lowest era for a relief pitcher in 2021 with 10 games

Kervin Castro and Brad Wieck were tied for the lowest ERA by a relief pitcher with 10+ games pitched in 2021, with an ERA of 0.00.

Interpreted as:

lowest era for a relief pitcher in 2021 with 10 or more games

	NAME	ERA	G	SEASON	TM	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	Kervin Castro K. Castro	0.00	10	2021	SFG	1	1	.500	0	13	0	0	0	13.1	13	0	1	0	4	0	4	1	56	0	8.78	2.70	3.25	0.00	23.2	7.1	1.27	.333	0.68	8.78
2	Brad Wieck B. Wieck	0.00	15	2021	CHC	0	0		0	28	0	0	0	17.0	10	0	0	0	10	0	5	0	71	0	14.82	5.29	2.80	0.00	39.4	14.1	1.18	.303	0.00	5.29
3	Casey Sadler C. Sadler	0.67	42	2021	SEA	0	1	.000	0	37	0	0	0	40.1	19	3	4	1	10	1	2	0	145	2	8.26	2.23	3.70	0.22	25.5	6.9	0.72	.188	0.89	4.24
4	David Phelps D. Phelps	0.96	10	2021	TOR	0	0		0	13	0	0	0	9.1	8	1	2	0	3	1	1	0	38	0	12.54	2.89	4.33	0.00	34.2	7.9	1.18	.381	1.93	7.71
5	Aaron Loup A. Loup	1.01	63	2021	NYM	6	0	1.000	0	54	0	0	0	53.2	35	6	9	1	16	4	6	0	208	0	9.06	2.68	3.38	0.17	26.0	7.7	0.95	.256	1.51	5.87
6	Ranger Suárez R. Suárez	1.12	27	2021	PHI	5	3	.625	0	42	0	0	4	40.1	21	5	9	3	14	3	13	2	158	0	9.37	3.12	3.00	0.67	26.6	8.9	0.87	.188	2.01	4.69
7	Josh Hader J. Hader	1.23	60	2021	MIL	4	2	.667	0	102	0	0	34	58.2	25	8	8	3	24	2	42	0	224	3	15.65	3.68	4.25	0.46	45.5	10.7	0.84	.237	1.23	3.84
8	Art Warren A. Warren	1.29	26	2021	CIN	3	0	1.000	0	34	0	0	0	21.0	11	3	3	1	8	1	6	1	82	0	14.57	3.43	4.25	0.43	41.5	9.8	0.90	.263	1.29	4.71
9	Emmanuel Clase E. Clase	1.29	71	2021	CLE	4	5	.444	0	74	0	0	24	69.2	51	10	18	2	16	0	51	3	279	3	9.56	2.07	4.63	0.26	26.5	5.7	0.96	.262	2.33	6.59
10	Dominic Leone D. Leone	1.30	53	2021	SFG	4	4	.500	0	46	0	0	2	48.1	34	7	13	2	22	1	11	1	200	2	8.57	4.10	2.09	0.37	23.0	11.0	1.16	.248	2.42	6.33
11	Ryan Brasier R. Brasier	1.50	13	2021	BOS	1	1	.500	0	9	0	0	0	12.0	12	2	5	2	4	0	2	0	50	0	6.75	3.00	2.25	1.50	18.0	8.0	1.33	.286	3.75	9.00
12	Joe Barlow J. Barlow	1.55	31	2021	TEX	0	2	.000	0	27	0	0	11	29.0	12	5	9	2	12	0	18	0	111	1	8.38	3.72	2.25	0.62	24.3	10.8	0.83	.143	2.79	3.72
13	Caleb Baragar C. Baragar	1.57	25	2021	SFG	2	1	.667	0	16	0	0	2	23.0	19	4	7	1	12	3	5	2	98	0	6.26	4.70	1.33	0.39	16.3	12.2	1.35	.273	2.74	7.43
14	Andrew Kittredge A. Kittredge	1.65	53	2021	TBR	9	3	.750	0	70	0	0	8	65.1	50	12	18	4	13	3	15	5	256	5	9.64	1.79	5.38	0.55	27.3	5.1	0.96	.277	2.48	6.89
15	Drew Pomeranz D. Pomeranz	1.75	27	2021	SDP	1	0	1.000	0	30	0	0	0	25.2	19	5	6	2	10	0	2	1	102	1	10.52	3.51	3.00	0.70	29.4	9.8	1.13	.283	2.10	6.66
16	Kendall Graveman K. Graveman	1.77	53	2021	TOT	5	1	.833	0	61	0	0	10	56.0	35	11	15	3	20	8	17	1	222	3	9.80	3.21	3.05	0.48	27.5	9.0	0.98	.246	2.41	5.63
17	Austin Warren A. Warren	1.77	16	2021	LAA	3	0	1.000	0	20	0	0	1	20.1	16	4	5	0	5	1	1	0	84	0	8.85	2.21	4.00	0.00	23.8	6.0	1.03	.276	2.21	7.08
18	Andrew Chafin A. Chafin	1.83	71	2021	TOT	2	4	.333	0	64	0	0	5	68.2	45	14	14	4	19	2	11	1	266	3	8.39	2.49	3.37	0.52	24.1	7.1	0.93	.232	1.83	5.90
19	Cal Quantrill C. Quantrill	1.88	18	2021	CLE	0	1	.000	0	22	0	0	0	28.2	25	6	6	2	12	3	2	0	121	1	6.91	3.77	1.83	0.63	18.2	9.9	1.29	.280	1.88	7.85
20	Collin McHugh C. McHugh	1.90	30	2021	TBR	6	1	.857	0	62	0	0	1	52.0	42	11	15	3	11	2	11	2	206	2	10.73	1.90	5.64	0.52	30.1	5.3	1.02	.305	2.60	7.27
21	Louis Head L. Head	1.91	25	2021	TBR	2	0	1.000	0	28	0	0	0	33.0	18	7	8	1	9	3	12	0	125	1	7.64	2.45	3.11	0.27	22.4	7.2	0.82	.202	2.18	4.91
22	Garrett Whitlock G. Whitlock	1.96	46	2021	BOS	8	4	.667	0	81	0	0	2	73.1	64	16	22	6	17	3	11	2	298	3	9.94	2.09	4.76	0.74	27.2	5.7	1.10	.304	2.70	7.85
23	Jimmy Nelson J. Nelson	1.98	27	2021	LAD	1	2	.333	0	41	0	0	0	27.1	13	6	8	0	11	4	5	0	108	4	13.50	3.62	3.73	0.00	38.0	10.2	0.88	.250	2.63	4.28
24	Luke Jackson L. Jackson	1.98	71	2021	ATL	2	2	.500	0	70	0	0	0	63.2	45	14	15	6	29	2	5	2	261	3	9.90	4.10	2.41	0.85	26.8	11.1	1.16	.253	2.12	6.36
25	Blake Treinen B. Treinen	1.99	72	2021	LAD	6	5	.545	0	85	0	0	7	72.1	46	16	20	5	25	3	10	1	286	3	10.58	3.11	3.40	0.62	29.7	8.7	0.98	.244	2.49	5.72