which mlb player has the worst walk stats with over 500 at bats

Brad Penny has the fewest career walks with >500 at-bats, with 3 bases on balls.

	NAME	BB	AB	G	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Brad Penny B. Penny	3	529	288	27	83	17	2	3	34	3	173	0	0	578	113	22	43	0	0	4	.157	.166	.214	.380	-7	-77.8	.167	-6	-78.8
2	Eric Show E. Show	4	506	295	33	81	10	0	4	28	3	179	0	0	554	103	14	40	1	0	7	.160	.171	.204	.375	-2	-64.7	.169	0	-64
3	J.R. Richard	4	552	235	39	93	10	3	10	50	2	181	2	2	602	139	23	41	3	0	11	.168	.176	.252	.428	8	-58.4	.192	18	-56.3
4	Aaron Harang A. Harang	5	670	335	16	65	8	0	1	21	2	294	0	0	747	76	9	69	1	0	11	.097	.106	.113	.220	-49	-136.9	.099	-53	-140.8
5	Pedro Astacio P. Astacio	5	677	372	31	90	8	1	0	28	5	256	0	1	775	100	9	88	0	0	5	.133	.146	.148	.293	-33	-129.3	.133	-39	-138.1
6	Gene Conley G. Conley	5	548	276	33	105	19	1	5	45	4	119	0	1	592	141	25	31	4	0	9	.192	.203	.257	.461	13	-54.5	.206	20	-58.3
7	Jim Holdsworth J. Holdsworth	5	522	113	50	132	8	4	0						527	148	12					.253	.260	.284	.543	65	-12.7	.252	87	-10.4
8	Ramon Martinez R. Martinez	7	596	275	33	91	12	1	1	33	1	200	0	2	674	108	14	68	2	0	4	.153	.163	.181	.345	-12	-91.9	.156	-10	-89.2
9	Al Benton A. Benton	7	512	455	22	50	7	0	0	14	1	200	0	0	579	57	7	59			13	.098	.112	.111	.223	-35	-101.8	.107	-50	-110.6
10	Jerry McCormick J. McCormick	7	841	202	104	220	36	10	0						848	276	46					.262		.328		117	-8.5	.270	96	-4.7
11	Bill Hawes B. Hawes	7	504	117	99	128	10	7	4						511	164	21					.254		.325		70	-3.4	.268	93	-4.9
12	Dick Higham D. Higham	7	598	130	120	193	43	3	1						605	245	47					.323		.410		116	29	.341	129	25.9
13	Fernando Valenzuela F. Valenzuela	8	936	439	56	187	26	1	10	84	0	145	0	2	1,043	245	37	93	6	0	12	.200	.205	.262	.467	27	-93	.208	26	-90.2
14	Dave Roberts D. Roberts	8	531	355	28	103	15	4	7	46	0	133	0	1	590	147	26	45	6	0	10	.194	.204	.277	.481	18	-44.9	.216	30	-47.6
15	Catfish Hunter C. Hunter	8	658	302	60	149	16	3	6	51	0	160	2	0	710	189	25	39	5	0	10	.226	.234	.287	.521	35	-37.5	.235	49	-39.5
16	Jim Bagby J. Bagby	8	620	322	59	140	16	2	3	56	3	68	1		663	169	21	32			14	.226	.239	.273	.512	29	-45.5	.240	38	-52.4
17	Slim Harriss S. Harriss	8	565	349	21	82	4	0	1	30	2	172	0		612	89	5	37				.145	.160	.158	.318	-20	-95.3	.151	-26	-103.7
18	Tom Carey T. Carey	8	1,151	269	152	288	34	6	1						1,159	337	41					.250		.293		142	-23.2	.252	86	-23.8
19	Jim Devlin J. Devlin	8	566	129	76	166	20	4	1						574	197	25					.293		.348		93	8.1	.301	98	-2
20	Kyle Lohse K. Lohse	9	509	293	23	78	9	0	0	31	4	163	0	1	600	87	9	75	3	0	5	.153	.173	.171	.344	-10	-79.4	.156	-14	-82.1
21	Don Wilson D. Wilson	9	597	268	36	87	18	1	1	35	13	230	0	0	664	110	20	42	3	0	12	.146	.175	.184	.359	0	-68.6	.168	4	-72.1
22	Tony Cloninger T. Cloninger	9	621	366	65	119	16	2	11	67	2	161	2	1	673	172	29	39	2	0	6	.192	.205	.277	.482	25	-47.1	.216	33	-52.4
23	Mike Cuellar M. Cuellar	9	661	316	37	76	8	4	7	33	1	304	0	0	716	113	19	43	2	0	5	.115	.128	.171	.299	-17	-90.9	.136	-18	-94.9
24	Virgil Trucks V. Trucks	9	949	516	63	171	23	1	2	70	2	153	1	1	1,009	202	26	46	3	0	31	.180	.189	.213	.402	2	-112.6	.186	0	-122
25	Dizzy Dean D. Dean	9	717	324	76	161	23	4	8	76	1	104	5		766	216	35	39				.225	.235	.301	.536	36	-59.2	.245	35	-61.8