lowest era in a season by a middle relief relief pitcher before 2024

Before 2024, 50 pitchers were tied for the best ERA by a relief pitcher in a season, with an ERA of 0.00 in 2023. The first three are Janson Junk, Frankie Montas Jr. and Cristopher Sánchez.

	NAME	ERA	SEASON	TM	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	Janson Junk J. Junk	0.00	2023	MIL	1	0	0		0	3	0	0	0	2.2	1	0	0	0	0	0	1	0	9	0	10.13	0.00		0.00	33.3	0.0	0.38	.167	0.00	3.38
2	Frankie Montas Jr. F. Montas Jr.	0.00	2023	NYY	1	1	0	1.000	0	1	0	0	0	1.1	2	0	0	0	1	0	0	0	7	0	6.75	6.75	1.00	0.00	14.3	14.3	2.25	.400	0.00	13.50
3	Cristopher Sánchez C. Sánchez	0.00	2023	PHI	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
4	Jameson Taillon J. Taillon	0.00	2023	CHC	1	0	0		0	3	0	0	1	4.0	3	0	0	0	1	0	1	0	16	0	6.75	2.25	3.00	0.00	18.8	6.3	1.00	.250	0.00	6.75
5	Tanner Rainey T. Rainey	0.00	2023	WSH	1	0	0		0	1	0	0	0	1.0	1	0	0	0	1	0	1	0	5	1	9.00	9.00	1.00	0.00	20.0	20.0	2.00	.333	0.00	9.00
6	Jonathan Bowlan J. Bowlan	0.00	2023	KCR	1	0	0		0	1	0	0	0	1.0	2	0	0	0	0	0	1	0	5	0	9.00	0.00		0.00	20.0	0.0	2.00	.500	0.00	18.00
7	Yoendrys Gómez Y. Gómez	0.00	2023	NYY	1	0	0		0	4	0	0	0	2.0	1	0	0	0	0	1	1	0	8	0	18.00	0.00		0.00	50.0	0.0	0.50	.333	0.00	4.50
8	Ryne Nelson R. Nelson	0.00	2023	ARI	2	1	0	1.000	0	5	0	0	0	5.2	1	0	0	0	2	0	1	0	20	0	7.94	3.18	2.50	0.00	25.0	10.0	0.53	.077	0.00	1.59
9	Anthony Veneziano A. Veneziano	0.00	2023	KCR	2	0	0		0	1	0	0	0	2.1	2	0	2	0	2	0	1	0	12	0	3.86	7.71	0.50	0.00	8.3	16.7	1.71	.222	7.71	7.71
10	Jose Espada J. Espada	0.00	2023	SDP	1	0	0		0	2	0	0	0	1.0	0	0	0	0	2	0	1	0	5	0	18.00	18.00	1.00	0.00	40.0	40.0	2.00	.000	0.00	0.00
11	Rowdy Tellez R. Tellez	0.00	2023	MIL	1	0	0		0	1	0	0	0	1.0	1	0	0	0	0	0	1	0	4	0	9.00	0.00		0.00	25.0	0.0	1.00	.333	0.00	9.00
12	Jacob Latz J. Latz	0.00	2023	TEX	3	0	0		0	5	0	0	0	6.1	1	0	0	0	3	0	2	0	22	0	7.11	4.26	1.67	0.00	22.7	13.6	0.63	.071	0.00	1.42
13	Marcus Stroman M. Stroman	0.00	2023	CHC	2	0	0		0	4	0	0	0	3.0	2	0	1	0	1	0	1	0	12	0	12.00	3.00	4.00	0.00	33.3	8.3	1.00	.286	3.00	6.00
14	Seby Zavala S. Zavala	0.00	2023	ARI	1	0	0		0	0	0	0	0	0.2	0	0	0	0	0	0	1	0	2	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
15	Kyle Hurt K. Hurt	0.00	2023	LAD	1	0	0		0	3	0	0	0	2.0	0	0	0	0	0	0	1	0	6	0	13.50	0.00		0.00	50.0	0.0	0.00	.000	0.00	0.00
16	Thyago Vieira T. Vieira	0.00	2023	MIL	2	0	1	.000	0	2	0	0	0	3.0	0	0	1	0	1	0	2	0	10	0	6.00	3.00	2.00	0.00	20.0	10.0	0.33	.000	3.00	0.00
17	Luke Little L. Little	0.00	2023	CHC	7	0	0		0	12	0	0	0	6.2	5	0	0	0	4	1	3	0	30	1	16.20	5.40	3.00	0.00	40.0	13.3	1.35	.385	0.00	6.75
18	Andrew Saalfrank A. Saalfrank	0.00	2023	ARI	10	0	0		0	6	0	0	0	10.1	7	0	2	0	4	0	0	1	41	0	5.23	3.48	1.50	0.00	14.6	9.8	1.06	.226	1.74	6.10
19	Shane Greene S. Greene	0.00	2023	CHC	2	0	0		0	3	0	0	0	3.0	2	0	0	0	2	0	2	0	12	0	9.00	6.00	1.50	0.00	25.0	16.7	1.33	.286	0.00	6.00
20	Alex Faedo A. Faedo	0.00	2023	DET	3	0	0		0	7	0	0	0	6.0	1	0	0	0	2	0	2	0	20	0	10.50	3.00	3.50	0.00	35.0	10.0	0.50	.091	0.00	1.50
21	James McCann J. McCann	0.00	2023	BAL	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
22	Hunter Brown H. Brown	0.00	2023	HOU	2	1	0	1.000	0	1	0	0	0	3.0	1	0	0	0	2	0	1	0	11	0	3.00	6.00	0.50	0.00	9.1	18.2	1.00	.125	0.00	3.00
23	Ryder Ryan R. Ryan	0.00	2023	SEA	1	0	0		0	2	0	0	0	1.0	0	0	0	0	1	0	0	0	4	0	18.00	9.00	2.00	0.00	50.0	25.0	1.00	.000	0.00	0.00
24	Hagen Danner H. Danner	0.00	2023	TOR	1	0	0		0	0	0	0	0	0.1	0	0	0	0	0	0	0	0	1	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
25	J.P. France	0.00	2023	HOU	1	1	0	1.000	0	4	0	0	0	3.1	3	0	1	0	3	0	0	0	17	1	10.80	8.10	1.33	0.00	23.5	17.6	1.80	.300	2.70	8.10