most strikeouts per 9 by a pitcher since 2016 to 2021 120 or more games pitched

Between the 2016 and 2021 seasons, Josh Hader had the best K/9 when pitching in 120+ games, with 15.36 per nine innings.

	NAME	K/9	G	W	L	W%	GS	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	Josh Hader J. Hader	15.36	232	16	13	.552	0	2.26	482	0	0	96	282.1	135	71	74	34	106	14	121	3	1,085	5	3.38	4.55	1.08	44.4	9.8	0.85	.225	2.36	53	2.60	60	4.30	52.6
2	Dellin Betances D. Betances	15.02	222	10	19	.345	0	3.17	355	0	0	26	212.2	139	75	84	15	111	20	58	2	898	17	4.70	3.20	0.63	39.5	12.4	1.18	.312	3.55	74	2.58	59	5.88	41.8
3	Craig Kimbrel C. Kimbrel	14.88	291	16	17	.485	0	2.86	463	0	0	147	280.0	154	89	95	34	122	17	226	2	1,121	30	3.92	3.80	1.09	41.3	10.9	0.99	.247	3.05	65	2.92	68	4.95	42.8
4	Aroldis Chapman A. Chapman	14.42	300	21	11	.656	0	2.56	456	0	0	160	284.2	173	81	92	21	135	13	244	4	1,167	35	4.27	3.38	0.66	39.1	11.6	1.08	.280	2.91	59	2.48	56	5.47	60.2
5	Edwin Díaz E. Díaz	14.38	343	13	28	.317	0	3.23	539	0	0	173	337.1	249	121	130	40	123	27	258	8	1,396	21	3.28	4.38	1.07	38.6	8.8	1.10	.313	3.47	79	2.84	67	6.64	52.6
6	Kirby Yates K. Yates	13.42	234	11	15	.423	0	3.11	337	0	0	56	226.0	174	78	87	26	72	17	105	4	933	7	2.87	4.68	1.04	36.1	7.7	1.09	.308	3.46	75	2.86	67	6.93	35.5
7	Trevor Rosenthal T. Rosenthal	13.25	140	6	9	.400	0	4.68	187	0	0	36	127.0	108	66	72	8	83	10	69	0	575	11	5.88	2.25	0.57	32.5	14.4	1.50	.348	5.10	110	3.23	76	7.65	14.7
8	Corey Knebel C. Knebel	13.17	210	10	11	.476	4	3.10	297	0	0	60	203.0	149	70	75	22	95	7	89	9	840	3	4.21	3.13	0.98	35.4	11.3	1.20	.303	3.33	74	3.14	74	6.61	24.8
9	Andrew Miller A. Miller	12.75	293	22	15	.595	0	2.88	389	0	0	26	274.2	199	88	95	30	94	28	56	3	1,128	10	3.08	4.14	0.98	34.5	8.3	1.07	.288	3.11	68	3.08	72	6.52	36.6
10	Matt Barnes M. Barnes	12.57	348	29	22	.569	0	3.86	475	0	0	39	340.0	276	146	155	38	162	12	108	7	1,448	35	4.29	2.93	1.01	32.8	11.2	1.29	.313	4.10	85	3.36	78	7.31	36.6
11	José Leclerc J. Leclerc	12.52	190	6	10	.375	3	3.19	263	0	0	29	189.0	112	67	76	12	119	12	83	5	798	15	5.67	2.21	0.57	33.0	14.9	1.22	.255	3.62	66	3.29	72	5.33	26
12	Ken Giles K. Giles	12.51	244	5	14	.263	0	3.33	327	0	0	99	235.1	198	87	91	25	74	4	166	2	972	21	2.83	4.42	0.96	33.6	7.6	1.16	.319	3.48	79	2.76	64	7.57	41.3
13	Tommy Kahnle T. Kahnle	12.40	195	7	7	.500	0	3.48	242	0	0	2	175.2	143	68	77	18	73	4	41	5	736	18	3.74	3.32	0.92	32.9	9.9	1.23	.313	3.94	80	3.06	69	7.33	27.2
14	Trevor May T. May	12.20	225	19	9	.679	1	3.71	296	0	0	11	218.1	178	90	99	34	79	6	52	6	918	23	3.26	3.75	1.40	32.2	8.6	1.18	.286	4.08	87	3.65	84	7.34	17.1
15	Kenley Jansen K. Jansen	12.18	364	21	15	.583	0	2.47	494	0	0	208	365.0	239	100	113	37	96	15	306	7	1,441	9	2.37	5.15	0.91	34.3	6.7	0.92	.253	2.79	60	2.69	64	5.89	62.5
16	Carl Edwards Jr. C. Edwards Jr.	12.09	201	9	8	.529	0	3.77	244	0	0	3	181.2	105	76	79	18	101	5	26	4	748	19	5.00	2.42	0.89	32.6	13.5	1.13	.229	3.91	89	3.51	83	5.20	14
17	Tanner Scott T. Scott	12.00	170	9	8	.529	0	4.73	208	0	0	1	156.0	145	82	91	17	96	12	32	4	708	23	5.54	2.17	0.98	29.4	13.6	1.54	.341	5.25	107	4.00	87	8.37	9.7
18	Liam Hendriks L. Hendriks	11.99	316	19	15	.559	10	2.96	445	0	0	78	334.0	271	110	123	33	78	5	143	10	1,343	23	2.10	5.71	0.89	33.1	5.8	1.04	.304	3.31	70	2.53	59	7.30	67.2
19	Max Scherzer M. Scherzer	11.98	167	85	35	.708	167	2.75	1,423	7	1	0	1068.2	774	326	347	127	254	47	0	11	4,229	18	2.14	5.60	1.07	33.6	6.0	0.96	.272	2.92	64	2.89	67	6.52	164.6
20	Chris Sale C. Sale	11.95	125	57	34	.626	125	3.16	1,048	8	2	0	789.0	625	277	299	92	171	56	0	3	3,170	11	1.95	6.13	1.05	33.1	5.4	1.01	.296	3.41	70	2.88	67	7.13	126.4
21	Michael Feliz M. Feliz	11.95	222	17	9	.654	1	5.24	317	0	0	1	238.2	231	139	147	40	103	6	49	2	1,046	18	3.88	3.08	1.51	30.3	9.8	1.40	.329	5.54	126	4.05	95	8.71	5.8
22	Will Smith W. Smith	11.87	259	15	16	.484	0	3.12	320	0	0	85	242.2	174	84	92	34	86	6	144	9	979	11	3.19	3.72	1.26	32.7	8.8	1.07	.263	3.41	75	3.49	84	6.45	17.7
23	Robbie Ray R. Ray	11.79	161	56	42	.571	160	3.93	1,152	1	1	0	879.1	751	384	410	142	393	26	0	16	3,738	39	4.02	2.93	1.45	30.8	10.5	1.30	.301	4.20	89	4.07	96	7.69	15.4
24	David Robertson D. Robertson	11.75	211	22	9	.710	1	3.00	286	0	0	56	219.0	153	73	79	22	91	4	97	10	897	9	3.74	3.14	0.90	31.9	10.1	1.11	.265	3.25	71	3.15	73	6.29	28.5
25	Héctor Neris H. Neris	11.74	372	18	27	.400	0	3.39	478	0	0	84	366.1	297	138	152	51	141	20	188	13	1,539	20	3.46	3.39	1.25	31.1	9.2	1.20	.290	3.73	80	3.68	85	7.30	27