most strikeouts per innings pitched by a pitcher in a career, minimum of 100 innings pitched

Aroldis Chapman has the most career strikeouts per inning pitched when pitching at least 100 innings, with 1.63.

	NAME	SO/IP	IP	SO	G	W	L	W%	GS	ERA	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Aroldis Chapman A. Chapman	1.63	805.2	1,311	846	58	46	.558	0	2.55	0	0	356	468	228	253	54	406	33	548	7	3,284	84	14.65	4.54	3.23	0.60	39.9	12.4	1.08	.280	2.83	62	2.38	57	5.23	156.3
2	Edwin Díaz E. Díaz	1.62	499.0	809	504	27	35	.435	0	2.87	0	0	248	344	159	172	53	178	39	382	9	2,029	32	14.59	3.21	4.54	0.96	39.9	8.8	1.05	.306	3.10	71	2.59	62	6.20	87.6
3	Josh Hader J. Hader	1.62	512.1	829	468	34	31	.523	0	2.64	0	0	226	282	150	164	65	198	24	321	6	2,019	19	14.56	3.48	4.19	1.14	41.1	9.8	0.94	.240	2.88	64	2.88	69	4.95	75.8
4	Dellin Betances D. Betances	1.61	394.1	633	374	21	23	.477	1	2.53	0	0	36	240	111	124	26	183	28	86	5	1,613	28	14.45	4.18	3.46	0.59	39.2	11.3	1.07	.288	2.83	61	2.39	56	5.48	78.8
5	Fernando Cruz F. Cruz	1.56	180.1	282	173	6	14	.300	7	4.24	0	0	2	134	85	91	19	86	6	26	2	762	17	14.07	4.29	3.28	0.95	37.0	11.3	1.22	.312	4.54	96	2.95	67	6.69	28.2
6	Craig Kimbrel C. Kimbrel	1.56	810.2	1,266	838	56	47	.544	0	2.59	0	0	440	483	233	259	73	340	40	651	11	3,260	70	14.06	3.77	3.72	0.81	38.8	10.4	1.02	.266	2.88	63	2.58	63	5.36	131.9
7	Devin Williams D. Williams	1.54	281.2	435	291	30	15	.667	0	2.43	0	0	85	164	76	94	20	131	15	125	4	1,147	17	13.90	4.19	3.32	0.64	37.9	11.4	1.05	.264	3.00	58	2.55	60	5.24	53.2
8	Félix Bautista F. Bautista	1.54	161.1	248	156	13	7	.650	0	2.01	0	0	67	84	36	42	14	72	3	104	1	632	10	13.83	4.02	3.44	0.78	39.2	11.4	0.97	.237	2.34	51	2.61	65	4.69	25.9
9	James Karinchak J. Karinchak	1.53	165.2	253	174	12	11	.522	0	3.10	0	0	15	98	57	64	18	98	6	48	2	697	15	13.74	5.32	2.58	0.98	36.3	14.1	1.18	.248	3.48	74	3.42	82	5.32	14
10	Mason Miller M. Miller	1.5	142.0	213	108	3	7	.300	6	3.17	0	0	49	85	50	57	13	57	5	77	5	559	8	13.50	3.61	3.74	0.82	38.1	10.2	1.00	.266	3.61	79	2.66	65	5.39	22.5
11	Josh James J. James	1.48	106.2	158	73	8	1	.889	6	4.64	0	0	1	80	55	57	18	61	8	24	0	461	10	13.33	5.15	2.59	1.52	34.3	13.2	1.32	.287	4.81	105	4.36	99	6.75	0.5
12	Jeremiah Estrada J. Estrada	1.47	132.0	194	136	10	7	.588	0	3.07	0	0	4	97	45	50	14	55	3	28	4	552	8	13.23	3.75	3.53	0.95	35.1	10.0	1.15	.290	3.41	76	2.90	71	6.61	17
