k/9 leaders among relievers since 2021 minimum 100 ip

Since 2021, Mason Miller has the best K/9 by a relief pitcher when pitching at least 100 innings, with 14.53 per nine innings.

	NAME	K/9	IP	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	H/9
1	Mason Miller M. Miller	14.53	135.2	119	3	4	.429	0	2.65	219	0	0	50	71	40	47	12	54	3	81	5	521	6	3.58	4.06	0.80	42.0	10.4	0.92	.253	3.12	4.71
2	Edwin Díaz E. Díaz	14.31	244.2	240	20	14	.588	0	2.43	389	0	0	112	150	66	73	17	82	22	188	2	966	17	3.02	4.74	0.63	40.3	8.5	0.95	.292	2.69	5.52
3	Josh Hader J. Hader	14.00	288.2	296	22	20	.524	0	2.71	449	0	0	164	172	87	98	34	116	12	242	3	1,158	17	3.62	3.87	1.06	38.8	10.0	1.00	.252	3.06	5.36
4	Aroldis Chapman A. Chapman	13.99	274.0	300	26	20	.565	0	3.05	426	0	0	91	169	93	105	25	156	7	144	4	1,145	32	5.12	2.73	0.82	37.2	13.6	1.19	.271	3.45	5.55
5	Devin Williams D. Williams	13.94	257.0	273	27	15	.643	0	2.59	398	0	0	86	148	74	87	17	122	12	124	4	1,044	13	4.27	3.26	0.60	38.1	11.7	1.05	.265	3.05	5.18
6	Félix Bautista F. Bautista	13.83	161.1	156	13	7	.650	0	2.01	248	0	0	67	84	36	42	14	72	3	104	1	632	10	4.02	3.44	0.78	39.2	11.4	0.97	.237	2.34	4.69
7	Fernando Cruz F. Cruz	13.52	183.0	183	7	14	.333	0	4.38	275	0	0	2	142	89	94	19	94	6	26	2	784	19	4.62	2.93	0.93	35.1	12.0	1.29	.315	4.62	6.98
8	Jeremiah Estrada J. Estrada	13.35	150.1	156	10	8	.556	0	3.47	223	0	0	4	118	58	63	21	65	3	29	4	637	9	3.89	3.43	1.26	35.0	10.2	1.22	.298	3.77	7.06
9	Liam Hendriks L. Hendriks	13.01	147.1	146	14	9	.609	0	3.12	213	0	0	76	105	51	59	21	31	4	118	2	581	14	1.89	6.87	1.28	36.7	5.3	0.92	.269	3.60	6.41
10	James Karinchak J. Karinchak	12.96	133.1	142	11	9	.550	0	3.24	192	0	0	14	81	48	54	17	81	6	40	1	566	8	5.47	2.37	1.15	33.9	14.3	1.21	.237	3.64	5.47
11	Craig Kimbrel C. Kimbrel	12.66	253.0	268	25	24	.510	0	3.52	356	0	0	92	176	99	117	29	117	17	179	5	1,054	22	4.16	3.04	1.03	33.8	11.1	1.16	.275	4.16	6.26
12	Matt Brash M. Brash	12.59	148.2	165	13	8	.619	0	2.72	208	0	0	8	128	45	49	7	63	9	18	3	634	14	3.81	3.30	0.42	32.8	9.9	1.28	.349	2.97	7.75
13	Cade Smith C. Smith	12.50	149.0	150	14	6	.700	0	2.42	207	0	0	17	106	40	47	5	36	7	32	3	589	3	2.17	5.75	0.30	35.1	6.1	0.95	.302	2.84	6.40
14	Andrew Nardi A. Nardi	12.35	121.2	135	12	4	.750	0	4.51	167	0	0	3	114	61	64	19	53	5	19	3	530	2	3.92	3.15	1.41	31.5	10.0	1.37	.332	4.73	8.43
15	Andrés Muñoz A. Muñoz	12.34	236.1	241	11	22	.333	0	2.28	324	0	0	77	150	60	74	15	93	16	121	12	949	18	3.54	3.48	0.57	34.1	9.8	1.03	.269	2.82	5.71
16	Bryan Abreu B. Abreu	12.24	317.2	306	16	12	.571	0	2.69	432	0	0	16	234	95	104	25	138	20	59	0	1,317	20	3.91	3.13	0.71	32.8	10.5	1.17	.298	2.95	6.63
17	Michael Kopech M. Kopech	12.12	136.2	124	9	11	.450	0	3.89	184	0	0	15	104	59	60	17	70	6	39	3	584	12	4.61	2.63	1.12	31.5	12.0	1.27	.283	3.95	6.85
18	Austin Adams A. Adams	12.11	113.2	147	5	5	.500	0	4.20	153	0	0	0	82	53	60	6	69	42	25	4	522	12	5.46	2.22	0.48	29.3	13.2	1.33	.302	4.75	6.49
19	Alex Vesia A. Vesia	12.11	269.0	294	17	12	.586	0	2.68	362	0	0	13	175	80	98	31	118	12	44	13	1,101	9	3.95	3.07	1.04	32.9	10.7	1.09	.249	3.28	5.86
20	Kirby Yates K. Yates	11.78	170.1	181	18	7	.720	0	3.06	223	0	0	41	102	58	62	23	87	8	84	6	702	9	4.60	2.56	1.22	31.8	12.4	1.11	.219	3.28	5.39
21	José Alvarado J. Alvarado	11.76	235.2	259	17	12	.586	0	3.48	308	0	0	37	186	91	108	20	124	10	61	11	1,009	24	4.74	2.48	0.76	30.5	12.3	1.32	.303	4.12	7.10
22	Joe Kelly J. Kelly	11.66	151.1	167	6	9	.400	0	4.28	196	0	0	4	122	72	81	12	70	14	19	2	656	12	4.16	2.80	0.71	29.9	10.7	1.27	.302	4.82	7.26
23	Jake Diekman J. Diekman	11.57	207.0	243	10	12	.455	0	4.30	266	0	0	12	159	99	122	29	138	17	59	5	919	20	6.00	1.93	1.26	28.9	15.0	1.43	.277	5.30	6.91
24	David Robertson D. Robertson	11.56	229.2	219	15	13	.536	0	3.02	295	0	0	42	174	77	87	24	98	11	82	8	954	17	3.84	3.01	0.94	30.9	10.3	1.18	.285	3.41	6.82
25	Paul Sewald P. Sewald	11.55	248.2	256	20	12	.625	0	3.29	319	0	0	82	173	91	98	38	81	8	141	11	1,001	4	2.93	3.94	1.38	31.9	8.1	1.02	.243	3.55	6.26

