player with lowest bb/9 in a season since 1900, minimum 100 ip

Since 1900, Carlos Silva has walked the worst walks per nine innings with 100.0+ innings pitched in a season, with 0.43 BB/9 in 2005.

	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	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
2	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
3	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
4	Earl Yingling E. Yingling	0.61	146.2	1913	BKN	26	8	8	.500	13	2.58	40	8	2	0	158	42	56	2	10	2	11		587	4	2.45	4.00	0.12	6.8	1.7	1.15	.293	3.44	79	2.43	76	9.70	12.5
5	Babe Adams B. Adams	0.62	263.0	1920	PIT	35	17	13	.567	33	2.16	84	18	8	2	240	63	83	6	18	1	2		1,035	5	2.87	4.67	0.21	8.1	1.7	0.98	.253	2.84	68	2.62	79	8.21	20.2
6	Christy Mathewson C. Mathewson	0.62	306.0	1913	NYG	40	25	11	.694	35	2.06	93	25	4	2	291	70	94	8	21	0	5		1,195	3	2.74	4.43	0.24	7.8	1.8	1.02	.264	2.76	66	2.49	81	8.56	19.2
7	Bret Saberhagen B. Saberhagen	0.66	177.1	1994	NYM	24	14	4	.778	24	2.74	143	4	0	0	169	54	58	13	13	4	0	0	696	0	7.26	11.00	0.66	20.5	1.9	1.03	.298	2.94	67	2.75	65	8.58	29.4
8	Christy Mathewson C. Mathewson	0.66	312.0	1914	NYG	41	24	13	.649	35	3.00	80	29	5	2	314	104	133	16	23	2	6		1,251	7	2.31	3.48	0.46	6.4	1.8	1.08	.264	3.84	111	2.83	98	9.06	0.5
9	Clayton Kershaw C. Kershaw	0.66	149.0	2016	LAD	21	12	4	.750	21	1.69	172	3	3	0	97	28	31	8	11	2	0	1	544	5	10.39	15.64	0.48	31.6	2.0	0.72	.254	1.87	42	1.79	44	5.86	37.9
10	Deacon Phillippe D. Phillippe	0.67	121.2	1910	PIT	31	14	2	.875	8	2.29	30	5	1	4	111	31	46	4	9	3	19		477	0	2.22	3.33	0.30	6.3	1.9	0.99	.248	3.40	77	2.55	87	8.21	4.9
11	Phil Hughes P. Hughes	0.69	209.2	2014	MIN	32	16	10	.615	32	3.52	186	1	0	0	221	82	88	16	16	5	0	1	855	1	7.98	11.63	0.69	21.8	1.9	1.13	.324	3.78	90	2.65	69	9.49	27.2
12	Cy Young C. Young	0.69	380.0	1904	BSA	43	26	16	.619	41	1.97	200	40	10	1	327	83	104	6	29	4	2		1,435	4	4.74	6.90	0.14	13.9	2.0	0.94	.268	2.46	74	1.83	72	7.74	31.1
13	Dan Quisenberry D. Quisenberry	0.71	139.0	1983	KCR	69	5	3	.625	0	1.94	48	0	0	45	118	30	35	6	11	0	62	2	536	0	3.11	4.36	0.39	9.0	2.1	0.93	.238	2.27	48	2.85	73	7.64	16.6
14	Red Lucas R. Lucas	0.74	219.2	1933	CIN	29	10	16	.385	29	3.40	40	21	3	0	248	83	106	13	18	2	0		902	1	1.64	2.22	0.53	4.4	2.0	1.21	.283	4.34	104	3.48	99	10.16	0.1
15	Cliff Lee C. Lee	0.76	212.1	2010	TOT	28	12	9	.571	28	3.18	185	7	1	0	195	75	84	16	18	1	0	2	843	3	7.84	10.28	0.68	21.9	2.1	1.00	.287	3.56	75	2.58	61	8.27	38.1
16	Jon Lieber J. Lieber	0.77	141.0	2002	CHC	21	6	8	.429	21	3.70	87	3	0	0	153	58	64	15	12	1	0	2	582	0	5.55	7.25	0.96	14.9	2.1	1.17	.296	4.09	92	3.38	81	9.77	12.7
17	Bob Tewksbury B. Tewksbury	0.77	233.0	1992	STL	33	16	5	.762	32	2.16	91	5	0	0	217	56	63	15	20	3	1	0	915	2	3.52	4.55	0.58	9.9	2.2	1.02	.257	2.43	62	3.13	89	8.38	9.9
18	Greg Maddux G. Maddux	0.77	232.2	1997	ATL	33	19	4	.826	33	2.20	177	5	2	0	200	57	58	9	20	6	0	6	893	0	6.85	8.85	0.35	19.8	2.2	0.95	.280	2.24	53	2.42	58	7.74	46.2
19	Cy Young C. Young	0.78	287.2	1906	BSA	39	13	21	.382	34	3.19	140	28	0	2	288	102	137	3	25	8	4		1,126	5	4.38	5.60	0.09	12.4	2.2	1.09	.300	4.29	119	1.87	73	9.01	22.6
20	Babe Adams B. Adams	0.79	263.1	1919	PIT	34	17	10	.630	29	1.98	92	23	6	1	213	58	66	1	23	3	5		1,017	2	3.14	4.00	0.03	9.0	2.3	0.90	.236	2.26	67	2.13	72	7.28	24.9
21	Babe Adams B. Adams	0.79	171.1	1922	PIT	27	8	11	.421	19	3.57	39	12	4	1	191	68	77	1	15	4	4		707	1	2.05	2.60	0.05	5.5	2.1	1.20	.293	4.04	87	2.96	73	10.03	20.4
22	Dan Quisenberry D. Quisenberry	0.79	136.2	1982	KCR	72	9	7	.563	0	2.57	46	0	0	35	126	39	43	12	12	0	68	2	529	1	3.03	3.83	0.79	8.7	2.3	1.01	.248	2.83	63	3.44	86	8.30	8.8
23	Slim Sallee S. Sallee	0.79	227.2	1919	CIN	29	21	7	.750	28	2.06	24	22	4	0	221	52	63	4	20	1	1		893	0	0.95	1.20	0.16	2.7	2.2	1.06	.257	2.49	74	2.78	98	8.74	0.6
24	Slim Sallee S. Sallee	0.82	132.0	1918	NYG	18	8	8	.500	16	2.25	33	12	1	2	122	33	44	3	12	0	2		531	1	2.25	2.75	0.20	6.2	2.3	1.02	.246	3.00	84	2.30	88	8.32	4.4
25	Addie Joss A. Joss	0.83	325.0	1908	CLE	42	24	11	.686	35	1.16	130	29	9	2	232	42	77	2	30	2	6		1,209	6	3.60	4.33	0.06	10.8	2.5	0.81	.220	2.13	49	1.68	76	6.42	19.3