13	Austin Adams A. Adams	1.43	155.2	223	188	7	7	.500	2	4.10	0	0	0	110	71	80	11	98	44	32	4	705	18	12.89	5.67	2.28	0.64	31.6	13.9	1.34	.301	4.63	100	3.97	95	6.36	4.1
14	Spencer Strider S. Strider	1.43	416.0	595	83	36	20	.643	70	3.72	0	0	0	326	172	181	47	144	18	3	2	1,714	13	12.87	3.12	4.13	1.02	34.7	8.4	1.13	.307	3.92	87	2.95	72	7.05	54.5
15	Kirby Yates K. Yates	1.39	442.2	615	461	30	24	.556	0	3.25	0	0	98	323	160	174	60	176	29	206	13	1,839	18	12.50	3.58	3.49	1.22	33.4	9.6	1.13	.274	3.54	79	3.54	85	6.57	31.2
16	Kenley Jansen K. Jansen	1.38	914.1	1,266	921	53	38	.582	0	2.58	0	0	469	606	262	281	87	276	31	689	20	3,631	21	12.46	2.72	4.59	0.86	34.9	7.6	0.96	.263	2.77	65	2.60	64	5.97	146.7
17	Andrew Nardi A. Nardi	1.37	121.2	167	135	12	4	.750	0	4.51	0	0	3	114	61	64	19	53	5	19	3	530	2	12.35	3.92	3.15	1.41	31.5	10.0	1.37	.332	4.73	107	3.91	94	8.43	3.6
18	Cade Smith C. Smith	1.37	129.1	177	129	11	5	.688	0	2.23	0	0	7	92	32	39	3	35	6	14	3	515	2	12.32	2.44	5.06	0.21	34.4	6.8	0.98	.303	2.71	56	1.65	40	6.40	35.2
19	Ken Giles K. Giles	1.36	355.1	484	362	14	18	.438	0	2.71	0	0	115	283	107	121	28	114	5	208	5	1,454	24	12.26	2.89	4.25	0.71	33.3	7.8	1.12	.310	3.06	66	2.45	58	7.17	68
20	Andrés Muñoz A. Muñoz	1.36	244.0	331	247	12	21	.364	0	2.40	0	0	68	154	65	77	17	99	14	110	12	981	18	12.21	3.65	3.34	0.63	33.7	10.1	1.04	.263	2.84	62	2.74	68	5.68	34.8
21	José Quijada J. Quijada	1.35	129.1	175	142	4	14	.222	0	4.59	0	0	8	99	66	73	19	86	12	32	8	576	4	12.18	5.98	2.03	1.32	30.4	14.9	1.43	.282	5.08	110	4.64	110	6.89	-6.3
22	Rob Dibble R. Dibble	1.35	477.0	645	385	27	25	.519	0	2.98	0	0	89	332	158	169	27	238	12	204	25	1,979	36	12.17	4.49	2.71	0.51	32.6	12.0	1.19	.289	3.19	77	2.43	61	6.26	74.2
23	Bryan Abreu B. Abreu	1.35	313.2	424	301	16	11	.593	0	2.55	0	0	10	221	89	99	24	142	21	51	0	1,297	19	12.17	4.07	2.99	0.69	32.7	10.9	1.16	.287	2.84	63	3.01	73	6.34	38.6
24	Alex Vesia A. Vesia	1.35	263.2	355	288	15	13	.536	1	2.87	0	0	12	179	84	103	33	120	10	41	13	1,090	9	12.12	4.10	2.96	1.13	32.6	11.0	1.13	.255	3.52	69	3.57	84	6.11	18.5
25	Trevor Rosenthal T. Rosenthal	1.35	364.0	490	373	12	25	.324	0	3.36	0	0	132	304	136	145	19	177	22	207	8	1,570	23	12.12	4.38	2.77	0.47	31.2	11.3	1.32	.331	3.59	85	2.74	70	7.52	48.2