Herb Pennock walked the worst walks per nine innings in 1930, with 1.15 BB/9.

Interpreted as:

lowest bb/9 with a minimum of 1 IP per team game by a player in 1930

	NAME	BB/9	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Herb Pennock H. Pennock	1.15	1930	NYY	25	11	7	.611	19	4.32	46	11	1	0	156.1	194	75	95	8	20	0	3	676	4	2.65	2.30	0.46	6.8	3.0	1.37	.309	5.47	98	3.96	89	11.17	8.4
2	Watty Clark W. Clark	1.71	1930	BKN	44	13	13	.500	24	4.19	81	9	1	7	200.0	209	93	110	20	38	0	14	827	1	3.65	2.13	0.90	9.8	4.6	1.24	.275	4.95	86	4.56	95	9.40	5.6
3	Ted Lyons T. Lyons	1.72	1930	CWS	42	22	15	.595	36	3.78	69	29	1	2	297.2	331	125	160	12	57	2	6	1,258	2	2.09	1.21	0.36	5.5	4.5	1.30	.285	4.84	84	4.16	91	10.01	12.8
4	Ray Kolp R. Kolp	1.82	1930	CIN	37	7	12	.368	19	4.22	40	5	2	3	168.1	180	79	86	10	34	0	14	707	3	2.14	1.18	0.53	5.7	4.8	1.27	.273	4.60	88	4.40	93	9.62	5.6
5	Syl Johnson S. Johnson	1.82	1930	SLN	32	12	10	.545	24	4.65	92	9	2	2	187.2	215	97	105	13	38	4	6	793	2	4.41	2.42	0.62	11.6	4.8	1.35	.313	5.04	93	4.09	82	10.31	18.3
6	Lefty Grove L. Grove	1.86	1930	PHA	50	28	5	.848	32	2.54	209	22	2	9	291.0	273	82	101	8	60	5	17	1,191	2	6.46	3.48	0.25	17.5	5.0	1.14	.292	3.12	53	3.09	64	8.44	55.6
7	Red Lucas R. Lucas	1.88	1930	CIN	33	14	16	.467	28	5.38	53	18	1	1	210.2	270	126	135	15	44	1	4	927	0	2.26	1.20	0.64	5.7	4.7	1.49	.313	5.77	113	4.56	97	11.53	3.1
8	Dazzy Vance D. Vance	1.91	1930	BKN	35	17	15	.531	31	2.61	173	20	4	1	258.2	241	75	97	15	55	5	3	1,061	4	6.02	3.15	0.52	16.3	5.2	1.14	.278	3.38	54	3.61	75	8.39	35
9	Ray Kremer R. Kremer	2.05	1930	PIT	39	20	12	.625	38	5.02	58	18	1	0	276.0	366	154	181	29	63	1	1	1,232	3	1.89	0.92	0.95	4.7	5.1	1.55	.312	5.90	100	5.14	103	11.93	-4.9
10	Jack Russell J. Russell	2.08	1930	BSA	35	9	20	.310	30	5.45	35	15	0	0	229.2	302	139	162	11	53	3	3	1,026	1	1.37	0.66	0.43	3.4	5.2	1.55	.315	6.35	120	4.55	99	11.83	1
11	Bill Sherdel B. Sherdel	2.11	1930	TOT	34	9	7	.563	21	4.71	55	8	0	1	183.1	217	96	107	15	43	3	9	802	3	2.70	1.28	0.74	6.9	5.4	1.42	.294	5.25	96	4.72	98	10.65	2.2
12	Erv Brame E. Brame	2.14	1930	PIT	32	17	8	.680	28	4.70	55	22	0	0	235.2	291	123	153	21	56	5	4	1,045	2	2.10	0.98	0.80	5.3	5.4	1.47	.297	5.84	94	4.97	100	11.11	0.3
