The Seattle Mariners had their best record against the NL in a season in 2006, with a record of 14-4.

Interpreted as:

mariners record in a regular season all-time record vs nl

	TEAM	REC	SEASON	W%	G	W	L	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	14-4	2006	.778	18	14	4	632	114	190	32	11	33	107	57	6	101	13	2	707	343	76	9	3	8	15	.301	.362	.543	.905
2	Mariners	12-6	2001	.667	18	12	6	627	111	177	26	6	30	106	60	9	114	21	3	714	305	62	8	10	2	10	.282	.348	.486	.835
3	Mariners	13-7	2016	.650	20	13	7	708	125	200	36	0	28	120	75	6	129	8	2	798	320	64	5	4	6	14	.282	.354	.452	.806
4	Mariners	11-7	2009	.611	18	11	7	619	73	166	20	3	20	68	51	3	129	13	3	681	252	43	4	4	7	16	.268	.325	.407	.732
5	Mariners	11-7	2002	.611	18	11	7	624	84	162	35	4	19	81	64	6	115	7	4	704	262	58	1	9	10	7	.260	.330	.420	.750
6	Mariners	11-7	2000	.611	18	11	7	583	79	147	31	3	15	71	87	5	111	15	7	698	229	49	14	9	3	17	.252	.349	.393	.742
7	Mariners	12-8	2022	.600	20	12	8	659	83	160	25	2	28	80	60	13	184	10	6	736	273	55	0	4	1	13	.243	.317	.414	.731
8	Mariners	12-8	2017	.600	20	12	8	690	105	197	42	3	20	99	74	13	159	7	4	789	305	65	4	8	9	16	.286	.362	.442	.804
9	Mariners	7-5	2025	.583	12	7	5	433	74	118	18	0	26	70	57	6	103	14	6	501	214	44	2	3	2	5	.273	.363	.494	.857
10	Mariners	26-20	2024	.565	46	26	20	1,519	207	356	59	6	48	197	170	37	463	40	11	1,737	571	113	2	9	2	28	.234	.324	.376	.700
11	Mariners	10-8	2005	.556	18	10	8	632	86	179	40	6	17	82	45	5	119	15	3	695	282	63	7	6	6	8	.283	.333	.446	.779
12	Mariners	10-8	2003	.556	18	10	8	604	70	155	28	2	9	62	63	3	105	16	4	679	214	39	4	5	10	17	.257	.327	.354	.682
13	Mariners	9-9	2011	.500	18	9	9	595	53	137	26	4	9	51	47	3	135	15	4	655	198	39	4	6	5	9	.230	.287	.333	.620
14	Mariners	9-9	2010	.500	18	9	9	604	59	143	30	1	14	59	45	6	131	15	2	666	217	45	5	6	7	10	.237	.293	.359	.653
15	Mariners	9-9	2008	.500	18	9	9	632	83	181	31	0	10	79	57	4	105	16	2	707	242	41	5	9	9	18	.286	.345	.383	.728
16	Mariners	9-9	2007	.500	18	9	9	637	70	175	26	1	15	65	35	7	108	16	4	687	248	42	7	1	5	16	.275	.319	.389	.708
17	Mariners	9-9	2004	.500	18	9	9	576	53	137	25	2	12	50	57	4	123	14	5	646	202	39	5	4	6	13	.238	.309	.351	.660
18	Mariners	22-24	2023	.478	46	22	24	1,549	198	364	73	6	58	191	143	26	455	29	9	1,736	623	137	0	18	5	27	.235	.307	.402	.709
19	Mariners	9-11	2021	.450	20	9	11	649	80	127	32	0	26	77	59	7	180	7	4	718	237	58	0	3	0	11	.196	.269	.365	.634
20	Mariners	9-11	2019	.450	20	9	11	646	72	141	30	4	21	66	77	5	219	14	6	735	242	55	5	2	1	17	.218	.305	.375	.680
21	Mariners	9-11	2014	.450	20	9	11	665	65	168	32	3	13	60	48	7	165	15	6	729	245	48	6	3	4	13	.253	.308	.368	.677
22	Mariners	8-10	2012	.444	18	8	10	610	76	155	23	4	18	71	53	3	148	11	7	675	240	45	4	5	1	10	.254	.314	.393	.708
23	Mariners	7-9	1998	.438	16	7	9	565	76	158	31	5	22	74	56	7	100	14	6	631	265	58	2	1	6	12	.280	.351	.469	.820
24	Mariners	7-9	1997	.438	16	7	9	545	103	148	32	1	33	98	78	5	109	8	5	640	281	66	4	8	4	10	.272	.363	.516	.879
25	Mariners	8-12	2015	.400	20	8	12	689	89	173	30	2	33	88	67	2	179	11	5	766	306	65	6	2	4	13	.251	.318	.444	.763