lowest era in a season by relief pitcher with a minimum of 50 ip

6 pitchers are tied for the best ERA by a relief pitcher with 50.0+ innings pitched in a season, with an ERA of 0.00. The first three are Walter Johnson, Jim Baskette and Joe Lake in 1912.

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	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	Walter Johnson W. Johnson	0.00	51.1	1912	WSH	13	6	2	.750	0	34	0	0	2	32		9	0	11	2	13		189	2	5.96	1.93	3.09	0.00	18.0	5.8	0.84	.225	1.58	5.61
2	Jim Baskette J. Baskette	0.00	52.1	1912	CLE	18	2	1	.667	0	23	0	0	1	44		17	1	18	1	18		214	2	3.96	3.10	1.28	0.17	10.7	8.4	1.18	.251	2.92	7.57
3	Joe Lake J. Lake	0.00	64.2	1912	TOT	17	5	4	.556	0	28	0	0	1	75		50	1	14	1	15		278	1	3.90	1.95	2.00	0.14	10.1	5.0	1.38	.316	6.96	10.44
4	Charley Hall C. Hall	0.00	76.0	1912	BSA	14	6	0	1.000	0	36	0	0	2	55		23	1	21	1	12		293	0	4.26	2.49	1.71	0.12	12.3	7.2	1.00	.231	2.72	6.51
5	Charley Hall C. Hall	0.00	68.1	1911	BSA	22	4	3	.571	0	37	0	0	4	61		43	1	30	4	19		281	0	4.87	3.95	1.23	0.13	13.2	10.7	1.33	.287	5.66	8.03
6	Ralph Works R. Works	0.00	52.2	1911	DET	15	4	0	1.000	0	32	0	0	0	57		39	1	24	1	10		236	2	5.47	4.10	1.33	0.17	13.6	10.2	1.54	.315	6.66	9.74
7	Earl Hamilton E. Hamilton	0.00	56.0	1911	SLA	15	1	1	.500	0	24	0	0	0	59		33	2	22	1	10		230	1	3.86	3.54	1.09	0.32	10.4	9.6	1.45	.315	5.30	9.48
8	Buster Brown B. Brown	0.16	56.2	1911	BSN	17	1	1	.500	0	20	0	0	1	72		47	3	21	1	14		248	2	3.18	3.34	0.95	0.48	8.1	8.5	1.64	.340	7.46	11.44
9	Ed Walsh E. Walsh	0.16	55.1	1912	CWS	21	4	2	.667	0	40	0	0	10	41		10	0	14	0	20		212	3	6.51	2.28	2.86	0.00	18.9	6.6	0.99	.259	1.63	6.67
10	Elmer Knetzer E. Knetzer	0.17	54.0	1911	BKN	15	2	4	.333	0	20	0	0	0	48		26	0	23	0	11		208	1	3.33	3.83	0.87	0.00	9.6	11.1	1.31	.291	4.33	8.00
11	Orlie Weaver O. Weaver	0.17	53.0	1911	TOT	13	1	1	.500	0	28	0	0	1	46		23	0	25	4	10		216	1	4.75	4.25	1.12	0.00	13.0	11.6	1.34	.289	3.91	7.81
12	Jack Warhop J. Warhop	0.22	81.0	1912	NYH	17	4	3	.571	0	43	0	0	3	58		28	0	14	0	16		313	0	4.78	1.56	3.07	0.00	13.7	4.5	0.89	.227	3.11	6.44
13	Mordecai Brown M. Brown	0.31	57.2	1911	CHC	26	6	2	.750	0	29	0	0	12	57		20	2	10	2	25		228	1	4.53	1.56	2.90	0.31	12.7	4.4	1.16	.297	3.12	8.90
14	Elmer Steele E. Steele	0.36	75.2	1911	TOT	18	3	2	.600	0	18	0	0	2	62		22	0	16	4	13		278	0	2.14	1.90	1.13	0.00	6.5	5.8	1.03	.258	2.62	7.37
15	Doc Crandall D. Crandall	0.43	84.1	1911	NYG	26	7	0	1.000	0	47	0	0	5	74		29	2	20	1	26		351	1	5.02	2.13	2.35	0.21	13.4	5.7	1.11	.256	3.09	7.90
16	Rube Geyer R. Geyer	0.45	60.2	1911	SLN	18	3	2	.600	0	16	0	0	0	56		38	1	29	1	12		252	2	2.37	4.30	0.55	0.15	6.3	11.5	1.40	.268	5.64	8.31
17	Big Jeff Pfeffer B. Jeff Pfeffer	0.49	55.1	1911	BSN	20	4	2	.667	0	16	0	0	2	61		42	3	34	0	16		246	0	2.60	5.53	0.47	0.49	6.5	13.8	1.72	.301	6.83	9.92
18	Zack Britton Z. Britton	0.54	67.0	2016	BAL	69	2	1	.667	0	74	0	0	47	38	4	7	1	18	0	63	3	254	10	9.94	2.42	4.11	0.13	29.1	7.1	0.84	.230	0.94	5.10
19	Fernando Rodney F. Rodney	0.60	74.2	2012	TBR	76	2	2	.500	0	76	0	0	48	43	5	9	2	15	3	65	1	282	4	9.16	1.81	5.07	0.24	27.0	5.3	0.78	.220	1.08	5.18
20	Emmanuel Clase E. Clase	0.61	74.1	2024	CLE	74	4	2	.667	0	66	0	0	47	39	5	10	2	10	2	66	1	270	2	7.99	1.21	6.60	0.24	24.4	3.7	0.66	.195	1.21	4.72
21	Dennis Eckersley D. Eckersley	0.61	73.1	1990	OAK	63	4	2	.667	0	73	0	0	48	41	5	9	2	4	0	61	1	262	0	8.96	0.49	18.25	0.25	27.9	1.5	0.61	.213	1.10	5.03
22	Al Benton A. Benton	0.62	58.0	1949	CLE	29	4	0	1.000	0	14	0	0	10	37	4	5	1	21	0	18		222	0	2.17	3.26	0.67	0.16	6.3	9.5	1.00	.194	0.78	5.74
23	Wheezer Dell W. Dell	0.71	51.0	1915	BKN	16	2	0	1.000	0	20	0	0	1	28	4	7	0	16	1	11		186	1	3.53	2.82	1.25	0.00	10.8	8.6	0.86	.188	1.24	4.94
24	Rob Murphy R. Murphy	0.72	50.1	1986	CIN	34	6	0	1.000	0	36	0	0	1	26	4	4	0	21	0	12	2	195	5	6.44	3.75	1.71	0.00	18.5	10.8	0.93	.188	0.72	4.65
25	Roy Mitchell R. Mitchell	0.72	50.0	1911	SLA	16	1	1	.500	0	20	0	0	0	57		42	2	20	1	12		209	1	3.60	3.60	1.00	0.36	9.6	9.6	1.54	.331	7.56	10.26