lowest bb/9 in a single season with at least 100 innings pitched since 1950

Since 1950, Carlos Silva has walked the lowest walks per nine innings with 100.0+ innings pitched in a season, with 0.43 BB/9 in 2005.

Interpreted as:

lowest bb/9 by a player in a single season with at least 100 innings pitched since 1950

	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	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	Bret Saberhagen B. Saberhagen	0.83	119.0	1999	BOS	22	10	6	.625	22	2.95	81	0	0	0	122	39	43	11	11	2	0	0	480	1	6.13	7.36	0.83	16.9	2.3	1.12	.296	3.25	60	3.29	71	9.23	18.3
14	Dan Quisenberry D. Quisenberry	0.84	129.1	1984	KCR	72	6	3	.667	0	2.64	41	0	0	44	121	38	39	10	12	0	67	4	506	0	2.85	3.42	0.70	8.1	2.4	1.03	.251	2.71	66	3.41	87	8.42	7.5
15	Bob Tewksbury B. Tewksbury	0.84	213.2	1993	STL	32	17	10	.630	32	3.83	97	2	0	0	258	91	99	15	20	6	0	1	907	2	4.09	4.85	0.63	10.7	2.2	1.30	.316	4.17	97	3.35	84	10.87	15.7
16	David Wells D. Wells	0.85	213.0	2003	NYY	31	15	7	.682	30	4.14	101	4	1	0	242	98	101	24	20	8	0	0	887	3	4.27	5.05	1.01	11.4	2.3	1.23	.297	4.27	92	3.94	88	10.23	12.4
17	LaMarr Hoyt L. Hoyt	0.86	210.1	1985	SDP	31	16	8	.667	31	3.47	83	8	3	0	210	81	85	20	20	2	0	2	839	0	3.55	4.15	0.86	9.9	2.4	1.09	.266	3.64	99	3.44	93	8.99	6
18	Josh Tomlin J. Tomlin	0.89	141.0	2017	CLE	26	10	9	.526	26	4.98	109	1	0	0	166	78	80	23	14	4	0	0	585	1	6.96	7.79	1.47	18.6	2.4	1.28	.329	5.11	110	4.11	94	10.60	4.4
19	George Kirby G. Kirby	0.90	190.2	2023	SEA	31	12	10	.545	31	3.35	172	1	0	0	179	71	74	22	19	6	0	1	757	1	8.12	9.05	1.04	22.7	2.5	1.04	.292	3.49	83	3.34	81	8.45	16.7
20	Jon Lieber J. Lieber	0.92	176.2	2004	NYY	27	14	8	.636	27	4.33	102	0	0	0	216	85	95	20	18	2	0	2	749	7	5.20	5.67	1.02	13.6	2.4	1.32	.323	4.84	95	3.70	83	11.00	15.3
21	David Wells D. Wells	0.92	195.2	2004	SDP	31	12	8	.600	31	3.73	101	0	0	0	203	81	85	23	20	2	0	1	804	2	4.65	5.05	1.06	12.6	2.5	1.14	.274	3.91	94	3.87	92	9.34	7.6
22	Phil Hughes P. Hughes	0.93	155.1	2015	MIN	27	11	9	.550	25	4.40	94	1	0	0	184	76	76	29	16	2	1	0	651	1	5.45	5.88	1.68	14.4	2.5	1.29	.304	4.40	108	4.69	115	10.66	-10.5
23	Bob Tewksbury B. Tewksbury	0.93	145.1	1990	STL	28	10	9	.526	20	3.47	50	3	2	1	151	56	67	7	15	3	1	3	595	2	3.10	3.33	0.43	8.4	2.5	1.14	.277	4.15	91	3.11	82	9.35	10.9
24	Ben Sheets B. Sheets	0.93	106.0	2006	MIL	17	6	7	.462	17	3.82	116	0	0	0	105	45	47	9	11	2	0	1	430	3	9.85	10.55	0.76	27.0	2.6	1.09	.329	3.99	85	2.42	54	8.92	24.8
25	Bryan Woo B. Woo	0.96	121.1	2024	SEA	22	9	3	.750	22	2.89	101	0	0	0	96	39	41	14	13	3	0	0	472	0	7.49	7.77	1.04	21.4	2.8	0.90	.240	3.04	77	3.39	86	7.12	7.3