highest k/9 single season since 1975 minimum 20 starts

Since 1975, Gerrit Cole has the highest K/9 with 20+ starts in a season, with 13.82 per nine innings in 2019.

Interpreted as:

highest k/9 single season since 1975 minimum 20 starts by a player

	NAME	K/9	GS	SEASON	TM	G	W	L	W%	ERA	SO	CG	SHO	SV	IP	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	33	2019	HOU	33	20	5	.800	2.50	326	0	0	0	212.1	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	13.81	20	2022	ATL	31	11	5	.688	2.67	202	0	0	0	131.2	86	39	42	7	45	3	3	1	528	6	3.08	4.49	0.48	38.3	8.5	0.99	.292	2.87	65	1.82	46	5.88	31.3
3	Spencer Strider S. Strider	13.55	32	2023	ATL	32	19	5	.792	3.86	281	0	0	0	186.2	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
4	Chris Sale C. Sale	13.50	27	2018	BOS	27	12	4	.750	2.11	237	0	0	0	158.0	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
5	Randy Johnson R. Johnson	13.41	34	2001	ARI	35	21	6	.778	2.49	372	3	2	0	249.2	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
6	Chris Sale C. Sale	13.32	25	2019	BOS	25	6	11	.353	4.40	218	1	1	0	147.1	123	72	80	24	37	13	0	0	612	2	2.26	5.89	1.47	35.6	6.0	1.09	.309	4.89	91	3.38	75	7.51	18.8
7	Pedro Martinez P. Martinez	13.20	29	1999	BOS	31	23	4	.852	2.07	313	5	1	0	213.1	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
8	Chris Sale C. Sale	12.93	32	2017	BOS	32	17	8	.680	2.90	308	1	0	0	214.1	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
9	Garrett Crochet G. Crochet	12.88	32	2024	CWS	32	6	12	.333	3.58	209	0	0	0	146.0	123	58	61	18	33	5	0	0	595	3	2.03	6.33	1.11	35.1	5.5	1.07	.318	3.76	88	2.68	64	7.58	24.3
10	Max Scherzer M. Scherzer	12.69	27	2019	WSH	27	11	7	.611	2.92	243	0	0	0	172.1	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
11	Corbin Burnes C. Burnes	12.61	28	2021	MIL	28	11	5	.688	2.43	234	0	0	0	167.0	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
12	Kerry Wood K. Wood	12.58	26	1998	CHC	26	13	6	.684	3.40	233	1	1	0	166.2	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
13	Randy Johnson R. Johnson	12.56	35	2000	ARI	35	19	7	.731	2.64	347	8	3	0	248.2	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
14	Carlos Rodón C. Rodón	12.55	24	2021	CWS	24	13	5	.722	2.37	185	1	1	0	132.2	91	35	39	13	36	8	0	1	534	7	2.44	5.14	0.88	34.6	6.7	0.96	.267	2.65	54	2.64	59	6.17	25.8
15	Blake Snell B. Snell	12.55	20	2024	SFG	20	5	3	.625	3.12	145	1	1	0	104.0	65	36	38	6	44	1	0	0	418	8	3.81	3.30	0.52	34.7	10.5	1.05	.266	3.29	78	2.42	62	5.63	17.6
16	Jose Fernandez J. Fernandez	12.49	29	2016	MIA	29	16	8	.667	2.86	253	0	0	0	182.1	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
17	Gerrit Cole G. Cole	12.40	32	2018	HOU	32	15	5	.750	2.88	276	1	1	0	200.1	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
18	Blake Snell B. Snell	12.36	23	2019	TBR	23	6	8	.429	4.29	147	0	0	0	107.0	96	51	53	14	40	1	0	1	441	11	3.36	3.68	1.18	33.3	9.1	1.27	.343	4.46	98	3.31	75	8.07	13.1
19	Randy Johnson R. Johnson	12.35	30	1995	SEA	30	18	2	.900	2.48	294	6	3	0	214.1	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
20	Randy Johnson R. Johnson	12.30	29	1997	SEA	30	20	4	.833	2.28	291	5	2	0	213.0	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
21	Dylan Cease D. Cease	12.28	32	2021	CWS	32	13	7	.650	3.91	226	1	1	0	165.2	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
22	Max Scherzer M. Scherzer	12.24	33	2018	WSH	33	18	7	.720	2.53	300	2	1	0	220.2	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
23	Hunter Greene H. Greene	12.21	22	2023	CIN	22	4	7	.364	4.82	152	0	0	0	112.0	111	60	65	19	48	8	0	0	498	5	3.86	3.17	1.53	30.5	9.6	1.42	.339	5.22	104	4.24	91	8.92	4.9
24	Justin Verlander J. Verlander	12.20	34	2018	HOU	34	16	9	.640	2.52	290	1	1	0	214.0	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
25	Freddy Peralta F. Peralta	12.16	27	2021	MIL	28	10	5	.667	2.81	195	1	0	0	144.1	84	45	47	14	56	11	0	1	580	4	3.49	3.48	0.87	33.6	9.7	0.97	.230	2.93	67	3.11	73	5.24	18.6