Cy Young walked his highest walks per nine innings in a season in 1891, with 2.97 BB/9.

Interpreted as:

highest bb/9 in a regular season while winning the Cy Young

	NAME	BB/9	W	SEASON	TM	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Cy Young C. Young	2.97	27	1891	CLE	22	.551	55	46	2.85	147	43	0	2	423.2	431	134	244	4	140	10	8	1,848	12	3.12	1.05	0.08	8.0	7.6	1.35	.276	5.18	83	3.02	85	9.16	28.4
2	Cy Young C. Young	2.34	36	1892	CLE	12	.750	53	49	1.93	168	48	9	0	453.0	363	97	158	8	118	8	4	1,847	13	3.34	1.42	0.16	9.1	6.4	1.06	.230	3.14	57	2.76	82	7.21	33.4
3	Cy Young C. Young	2.33	26	1894	CLE	21	.553	52	47	3.94	108	44	2	1	408.2	488	179	265	19	106	6	5	1,777	4	2.38	1.02	0.42	6.1	6.0	1.45	.305	5.84	72	4.71	86	10.75	37.2
4	Cy Young C. Young	2.19	34	1893	CLE	16	.680	53	46	3.36	102	42	1	1	422.2	442	158	230	10	103	10	7	1,806	14	2.17	0.99	0.21	5.6	5.7	1.29	.273	4.90	70	3.87	81	9.41	45.2
5	Cy Young C. Young	1.99	7	1911	TOT	9	.438	18	18	3.78	55	12	2	0	126.1	137	53	75	6	28	4	0	523	6	3.92	1.96	0.43	10.5	5.4	1.31	.305	5.34	107	3.27	92	9.76	4.6
6	Cy Young C. Young	1.83	9	1890	CLN	7	.563	17	16	3.47	39	16	0	0	147.2	145	57	87	6	30	8	1	621	7	2.38	1.30	0.37	6.3	4.8	1.19	.258	5.30	98	3.69	97	8.84	2.1
7	Cy Young C. Young	1.83	35	1895	CLE	10	.778	47	40	3.26	121	36	4	0	369.2	363	134	177	10	75	8	7	1,518	6	2.95	1.61	0.24	8.0	4.9	1.18	.271	4.31	66	3.95	80	8.84	43.3
8	Cy Young C. Young	1.80	19	1909	CLE	15	.559	35	34	2.26	109	30	3	0	294.1	267	74	110	4	59	8	1	1,137	6	3.33	1.85	0.12	9.6	5.2	1.11	.275	3.36	92	2.34	98	8.16	1
9	Cy Young C. Young	1.49	7	1910	CLE	10	.412	21	20	2.53	58	14	1	0	163.1	149	46	62	0	27	4	0	623	7	3.20	2.15	0.00	9.3	4.3	1.08	.279	3.42	99	2.18	83	8.21	8.6
10	Cy Young C. Young	1.35	28	1896	CLE	15	.651	51	46	3.24	140	42	5	3	414.1	477	149	214	7	62	11	4	1,739	10	3.04	2.26	0.15	8.1	3.6	1.30	.309	4.65	72	3.36	75	10.36	52.8
11	Cy Young C. Young	1.34	21	1907	BSA	15	.583	43	37	1.99	147	33	6	2	343.1	286	76	101	3	51	7	5	1,308	6	3.85	2.88	0.08	11.2	3.9	0.98	.257	2.65	77	1.94	80	7.50	18.8
12	Cy Young C. Young	1.31	21	1897	CLE	19	.525	46	38	3.78	88	35	2	0	335.2	391	141	189	7	49	9	7	1,413	14	2.36	1.80	0.19	6.2	3.5	1.31	.305	5.07	88	3.58	83	10.48	26.7
13	Cy Young C. Young	1.24	32	1902	BSA	11	.744	45	43	2.15	160	41	3	0	384.2	350	92	136	6	53	13	1	1,506	3	3.74	3.02	0.14	10.6	3.5	1.05	.270	3.18	60	2.55	74	8.19	37.5
14	Cy Young C. Young	1.11	21	1908	BOS	11	.656	36	33	1.26	150	30	3	2	299.0	230	42	68	1	37	1	3	1,116	4	4.52	4.05	0.03	13.4	3.3	0.89	.247	2.05	52	1.52	67	6.92	25.4
15	Cy Young C. Young	1.07	26	1899	STL	16	.619	44	42	2.58	111	40	4	1	369.1	368	106	173	10	44	6	2	1,468	6	2.70	2.52	0.24	7.6	3.0	1.12	.276	4.22	67	3.09	80	8.97	30.9
16	Cy Young C. Young	1.01	19	1900	STL	19	.500	41	35	3.00	115	32	4	0	321.1	337	107	144	7	36	3	6	1,291	7	3.22	3.19	0.20	8.9	2.8	1.16	.292	4.03	80	2.76	74	9.44	35
17	Cy Young C. Young	0.98	25	1898	CLE	13	.658	46	41	2.53	101	40	1	0	377.2	387	106	167	6	41	9	5	1,520	9	2.41	2.46	0.14	6.6	2.7	1.13	.280	3.98	70	2.84	79	9.22	32.2
18	Cy Young C. Young	0.97	28	1903	BSA	9	.757	40	35	2.08	176	34	7	2	341.2	294	79	115	6	37	9	5	1,314	5	4.64	4.76	0.16	13.4	2.8	0.97	.265	3.03	70	2.35	80	7.74	22.2
19	Cy Young C. Young	0.90	33	1901	BSA	10	.767	43	41	1.62	158	38	5	0	371.1	324	67	112	6	37	7	2	1,440	2	3.83	4.27	0.15	11.0	2.6	0.97	.258	2.71	44	2.64	72	7.85	42.6
20	Cy Young C. Young	0.84	18	1905	BSA	19	.486	38	33	1.82	210	31	4	0	320.2	248	65	99	3	30	8	5	1,189	6	5.89	7.00	0.08	17.7	2.5	0.87	.261	2.78	68	1.69	61	6.96	38.4
21	Cy Young C. Young	0.78	13	1906	BSA	21	.382	39	34	3.19	140	28	0	2	287.2	288	102	137	3	25	8	4	1,126	5	4.38	5.60	0.09	12.4	2.2	1.09	.300	4.29	119	1.87	73	9.01	22.6
22	Cy Young C. Young	0.69	26	1904	BSA	16	.619	43	41	1.97	200	40	10	1	380.0	327	83	104	6	29	4	2	1,435	4	4.74	6.90	0.14	13.9	2.0	0.94	.268	2.46	74	1.83	72	7.74	31.1