pitcher most shutouts in one month, season, 3- bb, since 1980

Since 1980, Orel Hershiser has thrown the most shutouts with 3 or fewer walks allowed in a month, with 5 shutouts in September 1988.

	NAME	SHO	BB	MONTH	G	W	L	W%	GS	ERA	SO	CG	SV	IP	H	ER	R	HR	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Orel Hershiser O. Hershiser	5	9	September 1988	6	5	0	1.000	6	0.00	34	5	0	55.0	30	0	0	0	0	0	3	201	1	5.56	1.47	3.78	0.00	16.9	4.5	0.71	.190	0.00	4.91
2	John Tudor J. Tudor	4	3	September 1985	5	4	0	1.000	5	1.07	32	4	0	42.0	28	5	5	1	0	0	0	154	0	6.86	0.64	10.67	0.21	20.8	1.9	0.74	.229	1.07	6.00
3	Orel Hershiser O. Hershiser	4	3	July 1984	5	4	0	1.000	4	0.00	39	4	0	37.2	15	0	0	0	1	0	0	131	0	9.32	0.72	13.00	0.00	29.8	2.3	0.48	.170	0.00	3.58
4	Clayton Kershaw C. Kershaw	3	2	May 2016	6	5	0	1.000	6	0.91	65	3	0	49.2	24	5	5	1	0	0	0	169	0	11.78	0.36	32.50	0.18	38.5	1.2	0.52	.228	0.91	4.35
5	Felix Hernandez F. Hernandez	3	5	August 2012	5	4	0	1.000	5	1.08	31	3	0	41.2	19	5	6	1	1	0	0	146	0	6.70	1.08	6.20	0.22	21.2	3.4	0.58	.167	1.30	4.10
6	Derek Holland D. Holland	3	9	July 2011	6	4	1	.800	6	2.77	29	3	0	39.0	31	12	13	2	0	0	0	156	1	6.69	2.08	3.22	0.46	18.6	5.8	1.03	.250	3.00	7.15
7	Cliff Lee C. Lee	3	8	June 2011	5	5	0	1.000	5	0.21	29	3	0	42.0	21	1	1	0	0	0	0	147	0	6.21	1.71	3.63	0.00	19.7	5.4	0.69	.191	0.21	4.50
8	Roy Halladay R. Halladay	3	10	September 2009	6	4	2	.667	6	1.47	43	4	0	49.0	41	8	8	3	1	0	0	194	0	7.90	1.84	4.30	0.55	22.2	5.2	1.04	.277	1.47	7.53
9	Brandon Webb B. Webb	3	6	August 2007	5	4	1	.800	5	1.83	29	3	0	39.1	26	8	8	1	1	0	0	151	0	6.64	1.37	4.83	0.23	19.2	4.0	0.81	.219	1.83	5.95
10	Mark Mulder M. Mulder	3	6	July 2001	6	4	1	.800	6	1.74	33	3	0	46.2	35	9	9	2	1	0	1	174	1	6.36	1.16	5.50	0.39	19.0	3.4	0.88	.250	1.74	6.75
11	Roger Clemens R. Clemens	3	10	August 1998	6	4	0	1.000	6	0.90	68	3	0	50.0	25	5	7	0	0	0	0	184	0	12.24	1.80	6.80	0.00	37.0	5.4	0.70	.236	1.26	4.50
12	Randy Johnson R. Johnson	3	7	August 1998	5	5	0	1.000	5	0.66	58	3	0	41.0	25	3	3	2	2	0	0	152	0	12.73	1.54	8.29	0.44	38.2	4.6	0.78	.277	0.66	5.49
13	Carlos Perez C. Perez	3	8	June 1997	6	4	1	.800	6	1.96	21	3	0	46.0	39	10	10	1	0	0	0	180	2	4.11	1.57	2.63	0.20	11.7	4.4	1.02	.253	1.96	7.63
14	David Cone D. Cone	3	9	May 1994	5	4	1	.800	5	1.23	26	4	0	44.0	21	6	7	1	0	0	0	158	2	5.32	1.84	2.89	0.20	16.5	5.7	0.68	.164	1.43	4.30
15	Doug Drabek D. Drabek	3	5	September 1989	6	3	2	.600	6	2.41	21	3	0	41.0	40	11	12	1	1	0	0	167	0	4.61	1.10	4.20	0.22	12.6	3.0	1.10	.281	2.63	8.78
16	Tim Belcher T. Belcher	3	10	September 1989	5	5	0	1.000	5	0.64	34	4	0	42.1	21	3	3	3	0	0	1	154	1	7.23	2.13	3.40	0.64	22.1	6.5	0.73	.168	0.64	4.46
17	Dave Stieb D. Stieb	3	9	September 1988	5	4	0	1.000	5	0.66	26	3	0	41.0	17	3	4	0	3	0	0	146	0	5.71	1.98	2.89	0.00	17.8	6.2	0.63	.157	0.88	3.73
18	Jack Morris J. Morris	3	8	July 1986	6	5	1	.833	6	0.54	47	4	0	50.0	33	3	4	1	0	0	1	186	3	8.46	1.44	5.88	0.18	25.3	4.3	0.82	.246	0.72	5.94
19	Fernando Valenzuela F. Valenzuela	3	6	May 1986	4	3	1	.750	4	2.06	31	4	0	35.0	20	8	8	3	0	0	2	129	1	7.97	1.54	5.17	0.77	24.0	4.7	0.74	.191	2.06	5.14
20	John Tudor J. Tudor	3	3	July 1985	6	5	1	.833	6	1.09	33	4	0	49.1	39	6	6	0	1	0	0	186	0	6.02	0.55	11.00	0.00	17.7	1.6	0.85	.262	1.09	7.11
21	Bert Blyleven B. Blyleven	3	7	May 1985	6	3	3	.500	6	2.58	36	4	0	45.1	41	13	17	2	2	0	0	184	1	7.15	1.39	5.14	0.40	19.6	3.8	1.06	.285	3.38	8.14
22	Fernando Valenzuela F. Valenzuela	3	7	April 1981	4	4	0	1.000	4	0.25	36	4	0	36.0	21	1	1	0	0	0	0	134	0	9.00	1.75	5.14	0.00	26.9	5.2	0.78	.231	0.25	5.25
23	Jerry Reuss J. Reuss	3	5	June 1980	5	3	0	1.000	5	0.82	22	3	0	44.0	19	4	4	0	0	0	3	155	0	4.50	1.02	4.40	0.00	14.2	3.2	0.55	.148	0.82	3.89
24	Randy Jones R. Jones	3	3	May 1980	7	3	1	.750	7	2.42	21	3	0	52.0	45	14	14	5	0	0	0	198	1	3.63	0.52	7.00	0.87	10.6	1.5	0.92	.237	2.42	7.79
25	Trevor Bauer T. Bauer	2	10	August 2020	5	3	2	.600	5	2.27	41	2	0	31.2	17	8	8	5	2	0	1	123	1	11.65	2.84	4.10	1.42	33.3	8.1	0.85	.185	2.27	4.83