highest so/9 in a season since 1904 with a minimum of 150 innings pitched

Since 1904, Gerrit Cole has the highest K/9 with 150.0+ innings pitched in a season, with 13.82 per nine innings in 2019.

Interpreted as:

highest so/9 by a player in a season since 1904 with a minimum of 150 innings pitched

	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	Gerrit Cole G. Cole	13.82	212.1	2019	HOU	33	20	5	.800	33	2.50	326	0	0	0	142	59	66	29	48	3	0	0	817	4	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	55	2.63	58	6.02	45
2	Spencer Strider S. Strider	13.55	186.2	2023	ATL	32	19	5	.792	32	3.86	281	0	0	0	146	80	85	22	58	9	0	1	763	6	2.80	4.84	1.06	36.8	7.6	1.09	.316	4.10	87	2.85	66	7.04	30.3
3	Chris Sale C. Sale	13.50	158.0	2018	BOS	27	12	4	.750	27	2.11	237	0	0	0	102	37	39	11	34	14	0	0	617	4	1.94	6.97	0.63	38.4	5.5	0.86	.283	2.22	48	1.97	47	5.81	39.2
4	Randy Johnson R. Johnson	13.41	249.2	2001	ARI	35	21	6	.778	34	2.49	372	3	2	0	181	69	74	19	71	18	1	2	994	8	2.56	5.24	0.68	37.4	7.1	1.01	.315	2.67	55	2.12	48	6.52	63.9
5	Pedro Martinez P. Martinez	13.20	213.1	1999	BOS	31	23	4	.852	29	2.07	313	5	1	0	160	49	56	9	37	9	1	1	835	6	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
6	Chris Sale C. Sale	12.93	214.1	2017	BOS	32	17	8	.680	32	2.90	308	1	0	0	165	69	73	24	43	8	0	0	851	3	1.81	7.16	1.01	36.2	5.1	0.97	.301	3.07	63	2.45	56	6.93	45.5
7	Max Scherzer M. Scherzer	12.69	172.1	2019	WSH	27	11	7	.611	27	2.92	243	0	0	0	144	56	59	18	33	7	0	2	693	0	1.72	7.36	0.94	35.1	4.8	1.03	.321	3.08	66	2.44	55	7.52	38.6
8	Corbin Burnes C. Burnes	12.61	167.0	2021	MIL	28	11	5	.688	28	2.43	234	0	0	0	123	45	47	7	34	6	0	0	657	5	1.83	6.88	0.38	35.6	5.2	0.94	.309	2.53	58	1.62	38	6.63	48.9
9	Kerry Wood K. Wood	12.58	166.2	1998	CHC	26	13	6	.684	26	3.40	233	1	1	0	117	63	69	14	85	11	0	1	699	6	4.59	2.74	0.76	33.3	12.2	1.21	.289	3.73	80	3.16	73	6.32	21.9
10	Randy Johnson R. Johnson	12.56	248.2	2000	ARI	35	19	7	.731	35	2.64	347	8	3	0	202	73	89	23	76	6	0	1	1,001	5	2.75	4.57	0.83	34.7	7.6	1.12	.326	3.22	56	2.53	53	7.31	61.1
11	Jose Fernandez J. Fernandez	12.49	182.1	2016	MIA	29	16	8	.667	29	2.86	253	0	0	0	149	58	63	13	55	6	0	6	737	9	2.71	4.60	0.64	34.3	7.5	1.12	.332	3.11	72	2.29	57	7.35	35.4
