The Oakland Athletics had their highest winning percentage in a season versus the Mariners in 1992, winning 92.3 percent of the time.

Interpreted as:

athletics best win% in a regular season vs mariners

	TEAM	W%	SEASON	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Athletics	.923	1992	12	1	13	424	71	117	23	3	12	67	67	5	60	8	5	514	182	38	11	7	6	10	.276	.376	.429	.805
2	Athletics	.895	2006	17	2	19	665	124	205	49	6	17	117	96	8	107	4	3	776	317	72	2	5	8	25	.308	.399	.477	.876
3	Athletics	.867	1978	13	2	15	471	60	135	17	4	11	55	46	4	52	13	17	540	193	32	17	2	6	13	.287	.354	.410	.763
4	Athletics	.857	1981	6	1	7	247	54	74	14	2	11	51	25	3	51	14	2	281	125	27	5	1	2	3	.300	.370	.506	.876
5	Athletics	.769	1986	10	3	13	434	74	121	20	2	13	68	57	3	71	12	5	503	184	35	3	6	0	12	.279	.362	.424	.786
6	Athletics	.692	2000	9	4	13	420	76	100	17	1	15	76	74	4	96	2	3	504	164	33	3	3	4	13	.238	.355	.390	.746
7	Athletics	.692	1993	9	4	13	454	55	108	23	2	12	53	74	4	109	15	4	547	171	37	10	5	10	11	.238	.346	.377	.723
8	Athletics	.692	1990	9	4	13	456	68	112	19	5	9	64	52	5	96	21	2	520	168	33	2	5	3	8	.246	.326	.368	.695
9	Athletics	.692	1989	9	4	13	435	71	109	32	2	9	67	58	6	73	20	4	508	172	43	3	6	3	11	.251	.343	.395	.738
10	Athletics	.692	1988	9	4	13	429	68	111	18	1	14	57	48	1	80	15	5	488	173	33	2	8	5	11	.259	.329	.403	.732
11	Athletics	.692	1983	9	4	13	431	67	112	14	3	14	62	45	5	90	15	10	485	174	31	1	3	2	7	.260	.335	.404	.738
12	Athletics	.684	2010	13	6	19	641	84	176	32	2	18	80	63	5	111	18	5	719	266	52	3	7	2	20	.275	.341	.415	.756
13	Athletics	.667	2005	12	6	18	642	82	177	37	3	12	79	60	6	84	3	3	715	256	52	1	6	5	11	.276	.340	.399	.739
14	Athletics	.632	2012	12	7	19	637	70	138	21	1	24	66	51	7	157	15	5	700	233	46	1	4	4	15	.217	.280	.366	.646
15	Athletics	.615	1996	8	5	13	435	78	120	28	0	19	75	56	4	77	2	3	499	205	47	2	2	7	15	.276	.362	.471	.833
16	Athletics	.615	1985	8	5	13	451	81	128	20	2	11	76	62	3	55	15	5	523	185	33	2	5	3	4	.284	.370	.410	.781
17	Athletics	.615	1984	8	5	13	432	58	113	24	3	13	53	57	1	86	12	5	496	182	40	5	1	5	7	.262	.348	.421	.770
18	Athletics	.615	1980	8	5	13	443	64	122	20	2	14	61	61	1	58	9	10	518	188	36	9	4	13	11	.275	.361	.424	.786
19	Athletics	.615	1979	8	5	13	440	57	122	15	3	12	51	38	2	75	15	7	488	179	30	5	3	6	8	.277	.335	.407	.742
20	Athletics	.600	2020	6	4	10	313	47	77	21	2	11	46	47	9	77	5	0	371	135	34	0	2	2	11	.246	.358	.431	.790
21	Athletics	.579	2004	11	8	19	668	85	173	40	1	21	81	92	7	118	5	1	778	278	62	1	10	7	19	.259	.350	.416	.766
22	Athletics	.571	1994	4	3	7	238	36	62	15	3	5	33	20	1	53	2	4	266	98	23	1	6	1	0	.261	.313	.412	.725
23	Athletics	.538	1995	7	6	13	452	76	129	24	1	17	73	53	2	94	10	5	518	206	42	4	7	5	9	.285	.358	.456	.814
24	Athletics	.526	2019	10	9	19	647	96	153	31	1	35	86	66	6	135	9	2	722	291	67	0	3	1	18	.236	.312	.450	.761
25	Athletics	.526	2008	10	9	19	620	72	139	31	1	17	70	70	5	133	8	4	702	223	49	5	2	2	15	.224	.307	.360	.667