	0	5	2	1	36	11	1	1	0	1	0	.333	.429	.367	.795
5	Mariners	6/12/2004	1-0	SEA	vs	MON	W 3-0	1.000	26	3	5	0	0	1	3	6	0	6	0	0	34	8	1	1	1	1	0	.192	.333	.308	.641
6	Mariners	6/13/2004	1-0	SEA	vs	MON	W 8-1	1.000	36	8	14	3	0	1	7	3	1	7	1	0	40	20	4	0	0	1	2	.389	.450	.556	1.006
7	Mariners	6/10/2005	0-1	SEA	@	WSH	L 3-9	.000	36	3	10	0	0	1	3	2	0	2	0	0	39	13	1	1	0	1	0	.278	.316	.361	.677
8	Mariners	6/11/2005	0-1	SEA	@	WSH	L 1-2	.000	32	1	6	1	0	0	1	1	0	6	1	0	34	7	1	1	0	0	0	.188	.212	.219	.431
9	Mariners	6/12/2005	0-1	SEA	@	WSH	L 2-3	.000	37	2	10	5	0	0	2	3	0	8	0	0	40	15	5	0	0	0	0	.270	.325	.405	.730
10	Mariners	6/13/2008	0-1	SEA	vs	WSH	L 6-7	.000	40	6	15	4	0	0	6	2	0	5	1	0	43	19	4	0	1	0	2	.375	.395	.475	.870
11	Mariners	6/14/2008	0-1	SEA	vs	WSH	L 2-5	.000	31	2	7	2	0	2	2	3	0	7	0	0	34	15	4	0	0	1	2	.226	.294	.484	.778
12	Mariners	6/15/2008	0-1	SEA	vs	WSH	L 2-6	.000	36	2	8	0	0	0	1	2	0	6	1	0	38	8	0	0	0	0	0	.222	.263	.222	.485
13	Mariners	6/21/2011	0-1	SEA	@	WSH	L 5-6	.000	37	5	13	2	0	0	5	2	0	4	2	0	40	15	2	1	0	0	1	.351	.385	.405	.790
14	Mariners	6/22/2011	0-1	SEA	@	WSH	L 1-2	.000	34	1	6	1	0	0	1	0	0	8	0	0	34	7	1	0	0	0	1	.176	.176	.206	.382
15	Mariners	6/23/2011	0-1	SEA	@	WSH	L 0-1	.000	30	0	4	1	0	0	0	3	0	6	0	0	33	5	1	0	0	0	1	.133	.212	.167	.379
16	Mariners	8/29/2014	0-1	SEA	vs	WSH	L 3-8	.000	37	3	10	1	1	0	3	1	0	12	0	0	38	13	2	0	0	0	0	.270	.289	.351	.641
17	Mariners	8/30/2014	0-1	SEA	vs	WSH	L 1-3	.000	35	1	8	0	0	1	1	0	0	10	1	0	35	11	1	0	0	0	0	.229	.229	.314	.543
18	Mariners	8/31/2014	1-0	SEA	vs	WSH	W 5-3	1.000	34	5	12	2	0	1	5	1	0	5	2	0	35	17	3	0	0	0	2	.353	.371	.500	.871
19	Mariners	5/23/2017	0-1	SEA	@	WSH	L 1-10	.000	30	1	5	0	0	1	1	0	0	6	0	0	30	8	1	0	0	0	2	.167	.167	.267	.433
20	Mariners	5/24/2017	0-1	SEA	@	WSH	L 1-5	.000	35	1	9	2	0	0	1	0	0	9	0	0	35	11	2	0	0	0	1	.257	.257	.314	.571
21	Mariners	5/25/2017	1-0	SEA	@	WSH	W 4-2	1.000	33	4	9	1	0	1	4	6	0	13	0	1	39	13	2	0	0	0	2	.273	.385	.394	.779
22	Mariners	7/13/2022	1-0	SEA	@	WSH	W 6-4	1.000	34	6	8	1	0	4	6	3	0	11	0	0	37	21	5	0	0	0	1	.235	.297	.618	.915
23	Mariners	7/13/2022	1-0	SEA	@	WSH	W 2-1	1.000	31	2	7	0	0	1	2	3	1	7	1	0	36	10	1	0	1	0	2	.226	.306	.323	.628
24	Mariners	8/23/2022	1-0	SEA	vs	WSH	W 4-2	1.000	30	4	6	0	0	2	4	2	0	9	0	0	32	12	2	0	0	0	0	.200	.250	.400	.650
25	Mariners	8/24/2022	0-1	SEA	vs	WSH	L 1-3	.000	30	1	5	2	0	1	1	4	1	9	1	0	35	10	3	0	0	0	2	.167	.286	.333	.619
	Total		12-20					.375	1,072	100	266	38	2	30	97	78	6	242	19	4	1,168	398	70	6	6	7	26	.248	.301	.371	.672