all-time record most walks in a season by a single player

Amos Rusie has allowed the most walks in a season, with 289 allowed in 1890.

Interpreted as:

all-time record most walks with a minimum of 1 IP per team game in a season by a single player

	NAME	BB	REC	SEASON	TM	W%	G	W	L	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Amos Rusie A. Rusie	289	29-34	1890	NYN	.460	67	29	34	62	2.56	341	56	4	1	548.2	436	156	300	3	26	5		2,379	36	5.59	4.74	1.18	0.05	14.3	12.1	1.32	.252	4.92	73	3.47	92	7.15	17.7
2	Mark Baldwin M. Baldwin	274	27-34	1889	COL	.443	63	27	34	59	3.61	368	54	6	1	513.2	458	206	358	9	20	4		2,275	83	6.45	4.80	1.34	0.16	16.2	12.0	1.43	.280	6.27	100	3.52	98	8.02	-3
3	Amos Rusie A. Rusie	270	32-31	1892	NYG	.508	65	32	31	62	2.84	304	59	2	0	541.0	410	171	290	7	12	3		2,314	24	5.06	4.49	1.13	0.12	13.1	11.7	1.26	.234	4.82	89	3.04	96	6.82	5.2
4	Amos Rusie A. Rusie	262	33-20	1891	NYG	.623	61	33	20	57	2.55	337	52	6	1	500.1	391	142	244	6	18	4		2,167	17	6.06	4.71	1.29	0.11	15.6	12.1	1.31	.249	4.39	78	3.02	89	7.03	19
5	Mark Baldwin M. Baldwin	249	33-24	1890	CHP	.579	58	33	24	56	3.35	206	53	1	0	492.0	494	183	321	10	16	2		2,242	25	3.77	4.55	0.83	0.18	9.2	11.1	1.51	.275	5.87	78	3.96	93	9.04	16.6
6	Jack Stivetts J. Stivetts	232	33-22	1891	STL	.600	64	33	22	56	2.86	259	40	3	1	440.0	357	140	237	15	18	8		1,916	28	5.30	4.75	1.12	0.31	13.5	12.1	1.34	.246	4.85	73	3.50	92	7.30	20.1
7	Mark Baldwin M. Baldwin	227	21-28	1891	PIT	.429	53	21	28	51	2.76	197	48	2	1	437.2	385	134	278	10	23	2		1,944	24	4.05	4.67	0.87	0.21	10.1	11.7	1.40	.252	5.72	84	3.64	107	7.92	-14.3
8	Phil Knell P. Knell	226	28-27	1891	COL	.509	58	28	27	52	2.92	228	47	5	0	462.0	363	150	228	4	54	5		2,017	23	4.44	4.40	1.01	0.08	11.3	11.2	1.27	.239	4.44	84	3.47	103	7.07	-13.4
9	Bob Barr B. Barr	219	28-24	1890	ROC	.538	57	28	24	54	3.25	209	52	3	0	493.1	458	178	267	7	14	3		2,152	28	3.81	4.00	0.95	0.13	9.7	10.2	1.37	.265	4.87	88	3.67	106	8.36	-19.2
10	Amos Rusie A. Rusie	218	33-21	1893	NYG	.611	56	33	21	52	3.23	208	50	4	1	482.0	451	173	260	15	16	4		2,111	26	3.88	4.07	0.95	0.28	9.9	10.3	1.39	.264	4.85	71	4.24	94	8.42	12
11	Cy Seymour C. Seymour	213	25-19	1898	NYG	.568	45	25	19	43	3.18	239	39	4	0	356.2	313	126	199	4	32	2		1,581	19	6.03	5.37	1.12	0.10	15.1	13.5	1.47	.283	5.02	90	3.63	103	7.90	-5.4
12	Gus Weyhing G. Weyhing	212	30-21	1889	PHA	.588	54	30	21	53	2.95	213	50	4	0	449.0	382	147	271	15	34	1		1,959	37	4.27	4.25	1.00	0.30	10.9	10.8	1.32	.247	5.43	77	4.13	108	7.66	-15.2
