50 pitchers are tied for the lowest ERA by a relief pitcher this season, with an ERA of 0.00. The first three are Austin Pope, Clayton Kershaw and Roki Sasaki.

	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	Austin Pope A. Pope	0.00	2025	AZ	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	Clayton Kershaw C. Kershaw	0.00	2025	LAD	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
3	Roki Sasaki R. Sasaki	0.00	2025	LAD	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
4	Hunter Barco H. Barco	0.00	2025	PIT	1	1	0	1.000	0	0	0	0	0	1.0	2	0	0	0	0	0	0	0	5	0	0.00	0.00		0.00	0.0	0.0	2.00	.400	0.00	18.00
5	Clay Holmes C. Holmes	0.00	2025	NYM	2	0	0		0	3	0	0	0	4.2	4	0	1	0	0	0	0	0	18	1	5.79	0.00		0.00	16.7	0.0	0.86	.267	1.93	7.71
6	Mitchell Parker M. Parker	0.00	2025	WSH	2	1	0	1.000	0	2	0	0	1	4.1	2	0	0	0	1	0	1	0	16	1	4.15	2.08	2.00	0.00	12.5	6.3	0.69	.154	0.00	4.15
7	Jose Espada J. Espada	0.00	2025	BAL	1	0	0		0	4	0	0	0	3.0	1	0	0	0	0	0	1	0	9	0	12.00	0.00		0.00	44.4	0.0	0.33	.200	0.00	3.00
8	Isiah Kiner-Falefa I. Kiner-Falefa	0.00	2025	TOR	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
9	Zach McKinstry Z. McKinstry	0.00	2025	DET	1	0	0		0	0	0	0	0	0.1	0	0	0	0	0	0	1	0	1	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0.00
10	Michael Lorenzen M. Lorenzen	0.00	2025	KCR	1	0	0		0	1	0	0	0	1.0	0	0	0	0	0	0	0	0	3	0	9.00	0.00		0.00	33.3	0.0	0.00	.000	0.00	0.00
11	Dom Hamel D. Hamel	0.00	2025	NYM	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
12	Michael Soroka M. Soroka	0.00	2025	CHC	4	0	0		0	5	0	0	0	5.2	3	0	4	0	4	1	1	0	26	0	7.94	6.35	1.25	0.00	19.2	15.4	1.24	.188	6.35	4.76
13	Logan Davidson L. Davidson	0.00	2025	LAA	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
14	Garrett Acton G. Acton	0.00	2025	TBR	1	0	0		0	0	0	0	0	1.0	0	0	0	0	2	0	1	0	5	1	0.00	18.00	0.00	0.00	0.0	40.0	2.00	.000	0.00	0.00
15	J.P. France	0.00	2025	HOU	1	0	0		0	0	0	0	0	1.0	0	0	0	0	1	0	1	0	4	0	0.00	9.00	0.00	0.00	0.0	25.0	1.00	.000	0.00	0.00
16	Javier Assad J. Assad	0.00	2025	CHC	1	1	0	1.000	0	1	0	0	0	2.1	2	0	0	0	2	0	0	0	10	0	3.86	7.71	0.50	0.00	10.0	20.0	1.71	.286	0.00	7.71
17	Austin Slater A. Slater	0.00	2025	NYY	1	0	0		0	0	0	0	0	0.2	1	0	0	0	0	0	1	0	3	0	0.00	0.00		0.00	0.0	0.0	1.50	.333	0.00	13.50
18	Luke Maile L. Maile	0.00	2025	KCR	1	0	0		0	0	0	0	0	1.0	0	0	0	0	1	0	1	0	4	0	0.00	9.00	0.00	0.00	0.0	25.0	1.00	.000	0.00	0.00
19	Nick Raquet N. Raquet	0.00	2025	STL	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
20	Christian Roa C. Roa	0.00	2025	MIA	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
21	Reiver Sanmartin R. Sanmartin	0.00	2025	CIN	1	0	0		0	2	0	0	0	1.2	2	0	1	0	1	0	0	1	8	1	10.80	5.40	2.00	0.00	25.0	12.5	1.80	.400	5.40	10.80
22	Ryan Fitzgerald R. Fitzgerald	0.00	2025	MIN	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
23	Niko Kavadas N. Kavadas	0.00	2025	LAA	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
24	Joey Estes J. Estes	0.00	2025	ATH	1	0	0		0	1	0	0	0	4.0	1	0	0	0	0	0	1	0	13	0	2.25	0.00		0.00	7.7	0.0	0.25	.083	0.00	2.25
25	Alex Lange A. Lange	0.00	2025	DET	1	0	0		0	1	0	0	0	1.0	2	0	0	0	1	0	1	0	6	0	9.00	9.00	1.00	0.00	16.7	16.7	3.00	.500	0.00	18.00