most strikeouts per 9 innings in mlb relievers last year

Jayvien Sandridge had the best K/9 by a relief pitcher in 2025, with 27.00 per nine innings in his rookie season.

Interpreted as:

most strikeouts per 9 innings by a player in MLB relievers last year

	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	Jayvien Sandridge J. Sandridge	27.00	2025	NYY	1	0	0		0	27.00	2	0	0	0	0.2	1	2	2	1	2	1	0	0	6	0	27.00	1.00	13.50	33.3	33.3	4.50		27.00	13.50
2	José Quijada J. Quijada	20.25	2025	LAA	2	0	0		0	0.00	3	0	0	0	1.1	1	0	0	0	2	0	0	0	8	0	13.50	1.50	0.00	37.5	25.0	2.25	.333	0.00	6.75
3	Roki Sasaki R. Sasaki	18.00	2025	LAD	2	0	0		0	0.00	4	0	0	0	2.0	1	0	0	0	0	0	0	0	7	0	0.00		0.00	57.1	0.0	0.50	.333	0.00	4.50
4	Lucas Gilbreath L. Gilbreath	18.00	2025	COL	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	Nolan Hoffman N. Hoffman	18.00	2025	PHI	1	0	0		0	27.00	2	0	0	0	1.0	3	3	3	0	1	0	1	0	7	1	9.00	2.00	0.00	28.6	14.3	4.00	.750	27.00	27.00
6	Doug Nikhazy D. Nikhazy	18.00	2025	CLE	1	0	0		0	0.00	2	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	0.00		0.00	66.7	0.0	0.00	.000	0.00	0.00
7	Logan Allen L. Allen	18.00	2025	CLE	1	1	0	1.000	0	0.00	2	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0	0.00		0.00	66.7	0.0	0.00	.000	0.00	0.00
8	Grant Holmes G. Holmes	18.00	2025	ATL	1	0	0		0	0.00	2	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	0.00		0.00	66.7	0.0	0.00	.000	0.00	0.00
9	Adam Ottavino A. Ottavino	16.20	2025	NYY	3	0	0		0	0.00	3	0	0	0	1.2	0	0	0	0	4	0	0	0	9	0	21.60	0.75	0.00	33.3	44.4	2.40	.000	0.00	0.00
10	Chad Patrick C. Patrick	15.75	2025	MIL	4	0	0		0	4.50	7	0	0	0	4.0	3	2	2	1	2	0	0	0	17	0	4.50	3.50	2.25	41.2	11.8	1.25	.286	4.50	6.75
11	Mason Miller M. Miller	15.18	2025	TOT	60	1	2	.333	0	2.63	104	0	0	22	61.2	28	18	19	5	28	1	37	2	234	3	4.09	3.71	0.73	44.4	12.0	0.91	.240	2.77	4.09
12	Ty Adcock T. Adcock	15.00	2025	NYM	3	0	0		0	3.00	5	0	0	0	3.0	2	1	1	1	2	0	1	0	14	0	6.00	2.50	3.00	35.7	14.3	1.33	.167	3.00	6.00
13	Cade Povich C. Povich	14.54	2025	BAL	2	1	0	1.000	0	3.12	14	0	0	0	8.2	8	3	3	0	4	0	0	0	37	2	4.15	3.50	0.00	37.8	10.8	1.38	.421	3.12	8.31
14	Jacob Lopez J. Lopez	14.54	2025	ATH	4	0	1	.000	0	5.19	14	0	0	0	8.2	10	5	7	3	4	1	1	0	42	0	4.15	3.50	3.12	33.3	9.5	1.62	.350	7.27	10.38
15	Josh Walker J. Walker	14.40	2025	TOR	3	0	0		0	7.20	8	0	0	0	5.0	8	4	4	0	2	1	1	0	25	0	3.60	4.00	0.00	32.0	8.0	2.00	.571	7.20	14.40
16	Chris Sale C. Sale	14.29	2025	ATL	1	1	0	1.000	0	1.59	9	0	0	0	5.2	4	1	1	0	2	0	0	0	22	0	3.18	4.50	0.00	40.9	9.1	1.06	.364	1.59	6.35
17	Danny Young D. Young	14.04	2025	NYM	10	0	0		0	4.32	13	0	0	0	8.1	9	4	5	0	3	1	4	0	37	0	3.24	4.33	0.00	35.1	8.1	1.44	.450	5.40	9.72
18	Griffin Jax G. Jax	13.64	2025	TOT	71	1	7	.125	0	4.36	97	0	0	0	64.0	61	31	33	7	20	1	6	3	274	0	2.81	4.85	0.98	35.4	7.3	1.27	.362	4.64	8.58
19	José Berríos J. Berríos	13.50	2025	TOR	1	0	0		0	13.50	3	0	0	0	2.0	2	3	3	1	2	0	0	0	10	0	9.00	1.50	4.50	30.0	20.0	2.00	.250	13.50	9.00
20	Richard Fitts R. Fitts	13.50	2025	BOS	1	1	0	1.000	0	6.75	6	0	0	0	4.0	2	3	3	1	3	1	0	0	18	0	6.75	2.00	2.25	33.3	16.7	1.25	.143	6.75	4.50
21	John Rooney J. Rooney	13.50	2025	HOU	1	0	0		0	6.75	2	0	0	0	1.1	1	1	1	1	1	0	0	0	6	0	6.75	2.00	6.75	33.3	16.7	1.50	.000	6.75	6.75
22	Ryan Burr R. Burr	13.50	2025	TOR	2	1	0	1.000	0	0.00	3	0	0	0	2.0	1	0	0	0	1	0	0	0	8	0	4.50	3.00	0.00	37.5	12.5	1.00	.250	0.00	4.50
23	Geoff Hartlieb G. Hartlieb	13.50	2025	TOT	4	0	0		0	21.60	5	0	0	0	3.1	8	8	8	2	6	0	1	0	24	0	16.20	0.83	5.40	20.8	25.0	4.20	.545	21.60	21.60
24	Jonathan Pintaro J. Pintaro	13.50	2025	NYM	1	0	0		0	27.00	1	0	0	0	0.2	2	2	2	0	2	0	0	0	6	0	27.00	0.50	0.00	16.7	33.3	6.00	.667	27.00	27.00
25	Andrew Walters A. Walters	13.50	2025	CLE	2	0	0		0	13.50	2	0	0	0	1.1	2	2	2	1	0	0	0	0	6	0	0.00		6.75	33.3	0.0	1.50	.333	13.50	13.50

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

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Wed 9/2	NYY	@	LAA	9:38 PM
Fri 9/4	NYY	@	SDP	9:40 PM
Sat 9/5	NYY	@	SDP	7:15 PM
Sun 9/6	NYY	@	SDP	4:10 PM
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Wed 9/2	SDP	@	CIN	12:40 PM
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Jayvien Sandridge had the best K/9 by a relief pitcher in 2025, with 27.00 per nine innings in his rookie season.

Interpreted as:

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