Christy Mathewson has won the most games in a month in the month of August, with 9 wins in August 1904 and in August 1903.

	NAME	W	MONTH	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Christy Mathewson C. Mathewson	9	August 1904	1	.900	10	9		40	7	2	0	69.0	56		21	1	12	2	1		272	0	5.22	1.57	3.33	0.13	14.7	4.4	0.99	.253	2.74	7.30
2	Christy Mathewson C. Mathewson	9	August 1903	1	.900	10	10		71	8	0	0	83.1	85		35	1	19	3	0		358	4	7.67	2.05	3.74	0.11	19.8	5.3	1.25	.318	3.78	9.18
3	Mitch Williams M. Williams	8	August 1991	1	.889	15	0	1.21	22	0	0	5	22.1	10	3	3	0	16	3	13	1	95	0	8.87	6.45	1.38	0.00	23.2	16.8	1.16	.185	1.21	4.03
4	Dizzy Trout D. Trout	8	August 1944	0	1.000	10	8	1.75	36	8	3	0	72.0	67	14	18	1	17	1	1		297	0	4.50	2.13	2.12	0.13	12.1	5.7	1.17	.273	2.25	8.38
5	Urban Shocker U. Shocker	8	August 1921	1	.889	10	10	3.14	37	9	0	0	83.0	90	29	35	2	22	2	0		359	1	4.01	2.39	1.68	0.22	10.3	6.1	1.35	.297	3.80	9.76
6	Scott Perry S. Perry	8	August 1918	2	.800	11	8	0.93	27	6	1	0	87.1	76	9	15	0	34	1	3		358	0	2.78	3.50	0.79	0.00	7.5	9.5	1.26	.257	1.55	7.83
7	Walter Johnson W. Johnson	8	August 1917	1	.889	9	5	0.58	34	5	2	0	62.0	33		9	0	12	3	4		230	1	4.94	1.74	2.83	0.00	14.8	5.2	0.73	.182	1.31	4.79
8	Walter Johnson W. Johnson	8	August 1912	2	.800	12	6	0.00	61	5	2	1	68.1	40		11	0	13	1	6			2	8.03	1.71	4.69	0.00		5.2	0.78	.230	1.45	5.27
9	Christy Mathewson C. Mathewson	8	August 1908	1	.889	9	6		34	6	2	0	60.2	40		7	0	4	1	3		221	0	5.04	0.59	8.50	0.00	15.4	1.8	0.73	.220	1.04	5.93
10	Tully Sparks T. Sparks	8	August 1907	0	1.000	8	8		17	7	1	0	69.0	55		14	0	9	1	0		255	0	2.22	1.17	1.89	0.00	6.7	3.5	0.93	.241	1.83	7.17
11	Ed Walsh E. Walsh	8	August 1906	2	.800	11	9		49	9	6	0	77.0	47		9	1	12	1	2			1	5.73	1.40	4.08	0.12		4.6	0.77	.230	1.05	5.49
12	Rube Waddell R. Waddell	8	August 1905	1	.889	11	8		80	6	4	0	74.1	51		18	2	23	1	3			1	9.69	2.78	3.48	0.24		12.1	1.00	.583	2.18	6.17
13	Togie Pittinger T. Pittinger	8	August 1902	1	.889	10	8	1.73	34	8	3	0	78.0	64	15	17	0	24	2	1			1	3.92	2.77	1.42	0.00		8.5	1.13	.288	1.96	7.38
14	Noodles Hahn N. Hahn	8	August 1902	1	.889	9	9	2.14	45	9	1	0	84.0	73	20	24	0	20	1	0		334	1	4.82	2.14	2.25	0.00	13.5	6.0	1.11	.272	2.57	7.82
15	Snake Wiltse S. Wiltse	8	August 1901	2	.800	10	10	2.39	23	10	2	0	94.0	99	25	41	1	17	4	0		400	3	2.20	1.63	1.35	0.10	5.8	4.3	1.23	.276	3.93	9.48
16	Bret Saberhagen B. Saberhagen	7	August 1989	0	1.000	7	7	1.58	36	3	1	0	57.0	42	10	11	5	5	0	0	0	213	2	5.68	0.79	7.20	0.79	16.9	2.3	0.82	.222	1.74	6.63
17	Rick Reuschel R. Reuschel	7	August 1979	0	1.000	7	7	1.63	42	2	0	0	55.1	48	10	11	4	16	1	0	1	225	0	6.83	2.60	2.63	0.65	18.7	7.1	1.16	.272	1.79	7.81
18	Bob Stanley B. Stanley	7	August 1978	1	.875	10	1	2.72	11	0	0	0	36.1	35	11	14	1	10	0	8	3	151	0	2.72	2.48	1.10	0.25	7.3	6.6	1.24	.264	3.47	8.67
19	Mike Marshall M. Marshall	7	August 1972	1	.875	13	0	1.53	28	0	0	2	29.1	15	5	5	2	14	1	13	2	108	2	8.59	4.30	2.00	0.61	25.9	13.0	0.99	.206	1.53	4.60
20	Dave McNally D. McNally	7	August 1970	0	1.000	7	7	1.32	32	6	1	0	61.1	55	9	11	2	7	0	0	0	243	2	4.70	1.03	4.57	0.29	13.2	2.9	1.01	.262	1.61	8.07
21	Mike Cuellar M. Cuellar	7	August 1970	1	.875	8	8	3.08	39	5	1	0	64.1	59	22	23	8	13	1	0	2	261	1	5.46	1.82	3.00	1.12	14.9	5.0	1.12	.255	3.22	8.25
22	Mike Cuellar M. Cuellar	7	August 1969	1	.875	8	8	1.97	40	4	2	0	64.0	47	14	17	4	16	0	0	0	244	0	5.63	2.25	2.50	0.56	16.4	6.6	0.98	.234	2.39	6.61
23	Jim Kaat J. Kaat	7	August 1966	1	.875	8	8	2.01	41	5	2	0	62.2	46	14	14	4	14	2	0	2	241	1	5.89	2.01	2.93	0.57	17.0	5.8	0.96	.233	2.01	6.61
24	Camilo Pascual C. Pascual	7	August 1963	0	1.000	7	7	2.51	50	5	0	0	61.0	57	17	21	6	22	1	0	3	259	2	7.38	3.25	2.27	0.89	19.3	8.5	1.30	.283	3.10	8.41
25	Lew Burdette L. Burdette	7	August 1958	1	.875	8	8	1.89	38	7	1	0	71.1	61	15	15	4	16	1	0	2	284	0	4.79	2.02	2.38	0.50	13.4	5.6	1.08	.253	1.89	7.70