what is the lowest era by a relief pitcher

50 pitchers are tied for the best career ERA by a relief pitcher, with an ERA of 0.00. The first three are Jake Bennett, Eury Pérez and Bailey Ober.

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Data note: Earned Run Average: player game data complete from 1901
Data note: Data: Retrosheet

	NAME	ERA	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Jake Bennett J. Bennett	0.00	1	0	0		0	1	0	0	0	3.2	3	0	0	0	1	0	0	0	14	0	2.45	2.45	1.00	0.00	7.1	7.1	1.09	.250	0.00	7.36
2	Eury Pérez E. Pérez	0.00	1	0	0		0	3	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0	27.00	0.00		0.00	100.0	0.0	0.00		0.00	0.00
3	Bailey Ober B. Ober	0.00	1	0	0		0	3	0	0	1	3.0	1	0	0	0	0	0	1	0	10	0	9.00	0.00		0.00	30.0	0.0	0.33	.143	0.00	3.00
4	José Rodriguez J. Rodriguez	0.00	4	0	0		0	5	0	0	0	4.2	3	0	0	0	0	0	0	0	16	0	9.64	0.00		0.00	31.3	0.0	0.64	.273	0.00	5.79
5	Brendan Cellucci B. Cellucci	0.00	6	0	0		0	11	0	0	0	8.2	2	0	0	0	3	0	1	1	30	0	11.42	3.12	3.67	0.00	36.7	10.0	0.58	.125	0.00	2.08
6	Matt Wilkinson M. Wilkinson	0.00	2	1	0	1.000	0	4	0	0	0	5.0	2	0	0	0	0	0	0	0	17	0	7.20	0.00		0.00	23.5	0.0	0.40	.154	0.00	3.60
7	Dylan Ross D. Ross	0.00	1	0	0		0	0	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
8	Troy Johnston T. Johnston	0.00	2	0	0		0	0	0	0	0	2.0	1	0	0	0	1	1	2	0	9	0	0.00	4.50	0.00	0.00	0.0	11.1	1.00	.143	0.00	4.50
9	Rafael Flores Jr. R. Flores Jr.	0.00	1	0	0		0	0	0	0	0	1.0	2	0	0	0	0	0	1	0	5	0	0.00	0.00		0.00	0.0	0.0	2.00	.400	0.00	18.00
10	Antoine Kelly A. Kelly	0.00	1	0	0		0	1	0	0	0	1.1	0	0	0	0	1	0	1	0	4	0	6.75	6.75	1.00	0.00	25.0	25.0	0.75	.000	0.00	0.00
11	Noah Cameron N. Cameron	0.00	1	0	0		0	8	0	0	0	7.0	2	0	0	0	3	0	1	0	24	1	10.29	3.86	2.67	0.00	33.3	12.5	0.71	.154	0.00	2.57
12	Bryan Torres B. Torres	0.00	1	0	0		0	0	0	0	0	2.0	1	0	0	0	1	0	1	0	8	0	0.00	4.50	0.00	0.00	0.0	12.5	1.00	.143	0.00	4.50
13	Gabriel Hughes G. Hughes	0.00	1	0	0		0	1	0	0	1	3.0	2	0	0	0	1	0	1	0	11	0	3.00	3.00	1.00	0.00	9.1	9.1	1.00	.222	0.00	6.00
14	Garrett Stallings G. Stallings	0.00	6	0	0		0	17	0	0	1	14.0	4	0	0	0	5	0	4	0	51	0	10.93	3.21	3.40	0.00	33.3	9.8	0.64	.138	0.00	2.57
15	Jake Meyers J. Meyers	0.00	1	0	0		0	0	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
16	Max Schuemann M. Schuemann	0.00	1	0	0		0	0	0	0	0	1.0	1	0	0	0	1	0	1	0	5	0	0.00	9.00	0.00	0.00	0.0	20.0	2.00	.250	0.00	9.00
17	Eiberson Castellano E. Castellano	0.00	1	0	0		0	2	0	0	1	3.0	4	0	0	0	0	1	1	0	12	0	6.00	0.00		0.00	16.7	0.0	1.33	.444	0.00	12.00
18	Tyler Callihan T. Callihan	0.00	4	0	0		0	1	0	0	0	3.0	3	0	0	0	3	0	4	0	15	0	3.00	9.00	0.33	0.00	6.7	20.0	2.00	.273	0.00	9.00
19	Coleman Crow C. Crow	0.00	1	0	0		0	0	0	0	0	2.0	1	0	0	0	1	0	1	1	9	0	0.00	4.50	0.00	0.00	0.0	11.1	1.00	.125	0.00	4.50
20	Cameron Weston C. Weston	0.00	1	0	0		0	1	0	0	0	1.0	0	0	0	0	1	0	1	0	3	0	9.00	9.00	1.00	0.00	33.3	33.3	1.00	.000	0.00	0.00
21	Sam Haggerty S. Haggerty	0.00	1	0	0		0	0	0	0	0	1.0	0	0	0	0	0	1	1	0	3	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
22	Welinton Herrera W. Herrera	0.00	3	0	0		0	2	0	0	0	2.1	2	0	0	0	1	0	1	0	10	0	7.71	3.86	2.00	0.00	20.0	10.0	1.29	.286	0.00	7.71
23	Tanner Andrews T. Andrews	0.00	2	0	0		0	1	0	0	0	3.0	1	0	0	0	2	0	2	0	11	0	3.00	6.00	0.50	0.00	9.1	18.2	1.00	.125	0.00	3.00
24	Eduardo Rivera E. Rivera	0.00	1	0	0		0	3	0	0	0	3.1	1	0	0	0	0	0	1	0	10	0	8.10	0.00		0.00	30.0	0.0	0.30	.143	0.00	2.70
25	P.J. Higgins	0.00	1	0	0		0	1	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	9.00	0.00		0.00	33.3	0.0	0.00	.000	0.00	0.00

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Rays	98	64	.605
Yankees	93	68	.578	4.5
Red Sox	87	75	.537	11.0
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Blue Jays	79	83	.488	19.0

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DATE	MATCHUP			TIME (ET)
Thu 3/25	BOS	@	SEA	4:00 AM
Fri 3/26	BOS	@	SEA	4:00 AM
Sat 3/27	BOS	@	SEA	4:00 AM
Sun 3/28	BOS	@	SEA	4:00 AM
Mon 3/29	BOS	@	HOU	4:00 AM

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NL East	W	L	PCT	GB
Braves - y	94	68	.580
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Marlins	80	82	.494	14.0
Nationals	77	85	.475	17.0
Mets	74	88	.457	20.0
NL Central	W	L	PCT	GB
Brewers - y	103	59	.636
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Wed 9/16	CWS	@	CLE	3-6
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DATE	MATCHUP			TIME (ET)
Thu 3/25	TEX	@	HOU	4:00 AM
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Thu 3/25	CWS	@	DET	4:00 AM
Thu 3/25	NYM	@	MIA	4:00 AM

50 pitchers are tied for the best career ERA by a relief pitcher, with an ERA of 0.00. The first three are Jake Bennett, Eury Pérez and Bailey Ober.

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