most k / 9 by a pitcher in a season since 1920 with at least 5 gs

Since 1920, Chase Burns has the highest K/9 with 5+ starts in a season, with 14.94 per nine innings this season.

	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	Chase Burns C. Burns	14.94	8	2025	CIN	8	0	3	.000	5.24	57	0	0	0	34.1	33	20	23	4	13	0	0	0	151	0	3.41	4.38	1.05	37.7	8.6	1.34	.377	6.03	118	2.43	56	8.65	7
2	Drew Smyly D. Smyly	14.35	5	2020	SFG	7	0	1	.000	3.42	42	0	0	0	26.1	20	10	11	2	9	0	0	0	111	1	3.08	4.67	0.68	37.8	8.1	1.10	.310	3.76	78	2.00	47	6.84	6.8
3	Tyler Glasnow T. Glasnow	14.28	11	2020	TBR	11	5	1	.833	4.08	91	0	0	0	57.1	43	26	26	11	22	0	0	0	238	7	3.45	4.14	1.73	38.2	9.2	1.13	.281	4.08	97	3.65	86	6.75	3.9
4	Jacob deGrom J. deGrom	14.28	15	2021	NYM	15	7	2	.778	1.08	146	1	1	0	92.0	40	11	14	6	11	1	0	0	324	0	1.08	13.27	0.59	45.1	3.4	0.55	.213	1.37	27	1.23	29	3.91	30.6
5	Jacob deGrom J. deGrom	14.27	11	2022	NYM	11	5	4	.556	3.08	102	0	0	0	64.1	40	22	22	9	8	0	0	0	239	0	1.12	12.75	1.26	42.7	3.3	0.75	.258	3.08	80	2.13	54	5.60	13.1
6	Shane Bieber S. Bieber	14.20	12	2020	CLE	12	8	1	.889	1.63	122	0	0	0	77.1	46	14	15	7	21	1	0	0	297	5	2.44	5.81	0.81	41.1	7.1	0.87	.267	1.75	37	2.06	46	5.35	20.5
7	Cole Ragans C. Ragans	14.05	10	2025	KCR	10	2	3	.400	5.18	76	0	0	0	48.2	47	28	29	5	16	2	0	0	209	3	2.96	4.75	0.92	36.4	7.7	1.29	.382	5.36	122	2.42	58	8.69	9.4
8	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
9	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
10	Jacob deGrom J. deGrom	13.76	12	2020	NYM	12	4	2	.667	2.38	104	0	0	0	68.0	47	18	21	7	18	0	0	0	268	4	2.38	5.78	0.93	38.8	6.7	0.96	.288	2.78	57	2.26	52	6.22	15.9
11	Dustin May D. May	13.70	5	2021	LAD	5	1	1	.500	2.74	35	0	0	0	23.0	16	7	8	4	6	1	0	0	93	0	2.35	5.83	1.57	37.6	6.5	0.96	.255	3.13	67	3.29	77	6.26	2.5
12	Andrew Heaney A. Heaney	13.62	14	2022	LAD	16	4	4	.500	3.10	110	0	0	0	72.2	60	25	34	14	19	9	1	0	310	0	2.35	5.79	1.73	35.5	6.1	1.09	.291	4.21	79	3.74	93	7.43	2.3
13	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
14	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
15	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
16	Jacob deGrom J. deGrom	13.35	6	2023	TEX	6	2	0	1.000	2.67	45	0	0	0	30.1	19	9	11	2	4	0	0	0	115	1	1.19	11.25	0.59	39.1	3.5	0.76	.266	3.26	62	1.54	35	5.64	9.4
17	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
18	Corbin Burnes C. Burnes	13.27	9	2020	MIL	12	4	1	.800	2.11	88	0	0	0	59.2	37	14	15	2	24	3	2	0	240	5	3.62	3.67	0.30	36.7	10.0	1.02	.285	2.26	47	2.03	46	5.58	16
19	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
20	Dinelson Lamet D. Lamet	12.95	14	2019	SDP	14	3	5	.375	4.07	105	0	0	0	73.0	62	33	38	12	30	5	0	0	313	6	3.70	3.50	1.48	33.5	9.6	1.26	.311	4.68	97	3.90	89	7.64	3.9
21	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
22	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
23	Chad Green C. Green	12.78	15	2019	NYY	54	4	4	.500	4.17	98	0	0	2	69.0	66	32	35	10	19	6	10	0	295	2	2.48	5.16	1.30	33.2	6.4	1.23	.346	4.57	92	3.33	72	8.61	10
24	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
25	Jacob Misiorowski J. Misiorowski	12.69	7	2025	MIL	7	4	1	.800	2.70	47	0	0	0	33.1	18	10	11	4	14	0	0	0	129	1	3.78	3.36	1.08	36.4	10.9	0.96	.219	2.97	64	3.10	75	4.86	3.8