5 pitchers were tied for the highest K/9 by a relief pitcher in 2022, with 18.00 per nine innings. The first three are Noah Davis, Shelby Miller and Javier Assad.

	NAME	K/9	SEASON	TM	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	H/9
1	Noah Davis N. Davis	18.00	2022	COL	1	0	0		0	18.00	2	0	0	0	1.0	3	2	2	1	1	0	0	0	7	0	9.00	2.00	9.00	28.6	14.3	4.00	.667	18.00	27.00
2	Shelby Miller S. Miller	18.00	2022	SFG	4	0	1	.000	0	6.43	14	0	0	0	7.0	6	5	5	0	3	0	0	1	30	0	3.86	4.67	0.00	46.7	10.0	1.29	.462	6.43	7.71
3	Javier Assad J. Assad	18.00	2022	CHC	1	0	0		0	9.00	2	0	0	0	1.0	2	1	1	0	0	0	0	0	5	0	0.00		0.00	40.0	0.0	2.00	.667	9.00	18.00
4	Kris Bubic K. Bubic	18.00	2022	KCR	1	0	0		0	9.00	2	0	0	0	1.0	1	1	1	1	0	0	1	0	4	0	0.00		9.00	50.0	0.0	1.00	.000	9.00	9.00
5	Locke St. John L. St. John	18.00	2022	CHC	1	0	0		0	13.50	4	0	0	0	2.0	3	3	3	2	0	0	1	0	9	0	0.00		9.00	44.4	0.0	1.50	.333	13.50	13.50
6	Spencer Howard S. Howard	17.18	2022	TEX	2	0	1	.000	0	7.36	7	0	0	0	3.2	4	3	3	2	2	0	0	0	17	0	4.91	3.50	4.91	41.2	11.8	1.64	.333	7.36	9.82
7	Justin Wilson J. Wilson	17.18	2022	CIN	5	0	1	.000	0	2.45	7	0	0	0	3.2	3	1	1	0	0	0	0	0	13	0	0.00		0.00	53.8	0.0	0.82	.500	2.45	7.36
8	Edwin Díaz E. Díaz	17.13	2022	NYM	61	3	1	.750	0	1.31	118	0	0	32	62.0	34	9	9	3	18	2	49	1	235	2	2.61	6.56	0.44	50.2	7.7	0.84	.330	1.31	4.94
9	Jake Walsh J. Walsh	16.88	2022	STL	3	0	1	.000	0	13.50	5	0	0	0	2.2	3	4	4	0	2	1	1	0	15	0	6.75	2.50	0.00	33.3	13.3	1.88	.429	13.50	10.13
10	Freddy Peralta F. Peralta	16.20	2022	MIL	1	0	1	.000	0	21.60	3	0	0	0	1.2	3	4	4	1	1	0	0	0	9	0	5.40	3.00	5.40	33.3	11.1	2.40	.500	21.60	16.20
11	Bryce Montes de Oca B. Montes de Oca	16.20	2022	NYM	3	0	0		0	10.80	6	0	0	0	3.1	7	4	4	0	2	0	1	0	19	1	5.40	3.00	0.00	31.6	10.5	2.70	.636	10.80	18.90
12	Yusei Kikuchi Y. Kikuchi	16.20	2022	TOR	12	2	0	1.000	0	4.91	33	0	0	1	18.1	17	10	10	4	9	2	4	0	83	0	4.42	3.67	1.96	39.8	10.8	1.42	.371	4.91	8.35
13	Cam Vieaux C. Vieaux	15.58	2022	PIT	8	0	0		0	10.38	15	0	0	0	8.2	15	10	11	2	5	1	2	0	48	0	5.19	3.00	2.08	31.3	10.4	2.31	.520	11.42	15.58
14	Jake Brentz J. Brentz	15.19	2022	KCR	8	0	3	.000	0	23.63	9	0	0	0	5.1	11	14	15	1	10	1	1	0	38	2	16.88	0.90	1.69	23.7	26.3	3.94	.588	25.31	18.56
15	Andrew Nardi A. Nardi	14.73	2022	MIA	13	1	1	.500	0	9.82	24	0	0	0	14.2	25	16	17	5	14	0	5	0	83	1	8.59	1.71	3.07	28.9	16.9	2.66	.500	10.43	15.34
16	Alexander Wells A. Wells	14.73	2022	BAL	2	0	0		0	4.91	6	0	0	0	3.2	5	2	2	2	0	0	2	0	16	0	0.00		4.91	37.5	0.0	1.36	.375	4.91	12.27
17	Andrew Heaney A. Heaney	14.62	2022	LAD	2	1	1	.500	0	3.38	13	0	0	0	8.0	8	3	3	1	1	0	1	0	33	0	1.13	13.00	1.13	39.4	3.0	1.13	.389	3.38	9.00
18	Josh Hader J. Hader	14.58	2022	TOT	56	2	5	.286	0	5.22	81	0	0	36	50.0	43	29	30	8	21	4	45	0	219	5	3.78	3.86	1.44	37.0	9.6	1.28	.333	5.40	7.74
19	Jimmy Yacabonis J. Yacabonis	14.54	2022	TOT	13	1	1	.500	0	9.00	21	0	0	0	13.0	19	13	14	4	9	2	5	0	68	1	6.23	2.33	2.77	30.9	13.2	2.15	.469	9.69	13.15
20	James Karinchak J. Karinchak	14.31	2022	CLE	38	2	0	1.000	0	2.08	62	0	0	3	39.0	22	9	9	2	21	1	9	0	160	4	4.85	2.95	0.46	38.8	13.1	1.10	.270	2.08	5.08
21	Fernando Cruz F. Cruz	14.29	2022	CIN	12	0	1	.000	0	1.59	18	0	0	0	11.1	9	2	3	1	9	0	1	0	53	1	7.15	2.00	0.79	34.0	17.0	1.59	.320	2.38	7.15
22	José Alvarado J. Alvarado	14.29	2022	PHI	59	4	2	.667	0	3.18	81	0	0	2	51.0	38	18	21	2	24	1	8	4	214	5	4.24	3.38	0.35	37.9	11.2	1.22	.340	3.71	6.71
23	Pete Fairbanks P. Fairbanks	14.25	2022	TBR	24	0	0		0	1.13	38	0	0	8	24.0	13	3	3	1	3	0	10	0	87	0	1.13	12.67	0.38	43.7	3.4	0.67	.267	1.13	4.88
24	Devin Williams D. Williams	14.24	2022	MIL	65	6	4	.600	0	1.93	96	0	0	15	60.2	31	13	17	2	30	3	21	1	240	5	4.45	3.20	0.30	40.0	12.5	1.01	.266	2.52	4.60
25	Jake Cousins J. Cousins	14.18	2022	MIL	12	2	1	.667	0	2.70	21	0	0	0	13.1	10	4	4	1	8	2	6	1	59	4	5.40	2.63	0.68	35.6	13.6	1.35	.333	2.70	6.75