12	Gerrit Cole G. Cole	12.40	200.1	2018	HOU	32	15	5	.750	32	2.88	276	1	1	0	143	64	68	19	64	7	0	0	799	9	2.88	4.31	0.85	34.5	8.0	1.03	.286	3.05	70	2.70	65	6.42	32.7
13	Randy Johnson R. Johnson	12.35	214.1	1995	SEA	30	18	2	.900	30	2.48	294	6	3	0	159	59	65	12	65	6	0	1	866	5	2.73	4.52	0.50	33.9	7.5	1.05	.301	2.73	53	2.08	44	6.68	62
14	Randy Johnson R. Johnson	12.30	213.0	1997	SEA	30	20	4	.833	29	2.28	291	5	2	0	147	54	60	20	77	10	0	2	850	4	3.25	3.78	0.85	34.2	9.1	1.05	.281	2.54	50	2.82	62	6.21	41.3
15	Dylan Cease D. Cease	12.28	165.2	2021	CWS	32	13	7	.650	32	3.91	226	1	1	0	139	72	77	20	68	9	0	0	708	13	3.69	3.32	1.09	31.9	9.6	1.25	.309	4.18	90	3.40	76	7.55	18.9
16	Max Scherzer M. Scherzer	12.24	220.2	2018	WSH	33	18	7	.720	33	2.53	300	2	1	0	150	62	66	23	51	12	0	4	866	4	2.08	5.88	0.94	34.6	5.9	0.91	.265	2.69	62	2.65	64	6.12	36.1
17	Justin Verlander J. Verlander	12.20	214.0	2018	HOU	34	16	9	.640	34	2.52	290	1	1	0	156	60	63	28	37	8	0	0	833	5	1.56	7.84	1.18	34.8	4.4	0.90	.272	2.65	62	2.78	67	6.56	33
18	Robbie Ray R. Ray	12.13	174.1	2019	ARI	33	12	8	.600	33	4.34	235	0	0	0	150	84	91	30	84	5	0	5	747	7	4.34	2.80	1.55	31.5	11.2	1.34	.305	4.70	98	4.28	99	7.74	1
19	Randy Johnson R. Johnson	12.12	244.1	1998	TOT	34	19	11	.633	34	3.28	329	10	6	0	203	89	102	23	86	14	0	1	1,014	7	3.17	3.83	0.85	32.4	8.5	1.18	.320	3.76	72	2.89	65	7.48	42.2
20	Robbie Ray R. Ray	12.11	162.0	2017	ARI	28	15	5	.750	28	2.89	218	1	1	0	116	52	57	23	71	5	0	3	665	8	3.94	3.07	1.28	32.8	10.7	1.15	.267	3.17	63	3.71	85	6.44	11.6
21	Justin Verlander J. Verlander	12.11	223.0	2019	HOU	34	21	6	.778	34	2.58	300	2	1	0	137	64	66	36	42	6	0	0	847	4	1.70	7.14	1.45	35.4	5.0	0.80	.218	2.66	57	3.26	72	5.53	31.5
22	Gerrit Cole G. Cole	12.06	181.1	2021	NYY	30	16	8	.667	30	3.23	243	2	1	0	151	65	69	24	41	2	0	0	726	5	2.03	5.93	1.19	33.5	5.6	1.06	.305	3.42	76	2.91	67	7.49	28.1
23	Randy Johnson R. Johnson	12.06	271.2	1999	ARI	35	17	9	.654	35	2.48	364	12	2	0	207	75	86	30	70	9	0	3	1,079	4	2.32	5.20	0.99	33.7	6.5	1.02	.292	2.85	53	2.75	59	6.86	57.2
24	Max Scherzer M. Scherzer	12.02	200.2	2017	WSH	31	16	6	.727	31	2.51	268	2	0	0	126	56	62	22	55	11	0	2	780	4	2.47	4.87	0.99	34.4	7.1	0.90	.245	2.78	57	2.89	66	5.65	33.2
25	Carlos Rodón C. Rodón	11.98	178.0	2022	SFG	31	14	8	.636	31	2.88	237	1	0	0	131	57	59	12	52	3	0	0	710	10	2.63	4.56	0.61	33.4	7.3	1.03	.293	2.98	74	2.25	59	6.62	32.2