Since 1993, Todd Van Poppel has walked the best walks per nine innings in a season, with 6.87 BB/9 in 1994.

Interpreted as:

highest bb/9 with a minimum of 1 IP per team game by a player in a season since 1993

	NAME	BB/9	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	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	Todd Van Poppel T. Van Poppel	6.87	1994	OAK	23	7	10	.412	23	6.09	83	0	0	0	116.2	108	79	80	20	89	3	0	2	532	3	6.40	0.93	1.54	15.6	16.7	1.69	.261	6.17	132	6.29	134	8.33	-21.1
2	Rich Robertson R. Robertson	5.60	1996	MIN	36	7	17	.292	31	5.12	114	5	3	0	186.1	197	106	113	22	116	9	1	2	853	7	5.51	0.98	1.06	13.4	13.6	1.68	.296	5.46	102	5.49	112	9.52	-11.9
3	Matt Clement M. Clement	5.49	2000	SDP	34	13	17	.433	34	5.14	170	0	0	0	205.0	194	117	131	22	125	16	0	4	940	23	7.46	1.36	0.97	18.1	13.3	1.56	.283	5.75	119	4.93	109	8.52	-10.1
4	Russ Ortiz R. Ortiz	5.42	1999	SFG	33	18	9	.667	33	3.81	164	3	0	0	207.2	189	88	109	24	125	6	0	5	922	13	7.11	1.31	1.04	17.8	13.6	1.51	.274	4.72	87	4.94	108	8.19	-8.7
5	Al Leiter A. Leiter	5.31	1995	TOR	28	11	11	.500	28	3.64	153	2	1	0	183.0	162	74	80	15	108	6	0	1	805	14	7.52	1.42	0.74	19.0	13.4	1.48	.281	3.93	77	4.36	92	7.97	7.4
6	Wilson Alvarez W. Alvarez	5.29	1993	CWS	31	15	8	.652	31	2.95	155	1	1	0	207.2	168	68	78	14	122	7	0	8	877	2	6.72	1.27	0.61	17.7	13.9	1.40	.266	3.38	70	4.22	99	7.28	0.9
7	Ricky Romero R. Romero	5.22	2012	TOR	32	9	14	.391	32	5.77	124	1	0	0	181.0	198	116	122	21	105	10	0	1	829	8	6.17	1.18	1.04	15.0	12.7	1.67	.311	6.07	137	5.13	122	9.85	-18
8	Tony Saunders T. Saunders	5.19	1998	TBD	31	6	15	.286	31	4.12	172	2	0	0	192.1	191	88	95	15	111	7	0	1	855	2	8.05	1.55	0.70	20.1	13.0	1.57	.320	4.45	88	4.20	92	8.94	7.9
9	Mike Moore M. Moore	5.19	1994	DET	25	11	10	.524	25	5.42	62	4	0	0	154.1	152	93	97	27	89	3	0	8	679	10	3.62	0.70	1.57	9.1	13.1	1.56	.251	5.66	112	6.38	132	8.86	-26
10	Edinson Volquez E. Volquez	5.17	2012	SDP	32	11	11	.500	32	4.14	174	1	1	0	182.2	160	84	88	14	105	9	0	6	802	9	8.57	1.66	0.69	21.7	13.1	1.45	.292	4.34	114	4.05	107	7.88	-5.8
11	Russ Ortiz R. Ortiz	5.15	2000	SFG	33	14	12	.538	32	5.01	167	0	0	0	195.2	192	109	117	28	112	7	0	1	871	8	7.68	1.49	1.29	19.2	12.9	1.55	.294	5.38	113	5.10	114	8.83	-15
