most walks by a player in a season with at least 500 ab

Babe Ruth has the most walks with 500+ at-bats in a season, with 170 walks in 1923.

	NAME	BB	AB	SEASON	TM	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	Babe Ruth B. Ruth	170	522	1923	NYY	152	151	205	45	13	41	130	4	93	17	21	699	399	99	3				.393	.545	.764	1.309	211	124.7	.571	230	120.4
2	Mark McGwire M. McGwire	162	509	1998	STL	155	130	152	21	0	70	147	6	155	1	0	681	383	91	0	4	28	8	.299	.470	.752	1.222	176	91.7	.492	205	90.7
3	Ted Williams T. Williams	162	566	1949	BSA	155	150	194	39	3	43	159	2	48	1	1	730	368	85	0			22	.343	.490	.650	1.141	182	95.5	.511	187	82.2
4	Ted Williams T. Williams	162	528	1947	BSA	156	125	181	40	9	32	114	2	47	0	1	693	335	81	1			10	.343	.499	.634	1.133	170	91.3	.508	207	86.2
5	Ted Williams T. Williams	156	514	1946	BSA	150	142	176	37	8	38	123	2	44	0	0	672	343	83	0			12	.342	.497	.667	1.164	166	95.8	.525	214	87.5
6	Barry Bonds B. Bonds	151	517	1996	SFG	158	122	159	27	3	42	129	1	76	40	7	675	318	72	0	6	30	11	.308	.461	.615	1.076	151	63.7	.446	179	67.8
7	Eddie Yost E. Yost	151	515	1956	WSH	152	94	119	17	2	11	53	8	82	8	5	684	173	30	9	1	9	8	.231	.412	.336	.748	95	15.5	.354	109	7.8
8	Jeff Bagwell J. Bagwell	149	562	1999	HOU	162	143	171	35	0	42	126	11	127	30	11	729	332	77	0	7	16	18	.304	.454	.591	1.045	159	63.9	.442	166	65.7
9	Eddie Joost E. Joost	149	525	1949	PHA	144	128	138	25	3	23	81	4	80	2	1	682	238	51	4			6	.263	.429	.453	.883	120	39.3	.417	136	31.7
10	Eddie Stanky E. Stanky	148	555	1945	BKN	153	128	143	29	5	1	39	4	42	6		726	185	35	19			7	.258	.417	.333	.751	103	24.4	.375	117	15.2
11	Jimmy Sheckard J. Sheckard	147	539	1911	CHC	156	121	149	26	11	4	50	3	58	32		704	209	41	15				.276	.434	.388	.822	120	36.6	.406	137	33
12	Juan Soto J. Soto	145	502	2021	WSH	151	111	157	20	2	29	95	2	93	9	7	654	268	51	0	5	23	23	.313	.465	.534	.999	136	57.3	.420	164	53.2
13	Barry Bonds B. Bonds	145	532	1997	SFG	159	123	155	26	5	40	101	8	87	37	8	690	311	71	0	5	34	13	.291	.446	.585	1.031	141	56.1	.430	165	57
14	Harmon Killebrew H. Killebrew	145	555	1969	MIN	162	106	153	20	2	49	140	5	84	8	2	709	324	71	0	4	20	16	.276	.427	.584	1.011	143	67.4	.441	173	59.9
15	Ted Williams T. Williams	145	522	1942	BSA	150	141	186	34	5	36	137	4	51	3	2	671	338	75	0			12	.356	.499	.648	1.147	168	96.2	.524	209	86.5
16	Babe Ruth B. Ruth	145	540	1921	NYY	152	177	204	44	16	59	168	4	81	17	13	693	457	119	4				.378	.512	.846	1.359	214	127.8	.575	224	118.7
17	Ted Williams T. Williams	144	531	1951	BSA	148	109	169	28	4	30	126	0	45	1	1	675	295	62	0			10	.318	.464	.556	1.019	146	66.5	.463	166	55.4
18	Eddie Stanky E. Stanky	144	527	1950	NYG	152	115	158	25	5	8	51	12	50	9		691	217	38	8			8	.300	.460	.412	.872	126	39.8	.417	141	36.8
19	Joey Votto J. Votto	143	545	2015	CIN	158	95	171	33	2	29	80	5	135	11	3	695	295	64	0	2	15	11	.314	.459	.541	1.000	141	63.1	.427	173	59.5
20	Gary Sheffield G. Sheffield	142	519	1996	FLA	161	118	163	33	1	42	120	10	66	16	9	677	324	76	0	6	19	16	.314	.465	.624	1.090	157	69.8	.456	185	73.1
21	Babe Ruth B. Ruth	142	529	1924	NYY	153	143	200	39	7	46	124	4	81	9	13	681	391	92	6				.378	.513	.739	1.252	193	109.2	.549	210	102
22	Eddie Yost E. Yost	141	573	1950	WSH	155	114	169	26	2	11	58	8	63	6	6	731	232	39	9			13	.295	.440	.405	.845	125	34.1	.403	125	25.4
23	Frank Thomas F. Thomas	138	559	1991	CWS	158	104	178	31	2	32	109	1	112	1	2	700	309	65	0	2	13	20	.318	.453	.553	1.006	146	66.8	.442	179	65.4
24	Jason Giambi J. Giambi	137	510	2000	OAK	152	108	170	29	1	43	137	9	96	2	0	664	330	73	0	8	6	9	.333	.476	.647	1.123	163	75.5	.471	182	74.3
25	Ralph Kiner R. Kiner	137	531	1951	PIT	151	124	164	31	6	42	109	2	57	2	1	670	333	79	0			10	.309	.452	.627	1.079	153	74.7	.479	179	65.8