what is the most road games won by an mlb team in a month

The Pittsburgh Pirates have the most road wins by a team in a month, with 20 wins in June 1908.

	TEAM	W	MONTH	L	W%	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	GIDP	AVG	OBP	SLG	OPS
1	Pirates	20	June 1908	5	.800	25	860	126	225	28	23	6		73	4		41	971	317	57	34		.262	.322	.369	.691
2	Athletics	19	July 1930	7	.731	26	943	208	296	59	15	25	196	126	8	103	16	1,113	460	99	36		.314	.399	.488	.887
3	Yankees	19	May 1923	4	.826	23	851	134	249	36	11	17	125	97	10	80	9	977	358	64	19		.293	.372	.421	.792
4	Giants	19	May 1916	1	.950	20	713	113	206	35	15	8	99	66	12	74	36	813	295	58	22		.289	.359	.414	.773
5	Tigers	19	July 1908	5	.792	24	861	144	254	43	30	8	121	45	4		32	940	381	81	30		.295	.333	.443	.775
6	Colonels	19	September 1899	8	.704	28		179
7	Indians	18	July 1932	6	.750	24	904	149	276	53	11	17	138	85	4	75	10	1,014	402	81	21		.305	.368	.445	.812
8	Cardinals	18	June 1928	5	.783	23	826	144	244	43	13	22	136	84	6	69	12	943	379	78	27		.295	.365	.459	.823
9	Phillies	18	September 1917	10	.643	29	968	113	230	31	9	7		90	4	117	28	1,098	300	47	36		.238	.305	.310	.615
10	Cubs	18	May 1903	6	.750	24	870	150	254	28	19	1	39	78	10	31	53	980	323	48	22		.292	.357	.371	.728
11	Cubs	17	August 1945	9	.654	26	935	140	262	48	9	11	134	97	7	72	15	1,067	361	68	28	19	.280	.352	.386	.738
12	Cardinals	17	August 1945	8	.680	25	907	105	228	36	6	13	98	79	5	77	10	1,018	315	55	27	18	.251	.315	.347	.662
13	Reds	17	September 1944	7	.708	24	851	99	223	35	2	10	93	68	5	73	14	941	292	47	17	28	.262	.320	.343	.663
14	Red Sox	17	July 1939	5	.773	22	810	148	247	43	7	25	132	88	2	80	4	925	379	75	25	23	.305	.374	.468	.842
15	Yankees	17	August 1935	12	.586	29	1,082	191	319	65	17	15	176	131	2	97	20	1,234	463	97	19		.295	.372	.428	.800
16	Cardinals	17	August 1935	7	.708	24	863	137	244	44	12	18	128	57	3	58	12	941	366	74	18		.283	.329	.424	.753
17	Senators	17	August 1933	7	.708	24	881	135	233	42	10	11	129	86	2	84	19	990	328	63	21		.264	.331	.372	.704
18	Giants	17	June 1929	8	.680	25	970	208	326	57	12	30	194	102	6	70	16	1,116	497	99	38		.336	.403	.512	.915
19	Robins	17	July 1920	7	.708	24	857	124	244	34	20	3	99	62	0	71	1	952	327	57	33		.285	.333	.382	.715
20	Phillies	17	September 1915	10	.630	27	882	97	202	34	9	4		102	9	134	25	1,019	266	47	26		.229	.315	.302	.617
21	Terriers	17	June 1915	8	.680	25	802	102	207	42	13	6	91	77	3		22	920	293	61	38		.258	.325	.365	.691
22	Pirates	17	June 1912	8	.680	25	892	140	252	42	25	9	120	76	7	87	25	1,010	371	76	35		.283	.344	.416	.760
23	Red Sox	17	June 1912	8	.680	25	879	136	250	44	22	7	115	75	9		38	998	359	73	35		.284	.347	.408	.755
24	Senators	17	June 1912	4	.810	21	727	127	207	33	16	4	108	62	5		37	815	284	53	21		.285	.345	.391	.736
25	Giants	17	May 1912	2	.895	20	683	119	193	32	15	4	103	92	10	57	56	809	267	51	24		.283	.376	.391	.767