highest k/9 by a relief pitcher in a career

13 pitchers are tied for the best career K/9 by a relief pitcher, with 27.00 per nine innings. The first three are Jayvien Sandridge, Romy Gonzalez and Danny Valencia.

	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	H/9
1	Jayvien Sandridge J. Sandridge	27.00	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	Romy Gonzalez R. Gonzalez	27.00	1	0	0		0	0.00	1	0	0	0	0.1	0	0	0	0	0	0	1	0	1	0	0.00		0.00	100.0	0.0	0.00		0.00	0.00
3	Danny Valencia D. Valencia	27.00	1	0	0		0	0.00	1	0	0	0	0.1	0	0	0	0	0	0	1	0	1	0	0.00		0.00	100.0	0.0	0.00		0.00	0.00
4	Jeremy Bleich J. Bleich	27.00	2	0	0		0	54.00	1	0	0	0	0.1	2	2	2	0	0	1	0	0	4	0	0.00		0.00	25.0	0.0	6.00	1.000	54.00	54.00
5	John McDonald J. McDonald	27.00	1	0	0		0	0.00	1	0	0	0	0.1	2	0	0	0	0	0	1	0	3	0	0.00		0.00	33.3	0.0	6.00	1.000	0.00	54.00
6	Tyson Brummett T. Brummett	27.00	1	0	0		0	0.00	2	0	0	0	0.2	2	0	0	0	0	0	1	0	4	0	0.00		0.00	50.0	0.0	3.00	1.000	0.00	27.00
7	Scott Sheldon S. Sheldon	27.00	1	0	0		0	0.00	1	0	0	0	0.1	0	0	0	0	0	0	0	0	1	0	0.00		0.00	100.0	0.0	0.00		0.00	0.00
8	Mark Whiten M. Whiten	27.00	1	0	0		0	9.00	3	0	0	0	1.0	1	1	1	0	2	1	1	0	7	0	18.00	1.50	0.00	42.9	28.6	3.00	1.000	9.00	9.00
9	Ricky Pickett R. Pickett	27.00	2	0	0		0	81.00	2	0	0	0	0.2	3	6	6	0	4	0	0	0	9	1	54.00	0.50	0.00	22.2	44.4	10.50	1.000	81.00	40.50
10	Kevin Seitzer K. Seitzer	27.00	1	0	0		0	0.00	1	0	0	0	0.1	0	0	0	0	0	0	1	0	1	0	0.00		0.00	100.0	0.0	0.00		0.00	0.00
11	Fritz Fisher F. Fisher	27.00	1	0	0		0	108.00	1	0	0	0	0.1	2	4	4	0	2	0	0	0	5	0	54.00	0.50	0.00	20.0	40.0	12.00	1.000	108.00	54.00
12	Joe Cleary J. Cleary	27.00	1	0	0		0	189.00	1	0	0	0	0.1	5	7	7	0	3	0	0		9	1	81.00	0.33	0.00	11.1	33.3	24.00	1.000	189.00	135.00
13	Jim Mosolf J. Mosolf	27.00	1	0	0		0	27.00	1	0	0	0	0.1	1	1	1	0	0	0	1		2	0	0.00		0.00	50.0	0.0	3.00	1.000	27.00	27.00
14	Chuck Nieson C. Nieson	22.50	2	0	0		0	4.50	5	0	0	0	2.0	1	1	1	1	1	0	1	0	8	0	4.50	5.00	4.50	62.5	12.5	1.00	.000	4.50	4.50
15	A.J. Burnett	21.00	5	0	1	.000	0	10.50	14	0	0	0	6.0	9	7	7	0	4	0	1	1	31	3	6.00	3.50	0.00	45.2	12.9	2.17	.692	10.50	13.50
16	Larry Biittner L. Biittner	20.25	1	0	0		0	40.50	3	0	0	0	1.1	5	6	6	3	1	0	1	0	10	0	6.75	3.00	20.25	30.0	10.0	4.50	.667	40.50	33.75
17	Ryan Nye R. Nye	19.29	3	0	0		0	27.00	5	0	0	0	2.1	10	7	7	2	0	0	2	0	17	0	0.00		7.71	29.4	0.0	4.29	.800	27.00	38.57
18	Roki Sasaki R. Sasaki	18.00	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
19	CC Sabathia	18.00	1	0	0		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
20	Aaron Altherr A. Altherr	18.00	1	0	0		0	9.00	2	0	0	0	1.0	2	1	1	0	0	0	1	0	5	0	0.00		0.00	40.0	0.0	2.00	.667	9.00	18.00
21	Adam McCreery A. McCreery	18.00	1	0	0		0	18.00	2	0	0	0	1.0	4	2	2	0	0	0	1	0	7	0	0.00		0.00	28.6	0.0	4.00	.800	18.00	36.00
22	Tony Saunders T. Saunders	18.00	1	0	0		0	0.00	2	0	0	0	1.0	0	0	0	0	1	0	0	0	4	0	9.00	2.00	0.00	50.0	25.0	1.00	.000	0.00	0.00
23	Mike Anderson M. Anderson	18.00	1	0	0		0	0.00	2	0	0	0	1.0	2	0	0	0	0	0	1	0	5	0	0.00		0.00	40.0	0.0	2.00	.667	0.00	18.00
24	Don Leshnock D. Leshnock	18.00	1	0	0		0	0.00	2	0	0	0	1.0	2	0	0	0	0	0	1	0	5	0	0.00		0.00	40.0	0.0	2.00	.667	0.00	18.00
25	Dick Wantz D. Wantz	18.00	1	0	0		0	18.00	2	0	0	0	1.0	3	2	2	0	0	0	0	0	6	0	0.00		0.00	33.3	0.0	3.00	.750	18.00	27.00

