what was the best record in a may for the any team since 1900

Since 1900, the New York Yankees have the best record by a team in a month in the month of May, with a record of 24-4 in May 1939.

	TEAM	REC	MONTH	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	Yankees	24-4	May 1939	.857	28	24	4	978	213	284	49	12	32	200	156	12	91	25		1,164	453	93	18			11	.290	.394	.463	.858
2	Athletics	23-4	May 1931	.852	27	23	4	989	177	298	63	12	32	170	96	6	78	3		1,105	481	107	14				.301	.367	.486	.853
3	Pirates	22-4	May 1902	.846	26	22	4	885	166	268	32	25	4	138	94	9	79	37		1,014	362	61	26				.303	.376	.409	.785
4	Giants	20-4	May 1912	.833	25	20	4	848	147	241	41	19	7	127	117	11	77	81		1,002	341	67	26				.284	.378	.402	.780
5	Yankees	24-5	May 1928	.828	29	24	5	992	184	309	49	20	40	172	105	4	112	9		1,127	518	109	26				.311	.380	.522	.902
6	Phillies	22-5	May 1976	.815	27	22	5	894	150	255	43	10	20	138	112	8	129	19	9	1,046	378	73	19	13	14	22	.285	.365	.423	.788
7	Athletics	22-5	May 1929	.815	27	22	5	971	188	313	63	16	20	179	100	9	76	7		1,126	468	99	46				.322	.391	.482	.873
8	White Sox	20-5	May 1951	.800	26	20	5	891	147	252	50	19	14	137	116	7	82	19	12	1,039	382	83	25			17	.283	.370	.429	.799
9	Athletics	20-5	May 1910	.800	26	20	5	835	122	242	35	14	1		75	7	94	42		949	308	50	32				.290	.353	.369	.722
10	Rays	22-6	May 2021	.786	28	22	6	963	160	228	53	3	40	153	120	14	311	23	8	1,100	407	96	1	2	7	12	.237	.329	.423	.752
11	Padres	22-6	May 2005	.786	28	22	6	983	160	284	54	8	28	155	115	8	177	20	11	1,129	438	90	12	11	8	25	.289	.364	.446	.810
12	Giants	22-6	May 1905	.786	28	22	6	920	144	257	41	13	12	123	73	13	70	47		1,037	360	66	31				.279	.341	.391	.732
13	Highlanders	18-5	May 1906	.783	23	18	5	762	150	240	31	24	5	129	62	14	72	36		877	334	60	39				.315	.377	.438	.815
14	Red Sox	21-6	May 1946	.778	27	21	6	937	151	251	42	7	21	139	138	1	122	8		1,095	370	70	19			16	.268	.362	.395	.757
15	Yankees	21-6	May 1942	.778	27	21	6	907	132	240	30	12	21	122	79	10	83	8		1,008	357	63	12			15	.265	.330	.394	.724
16	Cardinals	21-6	May 1934	.778	27	21	6	963	148	283	57	14	17	144	58	8	71	11		1,045	419	88	16				.294	.339	.435	.774
17	Yankees	21-6	May 1923	.778	27	21	6	992	156	292	43	13	17	146	118	13	96	9		1,147	412	73	24				.294	.377	.415	.792
18	Reds	20-6	May 1995	.769	26	20	6	904	142	250	47	14	25	136	110	9	170	42	13	1,049	400	86	20	6	11	21	.277	.359	.442	.801
19	Giants	20-6	May 1978	.769	26	20	6	878	107	234	38	7	16	100	92	4	153	23	9	1,004	334	61	24	6	10	13	.267	.337	.380	.717
20	Astros	20-6	May 1969	.769	26	20	6	833	128	212	36	9	23	118	121	7	145	12	13	986	335	68	14	11	12	16	.255	.350	.402	.752
21	Reds	20-6	May 1961	.769	26	20	6	873	116	234	42	6	31	112	72	7	136	11	13	969	381	79	6	11	7	19	.268	.325	.436	.761
22	Giants	20-6	May 1952	.769	26	20	6	870	124	219	35	11	25	112	90	7	120	11	8	977	351	71	10			17	.252	.327	.403	.730
23	Yankees	20-6	May 1950	.769	26	20	6	865	153	246	40	17	14	143	134	4	80	5		1,019	362	71	16			30	.284	.383	.418	.801
24	Giants	20-6	May 1916	.769	26	20	6	921	138	267	42	16	9	124	77	14	93	40		1,039	368	67	27				.290	.354	.400	.753
25	Pirates	20-6	May 1909	.769	26	20	6	888	127	235	38	15	2		104	5		35		1,040	309	55	43				.265	.345	.348	.693