highest strikeouts per 9 innings with a minimum of 70 ip single season

Josh Hader has the highest K/9 with 70.0+ innings pitched in a season, with 16.41 per nine innings in 2019.

Interpreted as:

highest strikeouts per 9 innings by a player with a minimum of 70 ip single season

	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	Josh Hader J. Hader	16.41	75.2	2019	MIL	61	3	5	.375	0	2.62	138	0	0	37	41	22	24	15	20	4	46	2	289	0	2.38	6.90	1.78	47.8	6.9	0.81	.232	2.85	59	3.08	70	4.88	11.3
2	Carlos Marmol C. Marmol	15.99	77.2	2010	CHC	77	2	3	.400	0	2.55	138	0	0	38	40	22	23	1	52	8	70	4	332	2	6.03	2.65	0.12	41.6	15.7	1.18	.293	2.67	62	2.00	50	4.64	17.4
3	Josh Hader J. Hader	15.82	81.1	2018	MIL	55	6	1	.857	0	2.43	143	0	0	12	36	22	23	9	30	1	14	0	306	0	3.32	4.77	1.00	46.7	9.8	0.81	.220	2.55	60	2.22	55	3.98	16.6
4	Dellin Betances D. Betances	15.53	73.0	2016	NYY	73	3	6	.333	0	3.08	126	0	0	12	54	25	31	5	28	1	20	0	299	6	3.45	4.50	0.62	42.1	9.4	1.12	.353	3.82	73	1.77	40	6.66	20.7
5	Aroldis Chapman A. Chapman	15.32	71.2	2012	CIN	68	5	5	.500	0	1.51	122	0	0	38	35	12	13	4	23	4	52	0	276	4	2.89	5.30	0.50	44.2	8.3	0.81	.252	1.63	38	1.54	38	4.40	19.3
6	Edwin Díaz E. Díaz	15.22	73.1	2018	SEA	73	0	4	.000	0	1.96	124	0	0	57	41	16	17	5	17	6	65	0	280	3	2.09	7.29	0.61	44.3	6.1	0.79	.281	2.09	48	1.60	38	5.03	21.3
7	Eric Gagne E. Gagne	14.98	82.1	2003	LAD	77	2	3	.400	0	1.20	137	0	0	55	37	11	12	2	20	3	67	2	306	2	2.19	6.85	0.22	44.8	6.5	0.69	.243	1.31	30	0.85	20	4.04	31.8
8	Billy Wagner B. Wagner	14.95	74.2	1999	HOU	66	4	1	.800	0	1.57	124	0	0	39	35	13	14	5	23	1	55	1	286	2	2.77	5.39	0.60	43.4	8.0	0.78	.226	1.69	37	1.64	38	4.22	23.6
9	Brad Lidge B. Lidge	14.93	94.2	2004	HOU	80	6	5	.545	0	1.90	157	0	0	29	57	20	21	8	30	6	44	5	369	3	2.85	5.23	0.76	42.5	8.1	0.92	.292	2.00	44	1.96	44	5.42	25.9
10	Corey Knebel C. Knebel	14.92	76.0	2017	MIL	76	1	4	.200	0	1.78	126	0	0	39	48	15	15	6	40	2	48	5	309	2	4.74	3.15	0.71	40.8	12.9	1.16	.311	1.78	41	2.52	58	5.68	15.4
11	Andrew Miller A. Miller	14.89	74.1	2016	TOT	70	10	1	.909	0	1.45	123	0	0	12	42	12	13	8	9	2	23	0	275	1	1.09	13.67	0.97	44.7	3.3	0.69	.256	1.57	34	1.67	38	5.09	21.7
12	Craig Kimbrel C. Kimbrel	14.84	77.0	2011	ATL	79	4	3	.571	0	2.10	127	0	0	46	48	18	19	3	32	1	64	1	306	4	3.74	3.97	0.35	41.5	10.5	1.04	.315	2.22	56	1.51	40	5.61	19.6
13	Armando Benitez A. Benitez	14.77	78.0	1999	NYM	77	4	3	.571	0	1.85	128	0	0	22	40	16	17	4	41	0	42	4	312	2	4.73	3.12	0.46	41.0	13.1	1.04	.259	1.96	42	2.08	47	4.62	21.3
14	Liam Hendriks L. Hendriks	14.32	71.0	2021	CWS	69	8	3	.727	0	2.54	113	0	0	38	45	20	23	11	7	1	58	1	267	6	0.89	16.14	1.39	42.3	2.6	0.73	.252	2.92	58	2.33	52	5.70	16.2
15	Jacob deGrom J. deGrom	14.28	92.0	2021	NYM	15	7	2	.778	15	1.08	146	1	1	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
16	Shane Bieber S. Bieber	14.20	77.1	2020	CLE	12	8	1	.889	12	1.63	122	0	0	0	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
17	Byung-Hyun Kim B. Kim	14.14	70.2	2000	ARI	61	6	6	.500	1	4.46	111	0	0	14	52	35	39	9	46	9	30	5	320	3	5.86	2.41	1.15	34.7	14.4	1.39	.297	4.97	94	3.97	84	6.62	6.1
18	Rob Dibble R. Dibble	14.08	70.1	1992	CIN	63	3	5	.375	0	3.07	110	0	0	25	48	24	26	3	31	2	49	2	286	6	3.97	3.55	0.38	38.5	10.8	1.12	.321	3.33	86	1.61	44	6.14	15.4
19	Dellin Betances D. Betances	14.04	84.0	2015	NYY	74	6	4	.600	0	1.50	131	0	0	9	45	14	17	6	40	3	17	2	332	9	4.29	3.28	0.64	39.5	12.0	1.01	.257	1.82	37	2.47	59	4.82	15.6
20	Kyle Barraclough K. Barraclough	14.00	72.2	2016	MIA	75	6	3	.667	0	2.85	113	0	0	0	45	23	24	1	44	2	6	1	306	8	5.45	2.57	0.12	36.9	14.4	1.22	.301	2.97	72	2.11	53	5.57	15.7
21	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
22	Spencer Strider S. Strider	13.81	131.2	2022	ATL	31	11	5	.688	20	2.67	202	0	0	0	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
23	Matt Brash M. Brash	13.63	70.2	2023	SEA	78	9	4	.692	0	3.06	107	0	0	4	65	24	26	3	29	6	7	0	308	11	3.69	3.69	0.38	34.7	9.4	1.33	.380	3.31	76	2.26	55	8.28	15
24	Wade Davis W. Davis	13.63	72.0	2014	KCR	71	9	2	.818	0	1.00	109	0	0	3	38	8	8	0	23	3	11	0	279	1	2.88	4.74	0.00	39.1	8.2	0.85	.264	1.00	25	1.18	32	4.75	20.7
25	Andrew Heaney A. Heaney	13.62	72.2	2022	LAD	16	4	4	.500	14	3.10	110	0	0	0	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