who had the highest single season strikeouts per nine before 1960 with at least 100 innings pitched

Before 1960, Sandy Koufax had the highest K/9 with 100.0+ innings pitched in a season, with 10.52 per nine innings in 1957.

	NAME	K/9	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Sandy Koufax S. Koufax	10.52	104.1	1957	BKN	34	5	4	.556	13	3.88	122	2	0	0	83	45	49	14	51	2	12	1	444	5	4.40	2.39	1.21	27.5	11.5	1.28	.271	4.23	96	3.39	85	7.16	6.8
2	Sandy Koufax S. Koufax	10.15	153.1	1959	LAD	35	8	6	.571	23	4.05	173	6	1	2	136	69	74	23	92	0	6	4	679	5	5.40	1.88	1.35	25.5	13.5	1.49	.289	4.34	98	4.04	99	7.98	0.8
3	Herb Score H. Score	9.70	227.1	1955	CLE	33	16	10	.615	32	2.85	245	11	2	0	158	72	85	18	154	1	0	1	978	12	6.10	1.59	0.71	25.1	15.7	1.37	.250	3.37	72	3.29	84	6.26	15.6
4	Herb Score H. Score	9.49	249.1	1956	CLE	35	20	9	.690	33	2.53	263	16	5	0	162	70	82	18	129	2	1	2	1,022	11	4.66	2.04	0.65	25.7	12.6	1.17	.236	2.96	61	2.77	69	5.85	34.6
5	Bill Bailey B. Bailey	9.16	128.2	1914	BAL	19	7	9	.438	18	3.08	131	10	1	0	106	44	58	2	68	7	0		536	9	4.76	1.93	0.14	24.4	12.7	1.35	.317	4.06	93	2.35	78	7.41	9.6
6	Bob Feller B. Feller	9.08	148.2	1937	CLE	26	9	7	.563	19	3.39	150	9	0	1	116	56	68	4	106	2	4		651	5	6.42	1.42	0.24	23.0	16.3	1.49	.288	4.12	74	3.55	79	7.02	15.6
7	Hugh Daily H. Daily	8.68	500.2	1884	TOT	58	28	28	.500	58	2.43	483	56	5	0	446	135	268	11	72		0		2,076	50	1.29	6.71	0.20	23.3	3.5	1.03		4.82	81	2.06	79	8.02	27.4
8	Juan Pizarro J. Pizarro	8.48	133.2	1959	MIL	29	6	2	.750	14	3.77	126	6	2	0	117	56	61	13	70	8	4	3	578	4	4.71	1.80	0.88	21.8	12.1	1.40	.288	4.11	105	3.67	104	7.88	-3.3
9	Hal Newhouser H. Newhouser	8.46	292.2	1946	DET	37	26	9	.743	34	1.94	275	29	6	1	215	63	77	10	98	1	2		1,176	8	3.01	2.81	0.31	23.4	8.3	1.07	.259	2.37	54	1.96	56	6.61	49.6
10	Bob Feller B. Feller	8.43	371.1	1946	CLE	48	26	15	.634	42	2.18	348	36	10	4	277	90	101	11	153	3	5		1,512	3	3.71	2.27	0.27	23.0	10.1	1.16	.267	2.45	65	2.16	65	6.71	48.3
11	Sam Jones S. Jones	8.40	188.2	1956	CHC	33	9	14	.391	28	3.91	176	8	2	0	155	82	93	21	115	8	3	6	832	2	5.49	1.53	1.00	21.2	13.8	1.43	.262	4.44	103	3.91	99	7.39	0.9
12	Rube Waddell R. Waddell	8.39	324.0	1903	PHA	39	21	16	.568	38	2.44	302	34	4	0	274	88	109	3	85	8	1		1,291	9	2.36	3.55	0.08	23.4	6.6	1.11	.303	3.03	80	1.87	62	7.61	41.9