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

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

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TEAM	W	L	PCT	GB
Rays	88	59	.599
Yankees	85	62	.578	3.0
Red Sox	80	68	.541	8.5
Blue Jays	73	75	.493	15.5
Orioles	72	76	.486	16.5

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DATE	MATCHUP			TIME (ET)
Sat 9/12	NYM	@	NYY	1:35 PM
Sun 9/13	NYM	@	NYY	1:35 PM
Mon 9/14	NYY	@	MIN	7:40 PM
Tue 9/15	NYY	@	MIN	7:40 PM
Wed 9/16	NYY	@	MIN	1:40 PM

Last Game

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Final

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85 - 62

Fri 11 Sep 2026

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NL East	W	L	PCT	GB
Braves	87	61	.588
Phillies	82	66	.554	5.0
Marlins	72	76	.486	15.0
Mets	68	79	.463	18.5
Nationals	68	81	.456	19.5
NL Central	W	L	PCT	GB
Brewers - x	92	56	.622
Cubs	82	66	.554	10.0
Pirates	74	74	.500	18.0
Cardinals	73	75	.493	19.0
Reds	69	78	.469	22.5
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Dodgers	90	57	.612
Padres	79	68	.537	11.0
Diamondbacks	79	69	.534	11.5
Giants	62	86	.419	28.5
Rockies	55	92	.374	35.0

AL East	W	L	PCT	GB
Rays - x	88	59	.599
Yankees	85	62	.578	3.0
Red Sox	80	68	.541	8.5
Blue Jays	73	75	.493	15.5
Orioles	72	76	.486	16.5
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Royals	66	82	.446	9.5
AL West	W	L	PCT	GB
Astros	75	73	.507
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DATE	MATCHUP			SCORE
Fri 8/28	CIN	@	CHC	10-8
Fri 8/28	MIA	@	WSH	2-9
Fri 8/28	SDP	@	TBR	4-9
Fri 8/28	SEA	@	TOR	1-8
Fri 8/28	BOS	@	NYY	0-1

Schedule

DATE	MATCHUP			TIME (ET)
Sat 9/12	COL	@	DET	1:10 PM
Sat 9/12	NYM	@	NYY	1:35 PM
Sat 9/12	PIT	@	CHC	2:20 PM
Sat 9/12	BAL	@	TOR	3:07 PM
Sat 9/12	SDP	@	SFG	4:05 PM

13 pitchers are tied for the best career K/9 by a relief pitcher, with 27.00 per nine innings. The first three are Jayvien Sandridge, Romy Gonzalez and Danny Valencia.

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