highest k% in a single season for a pitcher l

Matt Kilroy has fanned the most batters in a season, with 513 strikeouts in his rookie season in 1886.

	NAME	SO	L	SEASON	TM	W	L%	G	W%	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	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	Matt Kilroy M. Kilroy	513	34	1886	BAL	29	.540	68	.460	68	3.37	66	5	0	583.0	476	218	350	10	182	19	0		2,469	61	7.92	2.81	2.82	0.15	20.8	7.4	1.13	.267	5.40	100	2.60	77	7.35	47
2	Toad Ramsey T. Ramsey	499	27	1886	LOU	38	.415	67	.585	67	2.45	66	3	0	588.2	447	160	297	3	207	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
3	Hugh Daily H. Daily	483	28	1884	TOT	28	.500	58	.500	58	2.43	56	5	0	500.2	446	135	268	11	72		0		2,076	50	8.68	1.29	6.71	0.20	23.3	3.5	1.03		4.82	81	2.06	79	8.02	27.4
4	Dupee Shaw D. Shaw	451	33	1884	TOT	30	.524	67	.476	66	2.30	60	5	0	543.1	446	139	281	9	109		1		2,244	24	7.47	1.81	4.14	0.15	20.1	4.9	1.02		4.65	77	2.43	81	7.39	29
5	Old Hoss Radbourn O. Hoss Radbourn	441	12	1884	PRO	59	.169	75	.831	73	1.38	73	11	2	678.2	528	104	216	18	98		2		2,672	34	5.85	1.30	4.50	0.24	16.5	3.7	0.92		2.86	48	2.75	84	7.00	31.9
6	Charlie Buffinton C. Buffinton	417	16	1884	BSN	48	.250	67	.750	67	2.15	63	8	0	587.0	506	140	225	15	76		0		2,383	24	6.39	1.17	5.49	0.23	17.5	3.2	0.99		3.45	74	2.57	77	7.76	46.8
7	Guy Hecker G. Hecker	385	20	1884	LOU	52	.278	75	.722	73	1.80	72	6	0	670.2	526	134	230	4	56	16	2		2,649	27	5.17	0.75	6.88	0.05	14.5	2.1	0.87	.239	3.09	57	2.53	80	7.06	43
8	Nolan Ryan N. Ryan	383	16	1973	CAL	21	.432	41	.568	39	2.87	26	4	1	326.0	238	104	113	18	162	7	2	2	1,355	15	10.57	4.47	2.36	0.50	28.3	12.0	1.23	.280	3.12	80	2.48	69	6.57	40.9
9	Sandy Koufax S. Koufax	382	8	1965	LAD	26	.235	43	.765	41	2.04	27	8	2	335.2	216	76	90	26	71	5	2	4	1,297	11	10.24	1.90	5.38	0.70	29.5	5.5	0.86	.234	2.41	63	1.93	61	5.79	47.9
10	Bill Sweeney B. Sweeney	374	21	1884	BLU	40	.344	62	.656	60	2.59	58	4	0	538.0	522	155	294	13	74		2		2,270	43	6.26	1.24	5.05	0.22	16.5	3.3	1.11		4.92	80	2.61	93	8.73	19.5
11	Randy Johnson R. Johnson	372	6	2001	ARI	21	.222	35	.778	34	2.49	3	2	0	249.2	181	69	74	19	71	18	1	2	994	8	13.41	2.56	5.24	0.68	37.4	7.1	1.01	.315	2.67	55	2.12	48	6.52	63.9
12	Pud Galvin P. Galvin	369	22	1884	BUF	46	.324	72	.676	72	1.99	71	12	0	636.1	566	141	254	23	63		0		2,554	16	5.22	0.89	5.86	0.33	14.4	2.5	0.99		3.59	64	2.88	82	8.01	50.9
13	Mark Baldwin M. Baldwin	368	34	1889	COL	27	.557	63	.443	59	3.61	54	6	1	513.2	458	206	358	9	274	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
14	Nolan Ryan N. Ryan	367	16	1974	CAL	22	.421	42	.579	41	2.89	26	3	0	332.2	221	107	127	18	202	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
15	Randy Johnson R. Johnson	364	9	1999	ARI	17	.346	35	.654	35	2.48	12	2	0	271.2	207	75	86	30	70	9	0	3	1,079	4	12.06	2.32	5.20	0.99	33.7	6.5	1.02	.292	2.85	53	2.75	59	6.86	57.2
16	Tim Keefe T. Keefe	359	27	1883	NYM	41	.397	68	.603	68	2.41	68	5	0	619.0	488	166	244	6	108		0		2,517	27	5.22	1.57	3.32	0.09	14.3	4.3	0.96		3.55	72	2.74	82	7.10	45.1
17	Toad Ramsey T. Ramsey	355	27	1887	LOU	37	.422	65	.578	64	3.43	61	0	0	561.0	544	214	358	9	167	16	1		2,430	46	5.70	2.68	2.13	0.14	14.6	6.9	1.27	.284	5.74	78	3.20	76	8.73	64.2
18	Rube Waddell R. Waddell	349	19	1904	PHA	25	.432	46	.568	46	1.62	39	8	0	383.0	307	69	109	5	91	14	0		1,496	8	8.20	2.14	3.84	0.12	23.3	6.1	1.04	.291	2.56	61	1.59	62	7.21	41.5
19	Bob Feller B. Feller	348	15	1946	CLE	26	.366	48	.634	42	2.18	36	10	4	371.1	277	90	101	11	153	3	5		1,512	3	8.43	3.71	2.27	0.27	23.0	10.1	1.16	.267	2.45	65	2.16	65	6.71	48.3
20	Randy Johnson R. Johnson	347	7	2000	ARI	19	.269	35	.731	35	2.64	8	3	0	248.2	202	73	89	23	76	6	0	1	1,001	5	12.56	2.75	4.57	0.83	34.7	7.6	1.12	.326	3.22	56	2.53	53	7.31	61.1
21	Hardie Henderson H. Henderson	346	23	1884	BLA	27	.460	52	.540	52	2.62	50	4	0	439.1	382	128	235	9	116	16	0		1,900	45	7.09	2.38	2.98	0.18	18.2	6.1	1.13	.264	4.81	81	2.87	89	7.83	16.5
22	Mickey Welch M. Welch	345	21	1884	NYG	39	.350	65	.650	65	2.50	62	4	0	557.1	528	155	275	12	146		1		2,370	39	5.57	2.36	2.36	0.19	14.6	6.2	1.21		4.44	85	3.10	92	8.53	14.6
23	Jim Whitney J. Whitney	345	21	1883	BSN	37	.362	62	.638	56	2.24	54	1	2	514.0	492	128	258	7	35		5		2,101	37	6.04	0.61	9.86	0.12	16.4	1.7	1.03		4.52	74	2.29	75	8.61	39.8
24	Jim McCormick J. McCormick	343	25	1884	TOT	40	.385	66	.615	65	2.37	63	10	0	569.0	508	150	263	19	89		2		2,336	15	5.43	1.41	3.85	0.30	14.7	3.8	1.05		4.16	80	2.97	94	8.04	9.6
25	Nolan Ryan N. Ryan	341	16	1977	CAL	19	.457	37	.543	37	2.77	22	4	0	299.0	198	92	110	12	204	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