The Washington Nationals have a 12-8 record against the Mariners on the road all-time.

	TEAM	DATE	REC	TM		OPP	RESULT	W%	AB	R	H	2B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Expos	6/10/2003	1-0	MON	@	SEA	W 7-3	1.000	36	7	11	1	2	7	2	0	5	0	1	38	18	3	0	0	0	1	.306	.342	.500	.842
2	Expos	6/11/2003	1-0	MON	@	SEA	W 3-1	1.000	32	3	9	2	0	3	2	0	4	1	0	37	11	2	2	1	0	1	.281	.314	.344	.658
3	Expos	6/12/2003	0-1	MON	@	SEA	L 0-1	.000	29	0	5	0	0	0	3	0	7	0	0	34	5	0	2	0	0	0	.172	.250	.172	.422
4	Expos	6/11/2004	0-1	MON	@	SEA	L 0-1	.000	30	0	5	1	0	0	3	0	5	0	0	34	6	1	1	0	0	1	.167	.242	.200	.442
5	Expos	6/12/2004	0-1	MON	@	SEA	L 0-3	.000	33	0	8	0	0	0	1	0	7	0	1	34	8	0	0	0	0	0	.242	.265	.242	.507
6	Expos	6/13/2004	0-1	MON	@	SEA	L 1-8	.000	32	1	6	0	1	1	1	0	9	1	0	33	9	1	0	0	0	1	.188	.212	.281	.493
7	Nationals	6/13/2008	1-0	WSH	@	SEA	W 7-6	1.000	37	7	10	1	0	7	5	0	9	2	0	42	11	1	0	0	0	0	.270	.357	.297	.654
8	Nationals	6/14/2008	1-0	WSH	@	SEA	W 5-2	1.000	39	5	13	5	1	5	4	0	9	2	0	43	21	6	0	0	0	0	.333	.395	.538	.934
9	Nationals	6/15/2008	1-0	WSH	@	SEA	W 6-2	1.000	36	6	12	5	1	6	4	1	4	2	1	43	20	6	1	1	0	1	.333	.405	.556	.960
10	Nationals	8/29/2014	1-0	WSH	@	SEA	W 8-3	1.000	38	8	14	1	6	8	2	0	2	0	0	41	33	7	0	1	0	2	.368	.390	.868	1.259
11	Nationals	8/30/2014	1-0	WSH	@	SEA	W 3-1	1.000	34	3	8	1	1	3	2	0	9	0	0	36	12	2	0	0	1	2	.235	.278	.353	.631
12	Nationals	8/31/2014	0-1	WSH	@	SEA	L 3-5	.000	34	3	6	2	3	3	2	0	10	0	0	36	17	5	0	0	0	0	.176	.222	.500	.722
13	Nationals	8/23/2022	0-1	WSH	@	SEA	L 2-4	.000	31	2	5	1	1	2	2	0	10	1	1	33	9	2	0	0	0	0	.161	.212	.290	.502
14	Nationals	8/24/2022	1-0	WSH	@	SEA	W 3-1	1.000	34	3	10	1	1	3	1	0	11	0	1	36	14	2	1	0	0	1	.294	.314	.412	.726
15	Nationals	6/26/2023	0-1	WSH	@	SEA	L 4-8	.000	36	4	10	2	2	4	3	0	12	0	0	39	18	4	0	0	0	1	.278	.333	.500	.833
16	Nationals	6/27/2023	1-0	WSH	@	SEA	W 7-4	1.000	39	7	9	2	1	6	6	1	12	3	0	47	14	3	0	1	0	1	.231	.340	.359	.699
17	Nationals	6/28/2023	1-0	WSH	@	SEA	W 4-1	1.000	32	4	8	3	0	4	4	0	6	1	0	36	11	3	0	0	0	2	.250	.333	.344	.677
18	Nationals	5/27/2025	0-1	WSH	@	SEA	L 1-9	.000	29	1	4	1	1	1	1	0	5	0	0	30	8	2	0	0	0	2	.138	.167	.276	.443
19	Nationals	5/28/2025	1-0	WSH	@	SEA	W 9-0	1.000	38	9	12	4	4	9	4	1	6	1	0	43	28	8	0	0	0	2	.316	.395	.737	1.132
20	Nationals	5/29/2025	1-0	WSH	@	SEA	W 9-3	1.000	39	9	12	3	1	9	4	0	8	1	1	44	18	4	0	1	1	1	.308	.364	.462	.825
	Total		12-8					.600	688	82	177	36	26	81	56	3	150	15	6	759	291	62	7	5	2	19	.257	.314	.423	.737