13	Bob Feller B. Feller	208	17-11	1938	CLE	.607	39	17	11	36	4.08	240	20	2	1	277.2	225	126	136	13	7	3		1,248	5	7.78	6.74	1.15	0.42	19.2	16.7	1.56	.272	4.41	86	4.13	91	7.29	13
14	Ed Crane E. Crane	208	16-19	1890	NYP	.457	43	16	19	35	4.63	116	28	0	0	330.1	323	170	280	12	10	7		1,537	36	3.16	5.67	0.56	0.33	7.5	13.5	1.61	.261	7.63	104	4.67	106	8.80	-4.9
15	Toad Ramsey T. Ramsey	207	38-27	1886	LOU	.585	67	38	27	67	2.45	499	66	3	0	588.2	447	160	297	3	12	0		2,477	35	7.63	3.16	2.41	0.05	20.1	8.4	1.11	.253	4.54	71	2.59	76	6.83	54.7
16	Ice Box Chamberlain I. Box Chamberlain	206	22-23	1891	PHA	.489	49	22	23	46	4.22	204	44	0	0	405.2	397	190	263	10	12	3		1,822	21	4.53	4.57	0.99	0.22	11.2	11.3	1.49	.278	5.83	113	3.46	96	8.81	8.2
17	Mike Morrison M. Morrison	205	12-25	1887	CLE	.324	40	12	25	40	4.92	158	35	0	0	316.2	385	173	341	13	22	1		1,536	62	4.49	5.83	0.77	0.37	10.3	13.3	1.86	.327	9.69	115	4.96	120	10.94	-29.7
18	Nolan Ryan N. Ryan	204	19-16	1977	CAL	.543	37	19	16	37	2.77	341	22	4	0	299.0	198	92	110	12	9	0	7	1,272	21	10.26	6.14	1.67	0.36	26.8	16.0	1.34	.263	3.31	72	3.11	79	5.96	27.9
19	Henry Gruber H. Gruber	204	22-23	1890	CLP	.489	48	22	23	44	4.27	110	39	1	0	383.1	464	182	352	15	15	4		1,839	36	2.58	4.79	0.54	0.35	6.0	11.1	1.74	.300	8.26	105	4.56	113	10.89	-27.7
20	Ed Crane E. Crane	203	18-22	1891	TOT	.450	47	18	22	44	2.97	173	36	2	0	366.2	350	121	242	6	17	3		1,663	21	4.25	4.98	0.85	0.15	10.4	12.2	1.51	.272	5.94	82	3.60	98	8.59	5.6
21	John Clarkson J. Clarkson	203	49-19	1889	BSN	.721	73	49	19	72	2.73	284	68	8	1	620.0	589	188	280	16	17	1		2,641	16	4.12	2.95	1.40	0.23	10.8	7.7	1.28	.270	4.06	65	3.49	82	8.55	56.6
22	Nolan Ryan N. Ryan	202	22-16	1974	CAL	.579	42	22	16	41	2.89	367	26	3	0	332.2	221	107	127	18	9	1	3	1,392	9	9.93	5.46	1.82	0.49	26.4	14.5	1.27	.255	3.44	85	2.97	84	5.98	20.2
23	Ellsworth Cunningham E. Cunningham	201	12-24	1890	TOT	.333	39	12	24	36	5.63	111	35	2	0	319.2	384	200	293	8	13	3		1,562	30	3.13	5.66	0.55	0.23	7.1	12.9	1.83	.306	8.25	135	4.55	110	10.81	-15.1
24	Amos Rusie A. Rusie	200	36-13	1894	NYG	.735	54	36	13	50	2.78	195	45	3	1	444.0	426	137	228	10	5	4		1,910	10	3.95	4.05	0.98	0.20	10.2	10.5	1.41	.277	4.62	53	4.61	88	8.64	28.2
25	William Hutchinson W. Hutchinson	199	41-25	1890	CHN	.621	71	41	25	66	2.70	289	65	5	2	603.0	505	181	315	20	13	5		2,506	27	4.31	2.97	1.45	0.30	11.5	7.9	1.17	.244	4.70	71	3.44	84	7.54	50.1