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StatMuse has game-level data for K/9 and innings pitched going back to the 1901 season.

Some of the information used here was obtained free of charge from Retrosheet.

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2025 Division Standings

TEAM	W	L	PCT	GB
Mariners	90	72	.556
Astros	87	75	.537	3.0
Rangers	81	81	.500	9.0
Athletics	76	86	.469	14.0
Angels	72	90	.444	18.0

Schedule

DATE	MATCHUP			TIME (ET)
Fri 3/27	ATH	@	TOR	7:07 PM
Sat 3/28	ATH	@	TOR	3:07 PM
Sun 3/29	ATH	@	TOR	1:37 PM
Mon 3/30	ATH	@	ATL	7:15 PM
Tue 3/31	ATH	@	ATL	7:15 PM

Last Game

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76 - 86

Sun 28 Sep 2025

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MLB Fantasy 2025

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MLB 2025 Standings

NL East	W	L	PCT	GB
Phillies - y	96	66	.593
Mets	83	79	.512	13.0
Marlins	79	83	.488	17.0
Braves	76	86	.469	20.0
Nationals	66	96	.407	30.0
NL Central	W	L	PCT	GB
Brewers - y	97	65	.599
Cubs - w	92	70	.568	5.0
Reds - w	83	79	.512	14.0
Cardinals	78	84	.481	19.0
Pirates	71	91	.438	26.0
NL West	W	L	PCT	GB
Dodgers - y	93	69	.574
Padres - w	90	72	.556	3.0
Giants	81	81	.500	12.0
Diamondbacks	80	82	.494	13.0
Rockies	43	119	.265	50.0

AL East	W	L	PCT	GB
Blue Jays - y	94	68	.580
Yankees - w	94	68	.580
Red Sox - w	89	73	.549	5.0
Rays	77	85	.475	17.0
Orioles	75	87	.463	19.0
AL Central	W	L	PCT	GB
Guardians - y	88	74	.543
Tigers - w	87	75	.537	1.0
Royals	82	80	.506	6.0
Twins	70	92	.432	18.0
White Sox	60	102	.370	28.0
AL West	W	L	PCT	GB
Mariners - y	90	72	.556
Astros	87	75	.537	3.0
Rangers	81	81	.500	9.0
Athletics	76	86	.469	14.0
Angels	72	90	.444	18.0

MLB 2025 Scores & Schedule

Scores

DATE	MATCHUP			SCORE
Tue 9/16	CIN	@	STL	6-2
Tue 9/16	ATL	@	WSH	9-4
Tue 9/16	ATH	@	BOS	4-5
Tue 9/16	TOR	@	TBR	1-2
Tue 9/16	SEA	@	KCR	5-7

Schedule

DATE	MATCHUP			TIME (ET)
Wed 3/25	NYY	@	SFG	8:05 PM
Thu 3/26	LAA	@	HOU	4:00 AM
Thu 3/26	WSH	@	CHC	4:00 AM
Thu 3/26	CWS	@	MIL	2:10 PM
Thu 3/26	MIN	@	BAL	3:05 PM

Since 2021, Mason Miller has the best K/9 by a relief pitcher when pitching at least 100 innings, with 14.53 per nine innings.

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