13	Herb Score H. Score	8.23	160.2	1959	CLE	30	9	11	.450	25	4.71	147	9	1	0	123	84	93	28	115	1	2	0	712	14	6.44	1.28	1.57	20.6	16.2	1.48	.226	5.21	124	5.14	133	6.89	-23.6
14	Rube Waddell R. Waddell	8.20	383.0	1904	PHA	46	25	19	.568	46	1.62	349	39	8	0	307	69	109	5	91	14	0		1,496	8	2.14	3.84	0.12	23.3	6.1	1.04	.291	2.56	61	1.59	62	7.21	41.5
15	Sam Jones S. Jones	8.10	250.0	1958	STL	35	14	13	.519	35	2.88	225	14	2	0	204	80	95	23	107	6	0	5	1,041	7	3.85	2.10	0.83	21.6	10.3	1.24	.266	3.42	71	3.23	80	7.34	22.2
16	Don Drysdale D. Drysdale	8.05	270.2	1959	LAD	44	17	13	.567	36	3.46	242	15	4	2	237	104	113	26	93	18	7	9	1,142	4	3.09	2.60	0.86	21.2	8.1	1.22	.277	3.76	83	3.23	80	7.88	24.4
17	Johnny Vander Meer J. Vander Meer	8.03	226.1	1941	CIN	33	16	13	.552	32	2.82	202	18	6	0	172	71	83	8	126	1	0		945	3	5.01	1.60	0.32	21.4	13.3	1.32	.270	3.30	78	3.02	82	6.84	16.9
18	Matt Kilroy M. Kilroy	7.92	583.0	1886	BAL	68	29	34	.460	68	3.37	513	66	5	0	476	218	350	10	182	19	0		2,469	61	2.81	2.82	0.15	20.8	7.4	1.13	.267	5.40	100	2.60	77	7.35	47
19	Charlie Geggus C. Geggus	7.92	177.1	1884	WSU	23	10	9	.526	21	2.54	156	19	0	0	143	50	100	2	38		2		733	23	1.93	4.11	0.10	21.3	5.2	1.02		5.08	85	2.30	89	7.26	4.8
20	Jack Meyer J. Meyer	7.91	110.1	1955	PHI	50	6	11	.353	5	3.43	97	0	0	16	75	42	50	14	66	3	36	6	470	6	5.38	1.47	1.14	20.6	14.0	1.28	.210	4.08	87	4.13	103	6.12	-1.6
21	Rube Waddell R. Waddell	7.86	328.2	1905	PHA	46	27	10	.730	34	1.48	287	27	7	0	231	54	86	5	90	10	11		1,257	10	2.46	3.19	0.14	22.8	7.2	0.98	.261	2.35	55	1.89	69	6.33	31.2
22	John Clarkson J. Clarkson	7.78	118.0	1884	CWS	14	10	3	.769	13	2.14	102	12	0	0	94	28	64	10	25		1		478	7	1.91	4.08	0.76	21.3	5.2	1.01		4.88	68	3.28	91	7.17	5.7
23	Bob Feller B. Feller	7.78	277.2	1938	CLE	39	17	11	.607	36	4.08	240	20	2	1	225	126	136	13	208	7	3		1,248	5	6.74	1.15	0.42	19.2	16.7	1.56	.272	4.41	86	4.13	91	7.29	13
24	Bob Turley B. Turley	7.76	176.1	1957	NYY	32	13	6	.684	23	2.71	152	9	4	3	120	53	59	17	85	9	7	1	723	2	4.34	1.79	0.87	21.0	11.8	1.16	.224	3.01	74	3.59	97	6.12	1.8
25	Camilo Pascual C. Pascual	7.73	188.2	1956	WSH	39	6	18	.250	27	5.87	162	6	0	2	194	123	131	33	89	6	9	4	848	7	4.25	1.82	1.57	19.1	10.5	1.50	.289	6.25	141	4.44	110	9.25	-8.7