13	Clint Brown C. Brown	2.15	1930	CLE	35	11	13	.458	31	4.97	54	16	3	1	213.2	271	118	138	14	51	4	3	948	2	2.27	1.06	0.59	5.7	5.4	1.51	.312	5.81	102	4.62	94	11.41	8
14	Carl Hubbell C. Hubbell	2.16	1930	NYG	37	17	12	.586	32	3.87	117	17	3	2	241.2	263	104	120	11	58	11	4	1,037	3	4.36	2.02	0.41	11.3	5.6	1.33	.300	4.47	79	3.98	83	9.79	22.6
15	George Blaeholder G. Blaeholder	2.16	1930	SLA	37	11	13	.458	23	4.61	70	10	1	4	191.1	235	98	119	20	46	2	11	842	1	3.29	1.52	0.94	8.3	5.5	1.47	.305	5.60	96	4.88	101	11.05	-0.4
16	Benny Frey B. Frey	2.28	1930	CIN	44	11	18	.379	28	4.70	43	14	2	1	245.0	295	128	145	15	62	3	9	1,059	7	1.58	0.69	0.55	4.1	5.9	1.46	.299	5.33	99	4.74	100	10.84	-1.4
17	Lefty Stewart L. Stewart	2.32	1930	SLA	35	20	12	.625	33	3.45	79	23	1	0	271.0	281	104	119	21	70	1	2	1,139	0	2.62	1.13	0.70	6.9	6.1	1.30	.269	3.95	72	4.71	97	9.33	4.5
18	Ben Cantwell B. Cantwell	2.34	1930	BSN	31	9	15	.375	21	4.88	43	10	0	2	173.1	213	94	99	15	45	1	6	753	3	2.23	0.96	0.78	5.7	6.0	1.49	.305	5.14	101	4.93	103	11.06	-3.5
19	Tommy Thomas T. Thomas	2.34	1930	CWS	34	5	13	.278	27	5.22	58	7	0	0	169.0	229	98	125	13	44	1	4	783	0	3.09	1.32	0.69	7.4	5.6	1.62	.324	6.66	116	4.61	101	12.20	-1.6
20	Freddie Fitzsimmons F. Fitzsimmons	2.37	1930	NYG	41	19	7	.731	29	4.25	76	17	1	1	224.1	230	106	125	26	59	1	9	946	6	3.05	1.29	1.04	8.0	6.2	1.29	.260	5.01	87	5.13	106	9.23	-8.3
21	Larry Benton L. Benton	2.56	1930	TOT	43	8	15	.348	26	5.50	63	10	0	2	207.2	288	127	155	15	59	0	9	948	9	2.73	1.07	0.65	6.6	6.2	1.67	.337	6.72	115	4.69	99	12.48	0.7
22	Charlie Root C. Root	2.57	1930	CHC	37	16	14	.533	30	4.33	124	15	4	4	220.1	247	106	122	18	63	7	6	967	1	5.07	1.97	0.74	12.8	6.5	1.41	.303	4.98	88	4.39	90	10.09	11.7
23	Firpo Marberry F. Marberry	2.58	1930	WSH	33	15	5	.750	22	4.09	56	9	2	1	185.0	190	84	92	15	53	0	9	774	0	2.72	1.06	0.73	7.2	6.8	1.31	.269	4.48	89	4.81	103	9.24	-3.5
24	Eppa Rixey E. Rixey	2.58	1930	CIN	32	9	13	.409	21	5.10	37	5	0	0	164.0	207	93	103	11	47	7	9	735	2	2.03	0.79	0.60	5.0	6.4	1.55	.310	5.65	107	4.91	104	11.36	-4.1
25	Ray Phelps R. Phelps	2.60	1930	BKN	36	14	7	.667	24	4.11	64	11	2	0	179.2	198	82	98	21	52	3	5	779	1	3.21	1.23	1.05	8.2	6.7	1.39	.277	4.91	84	5.23	108	9.92	-8.5