lowest bb/9 in a season by a pitcher with a minimum of 100 ip

George Zettlein has walked the lowest walks per nine innings with 100.0+ innings pitched in a season, with 0.23 BB/9 in his rookie season in 1876.

	NAME	BB/9	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	George Zettlein G. Zettlein	0.23	234.0	1876	PHI	28	4	20	.167	25	3.88	10	23	1	2	358	101	212	2	6		4		1,089	4	0.38	1.67	0.08	0.9	0.6	1.56		8.15	159	2.34	96	13.77	7.9
2	Cherokee Fisher C. Fisher	0.24	229.1	1876	CIN	28	4	20	.167	24	3.02	29	22	0	0	294	77	206	6	6		4		1,039	6	1.14	4.83	0.24	2.8	0.6	1.31		8.08	138	2.40	109	11.54	-10.3
3	George Bradley G. Bradley	0.28	196.0	1880	PRO	28	13	8	.619	20	1.38	54	16	4	2	158	30	66	2	6		7		757	7	2.48	9.00	0.09	7.1	0.8	0.84		3.03	60	2.21	96	7.26	0.6
4	Tommy Bond T. Bond	0.29	408.0	1876	HAR	45	31	13	.705	45	1.68	88	45	6	0	355	76	164	2	13		0		1,623	8	1.94	6.77	0.04	5.4	0.8	0.90		3.62	69	1.96	81	7.83	27.5
5	Tommy Bond T. Bond	0.39	555.1	1879	BOS	64	43	19	.694	64	1.96	155	59	11	0	543	121	206	8	24		1		2,189	13	2.51	6.46	0.13	7.1	1.1	1.02		3.34	79	2.50	101	8.80	-3.4
6	Bobby Mathews B. Mathews	0.42	516.0	1876	NYM	56	21	34	.382	56	2.86	37	55	2	0	693	164	395	8	24		0		2,327	3	0.65	1.54	0.14	1.6	1.0	1.39		6.89	128	2.43	109	12.09	-17.6
7	Carlos Silva C. Silva	0.43	188.1	2005	MIN	27	9	8	.529	27	3.44	71	2	0	0	212	72	83	25	9	3	0	2	749	0	3.39	7.89	1.19	9.5	1.2	1.17	.292	3.97	80	4.17	100	10.13	0.1
8	Guy Hecker G. Hecker	0.43	104.0	1882	LOU	13	6	6	.500	11	1.30	33	10	0	0	75	15	49	0	5		1		403	7	2.86	6.60	0.00	8.2	1.2	0.77		4.24	49	2.27	82	6.49	5.1
9	Al Spalding A. Spalding	0.44	528.2	1876	CWS	61	47	12	.797	60	1.75	39	53	8	0	542	103	226	6	26		2		2,219	1	0.66	1.50	0.10	1.8	1.2	1.07		3.85	73	2.38	99	9.23	9
10	Pud Galvin P. Galvin	0.47	593.0	1879	BUF	66	37	27	.578	66	2.28	136	65	6	0	585	150	299	3	31		0		2,436	23	2.06	4.39	0.05	5.6	1.3	1.04		4.54	89	2.50	98	8.88	6.4
11	George Bradley G. Bradley	0.48	487.0	1879	TRO	54	13	40	.245	54	2.85	133	53	3	0	590	154	361	12	26		0		2,170	43	2.46	5.12	0.22	6.1	1.2	1.26		6.67	115	2.67	108	10.90	-12.6
12	Sam Weaver S. Weaver	0.49	383.0	1878	MIL	45	12	31	.279	43	1.95	95	39	1	0	371	83	214	2	21		2		1,589	25	2.23	4.52	0.05	6.0	1.3	1.02		5.03	79	2.27	92	8.72	15.6
13	Hal Brown H. Brown	0.51	141.1	1963	HOU	26	5	11	.313	20	3.31	68	6	3	0	137	52	54	14	8	0	2	0	563	0	4.33	8.50	0.89	12.1	1.4	1.03	.260	3.44	106	2.97	96	8.72	1.8
14	Terry Larkin T. Larkin	0.53	513.1	1879	CWS	58	31	23	.574	58	2.44	142	57	4	0	514	139	277	5	30		0		2,176	20	2.49	4.73	0.09	6.5	1.4	1.06		4.86	95	2.49	97	9.01	9.3
15	Jim Devlin J. Devlin	0.54	622.0	1876	LOU	68	30	35	.462	68	1.56	122	66	5	0	566	108	309	3	37		0		2,568	14	1.77	3.30	0.04	4.8	1.4	0.97		4.47	62	2.08	82	8.19	50.7
16	Denny Driscoll D. Driscoll	0.54	201.0	1882	PIT	23	13	9	.591	23	1.21	59	23	0	0	162	27	73	0	12		0		799	7	2.64	4.92	0.00	7.4	1.5	0.87		3.27	45	2.36	84	7.25	10.2
17	Terry Larkin T. Larkin	0.55	506.0	1878	CWS	56	29	26	.527	56	2.24	163	56	1	0	511	126	288	4	31		0		2,105	37	2.90	5.26	0.07	7.7	1.5	1.07		5.12	94	2.18	92	9.09	15.3
18	John Ward J. Ward	0.55	587.0	1879	PRO	70	47	19	.712	60	2.15	239	58	2	1	571	140	270	5	36		10		2,425	29	3.66	6.64	0.08	9.9	1.5	1.03		4.14	89	2.22	92	8.75	7.9
19	Tommy Bond T. Bond	0.56	532.2	1878	BOS	59	40	19	.678	59	2.06	182	57	9	0	571	122	222	5	33		1		2,159	13	3.08	5.52	0.08	8.4	1.5	1.13		3.75	90	2.16	95	9.65	5.5
20	Bill Fischer B. Fischer	0.56	127.2	1962	KCA	34	4	12	.250	16	3.95	38	5	0	2	150	56	61	16	8	1	6	2	533	2	2.68	4.75	1.13	7.1	1.5	1.24	.285	4.30	95	3.86	90	10.57	5.9
21	Candy Cummings C. Cummings	0.58	216.0	1876	HAR	24	16	8	.667	24	1.67	26	24	5	0	215	40	97	0	14		0		913	7	1.08	1.86	0.00	2.8	1.5	1.06		4.04	69	2.19	90	8.96	9.4
22	George Bradley G. Bradley	0.60	573.0	1876	STL	64	45	19	.703	64	1.23	103	63	16	0	470	78	229	3	38		0		2,269	34	1.62	2.71	0.05	4.5	1.7	0.89		3.60	58	2.14	101	7.38	-20.7
23	Henry Boyle H. Boyle	0.60	150.0	1884	SLU	19	15	3	.833	16	1.74	88	16	2	1	118	29	63	3	10		3		595	3	5.28	8.80	0.18	14.8	1.7	0.85		3.78	59	2.56	100	7.08	-1.1
24	George Bradley G. Bradley	0.61	342.0	1884	CNU	41	25	15	.625	38	2.71	168	36	3	0	350	103	203	7	23		3		1,437	12	4.42	7.30	0.18	11.7	1.6	1.09		5.34	85	2.76	99	9.21	5.2
25	Harry McCormick H. McCormick	0.61	457.1	1879	SYR	54	18	33	.353	54	2.99	96	49	5	0	517	152	291	3	31		4		1,975	31	1.89	3.10	0.06	4.9	1.6	1.20		5.73	126	2.61	110	10.17	-20.1