lowest era by a relief pitcher ever with 50 innings

50 pitchers are tied for the best career ERA by a relief pitcher, with an ERA of 0.00. The first three are Austin Pope, Roki Sasaki and Hunter Barco.

	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	Austin Pope A. Pope	0.00	1	0	0		0	1	0	0	0	2.0	2	0	0	0	1	0	0	0	9	0	4.50	4.50	1.00	0.00	11.1	11.1	1.50	.286	0.00	9.00
2	Roki Sasaki R. Sasaki	0.00	2	0	0		0	4	0	0	0	2.0	1	0	0	0	0	0	0	0	7	0	18.00	0.00		0.00	57.1	0.0	0.50	.333	0.00	4.50
3	Hunter Barco H. Barco	0.00	2	1	0	1.000	0	3	0	0	0	3.0	3	0	0	0	0	0	0	0	12	0	9.00	0.00		0.00	25.0	0.0	1.00	.333	0.00	9.00
4	Dom Hamel D. Hamel	0.00	1	0	0		0	0	0	0	0	1.0	3	0	0	0	0	1	0	0	6	0	0.00	0.00		0.00	0.0	0.0	3.00	.600	0.00	27.00
5	Logan Davidson L. Davidson	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
6	Nick Raquet N. Raquet	0.00	2	0	0		0	1	0	0	0	2.0	0	0	0	0	1	0	0	0	7	0	4.50	4.50	1.00	0.00	14.3	14.3	0.50	.000	0.00	0.00
7	Christian Roa C. Roa	0.00	2	0	0		0	3	0	0	0	3.0	1	0	0	0	3	0	1	0	12	0	9.00	9.00	1.00	0.00	25.0	25.0	1.33	.167	0.00	3.00
8	Ryan Fitzgerald R. Fitzgerald	0.00	2	0	0		0	0	0	0	0	2.0	2	0	0	0	0	0	2	0	8	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	9.00
9	Niko Kavadas N. Kavadas	0.00	1	0	0		0	1	0	0	0	1.2	3	0	0	0	1	0	1	0	9	0	5.40	5.40	1.00	0.00	11.1	11.1	2.40	.429	0.00	16.20
10	Anthony Seigler A. Seigler	0.00	1	0	0		0	0	0	0	0	1.0	1	0	0	0	0	0	1	0	4	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	9.00
11	Jared Triolo J. Triolo	0.00	1	0	0		0	0	0	0	0	1.0	3	0	2	1	1	0	1	0	8	0	0.00	9.00	0.00	9.00	0.0	12.5	4.00	.333	18.00	27.00
12	Doug Nikhazy D. Nikhazy	0.00	1	0	0		0	2	0	0	0	1.0	0	0	0	0	0	0	1	0	3	0	18.00	0.00		0.00	66.7	0.0	0.00	.000	0.00	0.00
13	Luis Vázquez L. Vázquez	0.00	4	0	0		0	0	0	0	0	4.1	3	0	0	0	1	0	4	0	14	0	0.00	2.08	0.00	0.00	0.0	7.1	0.92	.231	0.00	6.23
14	Chase Petty C. Petty	0.00	1	0	1	.000	0	0	0	0	0	0.2	1	0	1	0	0	1	1	0	4	0	0.00	0.00		0.00	0.0	0.0	1.50	.333	13.50	13.50
15	Jared Young J. Young	0.00	1	0	0		0	0	0	0	0	0.1	1	0	0	0	1	0	1	0	3	0	0.00	27.00	0.00	0.00	0.0	33.3	6.00	.500	0.00	27.00
16	Christian Montes De Oca C. Montes De Oca	0.00	1	0	0		0	2	0	0	0	2.2	0	0	0	0	1	0	0	0	9	0	6.75	3.38	2.00	0.00	22.2	11.1	0.38	.000	0.00	0.00
17	Logan Allen L. Allen	0.00	1	1	0	1.000	0	2	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0	18.00	0.00		0.00	66.7	0.0	0.00	.000	0.00	0.00
18	César Salazar C. Salazar	0.00	1	0	0		0	0	0	0	0	1.0	0	0	0	0	0	1	1	0	4	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
19	Willie MacIver W. MacIver	0.00	2	0	0		0	0	0	0	0	2.0	4	0	0	0	0	0	2	0	10	0	0.00	0.00		0.00	0.0	0.0	2.00	.400	0.00	18.00
20	Tomás Nido T. Nido	0.00	1	0	0		0	0	0	0	0	1.2	0	0	0	0	0	1	1	0	6	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
21	Jacob Amaya J. Amaya	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
22	Ryan Bergert R. Bergert	0.00	4	1	0	1.000	0	2	0	0	0	4.0	1	0	0	0	0	1	2	0	14	0	4.50	0.00		0.00	14.3	0.0	0.25	.091	0.00	2.25
23	Christian Koss C. Koss	0.00	4	0	0		0	0	0	0	0	4.0	4	0	0	0	0	0	4	0	16	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	9.00
24	Ezequiel Duran E. Duran	0.00	4	0	0		0	0	0	0	0	3.1	1	0	0	0	0	0	4	0	11	0	0.00	0.00		0.00	0.0	0.0	0.30	.091	0.00	2.70
25	Spencer Arrighetti S. Arrighetti	0.00	1	0	0		0	4	0	0	0	2.1	0	0	0	0	3	1	0	0	11	0	15.43	11.57	1.33	0.00	36.4	27.3	1.29	.000	0.00	0.00

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StatMuse has game-level data for ERA going back to the 1901 season.

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

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DATE	MATCHUP			TIME (ET)
Thu 3/26	AZ	@	LAD	4:10 PM
Fri 3/27	AZ	@	LAD	10:10 PM
Sat 3/28	AZ	@	LAD	9:10 PM
Mon 3/30	DET	@	AZ	10:10 PM
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NL East	W	L	PCT	GB
Phillies - y	96	66	.593
Mets	83	79	.512	13.0
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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
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Astros	87	75	.537	3.0
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