The New York Yankees and the Minnesota Twins were tied for the most wins in a month in 2019, 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	Yankees	21	August 2019	9	.700	30	1,050	178	292	59	3	74	172	86	10	244	9	2	1,149	579	136	0	3	3	21	.278	.338	.551	.889
2	Twins	21	May 2019	8	.724	29	1,020	191	292	61	5	56	186	98	15	223	9	3	1,148	531	122	2	13	1	12	.286	.353	.521	.874
3	Brewers	20	September 2019	7	.741	27	898	135	208	43	4	40	129	117	15	286	13	3	1,043	379	87	6	7	3	16	.232	.328	.422	.750
4	Braves	20	June 2019	8	.714	28	1,001	187	277	64	6	56	181	100	18	250	14	5	1,128	521	126	5	4	5	18	.277	.352	.520	.872
5	Yankees	20	May 2019	7	.741	27	901	144	230	35	4	45	132	88	9	228	10	3	1,005	408	84	2	5	4	26	.255	.326	.453	.779
6	Astros	20	May 2019	8	.714	28	932	155	259	52	7	47	150	98	13	177	8	6	1,062	466	106	1	18	0	28	.278	.349	.500	.849
7	Astros	19	September 2019	6	.760	25	886	154	236	48	6	58	147	106	13	186	15	2	1,008	470	112	0	3	2	22	.266	.352	.530	.883
8	Nationals	19	August 2019	7	.731	26	926	180	270	59	6	46	167	103	17	196	26	7	1,062	479	111	9	7	7	21	.292	.370	.517	.888
9	Braves	19	August 2019	9	.679	28	954	151	242	48	5	45	145	117	12	257	17	4	1,093	435	98	7	3	6	20	.254	.342	.456	.798
10	Astros	19	August 2019	9	.679	28	987	200	293	69	7	53	191	126	10	195	4	4	1,135	535	129	2	10	7	24	.297	.379	.542	.921
11	Giants	19	July 2019	6	.760	25	927	144	248	60	4	38	138	81	9	238	4	5	1,032	430	102	9	6	5	24	.268	.330	.464	.794
12	Dodgers	19	May 2019	7	.731	26	887	140	244	52	3	40	136	98	16	187	14	1	1,019	422	95	9	9	9	13	.275	.354	.476	.830
13	Dodgers	18	September 2019	6	.750	24	815	135	201	40	2	45	132	70	15	211	14	1	910	380	87	7	3	5	21	.247	.317	.466	.783
14	Athletics	18	September 2019	8	.692	26	887	143	217	48	5	42	141	110	12	236	8	0	1,014	401	95	1	4	4	20	.245	.335	.452	.787
15	Twins	18	September 2019	9	.667	27	935	137	240	45	6	39	133	95	10	219	2	1	1,047	414	90	2	5	5	18	.257	.330	.443	.773
16	Cardinals	18	August 2019	9	.667	27	888	141	236	40	5	32	131	100	12	224	19	6	1,013	382	77	6	7	0	17	.266	.346	.430	.776
17	Indians	18	July 2019	6	.750	24	844	142	240	54	4	40	137	78	8	179	16	7	947	422	98	7	10	8	20	.284	.347	.500	.847
18	Dodgers	18	June 2019	10	.643	28	972	145	260	59	2	47	141	95	11	236	8	2	1,095	464	108	11	6	13	16	.267	.338	.477	.815
19	Rangers	18	June 2019	11	.621	29	987	144	253	62	5	31	131	94	12	288	25	11	1,114	418	98	7	14	4	12	.256	.324	.424	.748
20	Nationals	18	June 2019	8	.692	26	871	145	224	39	6	44	139	79	13	186	18	6	980	407	89	10	7	5	15	.257	.326	.467	.793
21	Cardinals	18	April 2019	7	.720	25	844	139	229	48	3	31	128	98	14	201	13	6	970	376	82	8	6	6	17	.271	.354	.445	.800
22	Mets	17	September 2019	10	.630	27	906	140	231	46	1	50	137	96	15	220	8	4	1,027	429	97	4	6	7	21	.255	.334	.474	.808
23	Nationals	17	September 2019	11	.607	28	933	153	250	54	3	39	146	104	9	220	19	2	1,060	427	96	5	9	5	21	.268	.344	.458	.802
24	Rays	17	September 2019	8	.680	25	858	127	219	44	5	34	121	82	12	230	17	12	962	375	83	0	10	1	19	.255	.325	.437	.762
25	Dodgers	17	August 2019	11	.607	28	944	156	243	68	3	51	152	109	11	244	8	1	1,078	470	122	9	5	10	15	.257	.340	.498	.837