12	Brandon Webb B. Webb	5.15	2004	ARI	35	7	16	.304	35	3.59	164	1	0	0	208.0	194	83	111	17	119	11	0	11	933	17	7.10	1.38	0.74	17.6	12.8	1.50	.285	4.80	79	4.40	97	8.39	3.2
13	Darryl Kile D. Kile	5.15	1999	COL	32	8	13	.381	32	6.61	116	1	0	0	190.2	225	140	150	33	109	6	0	5	888	13	5.48	1.06	1.56	13.1	12.3	1.75	.308	7.08	119	5.97	117	10.62	-16.2
14	Kaz Ishii K. Ishii	5.13	2004	LAD	31	13	8	.619	31	4.71	99	2	2	0	172.0	155	90	97	21	98	4	0	2	749	3	5.18	1.01	1.10	13.2	13.1	1.47	.254	5.08	114	5.26	119	8.11	-16.3
15	Pat Rapp P. Rapp	5.11	1998	KCR	32	12	13	.480	32	5.30	132	1	1	0	188.1	208	111	117	24	107	10	0	7	855	14	6.31	1.23	1.15	15.4	12.5	1.67	.316	5.59	112	5.25	113	9.94	-12
16	Shawn Estes S. Estes	5.11	2000	SFG	30	15	6	.714	30	4.26	136	4	2	0	190.1	194	90	99	11	108	3	0	1	829	11	6.43	1.26	0.52	16.4	13.0	1.59	.320	4.68	96	4.20	94	9.17	5.6
17	Barry Zito B. Zito	5.10	2008	SFG	32	10	17	.370	32	5.15	120	0	0	0	180.0	186	103	115	16	102	4	0	10	818	3	6.00	1.18	0.80	14.7	12.5	1.60	.295	5.75	120	4.71	111	9.30	-10
18	Jason Bere J. Bere	5.08	1994	CWS	24	12	2	.857	24	3.81	127	0	0	0	141.2	119	60	65	17	80	1	0	0	608	2	8.07	1.59	1.08	20.9	13.2	1.40	.266	4.13	83	4.61	98	7.56	1.2
19	Victor Zambrano V. Zambrano	5.07	2003	TBD	34	12	10	.545	28	4.21	132	1	0	0	188.1	165	88	97	21	106	20	2	2	836	15	6.31	1.25	1.00	15.8	12.7	1.44	.259	4.64	94	5.08	115	7.88	-14.1
20	Daisuke Matsuzaka D. Matsuzaka	5.05	2008	BOS	29	18	3	.857	29	2.90	154	0	0	0	167.2	128	54	58	12	94	7	0	1	716	5	8.27	1.64	0.64	21.5	13.1	1.32	.258	3.11	64	4.02	96	6.87	2.9
21	Pat Rapp P. Rapp	5.05	1996	FLA	30	8	16	.333	29	5.10	86	0	0	0	162.1	184	92	95	12	91	3	1	6	728	13	4.77	0.95	0.67	11.8	12.5	1.69	.321	5.27	124	4.80	113	10.20	-10.1
22	Tom Gordon T. Gordon	5.04	1994	KCR	24	11	7	.611	24	4.35	126	0	0	0	155.1	136	75	79	15	87	3	0	3	675	12	7.30	1.45	0.87	18.7	12.9	1.44	.273	4.58	90	4.49	96	7.88	3.3
23	Al Leiter A. Leiter	5.03	2004	NYM	30	10	8	.556	30	3.21	117	0	0	0	173.2	138	62	65	16	97	11	0	8	750	1	6.06	1.21	0.83	15.6	12.9	1.35	.240	3.37	77	4.76	110	7.15	-8.9
24	Dave Fleming D. Fleming	5.00	1994	SEA	23	7	11	.389	23	6.46	65	0	0	0	117.0	152	84	93	17	65	1	0	4	561	4	5.00	1.00	1.31	11.6	11.6	1.85	.327	7.15	135	5.59	118	11.69	-11.2
25	Damian Moss D. Moss	5.00	2003	TOT	31	10	12	.455	29	5.16	79	0	0	0	165.2	184	95	102	24	92	11	0	5	762	12	4.29	0.86	1.30	10.4	12.1	1.67	.288	5.54	122	5.82	135	10.00	-28.7