The Seattle Mariners had their most wins in a month in August 2023, with 21 wins.

	TEAM	W	MONTH	L	W%	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	Mariners	21	August 2023	6	.778	27	954	159	272	56	2	46	153	107	26	270	31	8	1,092	470	104	1	4	2	20	.285	.371	.493	.864
2	Mariners	20	August 2001	9	.690	29	1,036	153	307	48	6	25	143	107	9	184	26	14	1,171	442	79	11	8	10	29	.296	.365	.427	.791
3	Mariners	20	May 2001	7	.741	27	963	172	277	54	6	26	162	114	11	166	38	6	1,105	421	86	5	12	11	9	.288	.365	.437	.803
4	Mariners	20	April 2001	5	.800	25	870	138	239	44	3	23	131	109	4	150	16	4	1,002	358	70	6	13	15	20	.275	.353	.411	.765
5	Mariners	20	June 1997	7	.741	27	912	152	255	64	2	50	148	97	10	181	8	9	1,034	473	116	9	6	6	19	.280	.353	.519	.872
6	Mariners	19	June 2018	9	.679	28	962	126	255	36	3	40	122	73	9	228	10	10	1,056	417	79	5	7	4	23	.265	.321	.433	.754
7	Mariners	19	May 2003	8	.704	27	954	165	292	52	8	36	161	90	5	156	16	5	1,060	468	96	3	8	3	24	.306	.366	.491	.857
8	Mariners	19	June 2000	8	.704	27	874	153	233	46	3	33	141	134	9	176	27	8	1,038	384	82	9	12	3	26	.267	.365	.439	.805
9	Mariners	19	September 1995	8	.704	27	927	155	255	55	3	44	150	91	3	175	25	7	1,036	448	102	7	8	8	11	.275	.339	.483	.822
10	Mariners	18	July 2022	7	.720	25	820	102	190	33	3	29	98	84	11	219	10	5	921	316	65	1	5	5	18	.232	.310	.385	.695
11	Mariners	18	September 2021	8	.692	26	885	130	213	46	2	32	126	89	13	206	10	5	994	359	80	0	7	2	22	.241	.317	.406	.723
12	Mariners	18	May 2018	11	.621	29	987	118	258	48	4	25	111	86	20	224	22	6	1,114	389	77	12	9	1	25	.261	.330	.394	.724
13	Mariners	18	September 2016	9	.667	27	951	147	256	45	1	42	140	93	9	227	14	1	1,065	429	88	5	7	7	19	.269	.338	.451	.789
14	Mariners	18	June 2014	10	.643	28	944	117	246	41	7	29	114	58	8	215	18	9	1,025	388	77	11	4	4	15	.261	.308	.411	.719
15	Mariners	18	June 2007	9	.667	27	946	142	274	47	2	23	134	75	13	153	16	4	1,053	394	72	12	7	8	22	.290	.348	.416	.764
16	Mariners	18	June 2006	8	.692	26	915	151	263	55	10	39	140	75	6	139	17	4	1,010	455	104	8	6	7	18	.287	.343	.497	.841
17	Mariners	18	April 2002	8	.692	26	892	151	252	48	10	22	144	100	11	155	28	7	1,027	386	80	8	16	13	16	.283	.356	.433	.789
18	Mariners	18	July 2001	9	.667	27	925	135	252	49	9	27	130	80	12	160	25	7	1,042	400	85	7	18	3	18	.272	.332	.432	.765
19	Mariners	18	June 2001	9	.667	27	926	170	265	53	7	40	162	103	13	164	30	6	1,062	452	100	11	9	6	15	.286	.363	.488	.851
20	Mariners	18	September 2000	10	.643	28	931	152	242	52	8	35	148	136	9	183	23	5	1,099	415	95	16	7	5	22	.260	.357	.446	.803
21	Mariners	17	July 2023	9	.654	26	875	124	218	59	1	34	120	79	25	272	19	2	986	381	94	2	5	2	17	.249	.327	.435	.763
22	Mariners	17	May 2023	11	.607	28	938	129	223	47	2	30	122	100	16	262	14	5	1,059	364	79	0	5	2	15	.238	.320	.388	.708
23	Mariners	17	August 2022	10	.630	27	893	124	197	29	4	39	119	95	11	221	15	2	1,015	351	72	5	11	4	21	.221	.300	.393	.693
24	Mariners	17	May 2016	11	.607	28	976	156	276	43	6	45	151	88	11	206	10	8	1,088	466	94	5	8	7	20	.283	.346	.477	.824
25	Mariners	17	August 2014	10	.630	27	892	123	233	37	7	22	112	74	11	183	19	10	990	350	66	6	7	6	26	.261	.323	.392	.716