lowest era among rp in mlb history (min 1,000 ip)

Mariano Rivera has the lowest career ERA by a relief pitcher when pitching at least 1000 innings, with an ERA of 2.06.

	NAME	ERA	IP	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	Mariano Rivera M. Rivera	2.06	1233.2	1,105	79	57	.581	0	1,135	0	0	652	934	282	305	63	266	44	952	41	4,870	13	8.28	1.94	4.27	0.46	23.3	5.5	0.97	.259	2.23	6.81
2	Hoyt Wilhelm H. Wilhelm	2.49	1872.1	1,018	124	103	.546	0	1,363	0	0	228	1,436	518	636	125	661	51	651	58	7,619	83	6.55	3.18	2.06	0.60	17.9	8.7	1.12	.242	3.06	6.90
3	Rollie Fingers R. Fingers	2.73	1505.2	907	107	101	.514	0	1,183	0	0	341	1,276	456	502	97	429	29	709	105	6,104	37	7.07	2.56	2.76	0.58	19.4	7.0	1.13	.270	3.00	7.63
4	Dan Quisenberry D. Quisenberry	2.76	1043.1	674	56	46	.549	0	379	0	0	244	1,064	320	356	59	162	7	553	70	4,247	4	3.27	1.40	2.34	0.51	8.9	3.8	1.18	.276	3.07	9.18
5	Rich Gossage R. Gossage	2.77	1556.2	965	115	85	.575	0	1,340	0	0	310	1,235	479	537	98	628	38	681	87	6,408	56	7.75	3.63	2.13	0.57	20.9	9.8	1.20	.264	3.10	7.14
6	Ron Perranoski R. Perranoski	2.78	1170.2	736	79	74	.516	0	685	0	0	178	1,091	362	440	48	467	24	458	121	5,002	28	5.27	3.59	1.47	0.37	13.7	9.3	1.33	.276	3.38	8.39
7	Clay Carroll C. Carroll	2.82	1204.2	703	88	66	.571	0	613	0	0	143	1,141	377	438	57	397	35	373	105	5,047	38	4.58	2.97	1.54	0.43	12.1	7.9	1.28	.275	3.27	8.52
8	Bruce Sutter B. Sutter	2.83	1042.0	661	68	71	.489	0	861	0	0	300	879	328	370	77	309	13	512	83	4,251	37	7.44	2.67	2.79	0.67	20.3	7.3	1.14	.268	3.20	7.59
9	Kent Tekulve K. Tekulve	2.85	1436.2	1,050	94	90	.511	0	779	0	0	184	1,305	455	526	63	491	17	638	179	6,001	23	4.88	3.08	1.59	0.39	13.0	8.2	1.25	.267	3.30	8.18
10	Tug McGraw T. McGraw	2.86	1301.1	785	89	69	.563	0	974	0	0	180	1,104	414	467	74	494	20	541	123	5,391	51	6.74	3.42	1.97	0.51	18.1	9.2	1.23	.269	3.23	7.64
11	Gary Lavelle G. Lavelle	2.86	1077.2	742	80	75	.516	0	766	0	0	136	993	343	403	50	438	13	399	126	4,571	19	6.40	3.66	1.75	0.42	16.8	9.6	1.33	.285	3.37	8.29
12	Trevor Hoffman T. Hoffman	2.87	1089.1	1,035	61	75	.449	0	1,133	0	0	601	846	347	378	100	307	9	856	58	4,388	49	9.36	2.54	3.69	0.83	25.8	7.0	1.06	.263	3.12	6.99
13	Sparky Lyle S. Lyle	2.88	1390.1	899	99	76	.566	0	873	0	0	238	1,292	445	519	84	481	14	634	81	5,796	68	5.65	3.11	1.81	0.54	15.1	8.3	1.28	.278	3.36	8.36
14	John Franco J. Franco	2.89	1245.2	1,119	90	87	.508	0	975	0	0	424	1,166	400	466	81	495	22	774	78	5,312	54	7.04	3.58	1.97	0.59	18.4	9.3	1.33	.290	3.37	8.42
15	Don McMahon D. McMahon	2.94	1297.0	872	90	66	.577	0	992	0	0	152	1,040	424	474	102	576	34	505	82	5,446	74	6.88	4.00	1.72	0.71	18.2	10.6	1.25	.251	3.29	7.22
16	Stu Miller S. Miller	2.95	1094.0	611	79	67	.541	0	821	0	0	153	946	358	409	75	395	25	406	97	4,538	15	6.75	3.25	2.08	0.62	18.1	8.7	1.23	.270	3.36	7.78
17	Mike Marshall M. Marshall	2.96	1259.1	700	92	98	.484	0	813	0	0	188	1,143	414	469	68	461	28	549	48	5,276	63	5.81	3.29	1.76	0.49	15.4	8.7	1.27	.275	3.35	8.17
18	Lee Smith L. Smith	2.98	1252.1	1,016	71	87	.449	0	1,225	0	0	478	1,095	415	456	87	474	9	802	100	5,230	46	8.80	3.41	2.58	0.63	23.4	9.1	1.25	.293	3.28	7.87
19	Greg Minton G. Minton	3.00	1089.1	703	57	62	.479	0	461	0	0	150	1,034	363	422	42	463	15	415	129	4,626	50	3.81	3.83	1.00	0.35	10.0	10.0	1.37	.272	3.49	8.54
20	Darold Knowles D. Knowles	3.04	1052.1	757	63	71	.470	0	667	0	0	143	964	356	413	62	455	37	417	83	4,478	28	5.70	3.89	1.47	0.53	14.9	10.2	1.35	.277	3.53	8.24
21	Paul Lindblad P. Lindblad	3.10	1045.1	623	62	45	.579	0	582	0	0	64	955	360	409	87	333	24	258	85	4,343	27	5.01	2.87	1.75	0.75	13.4	7.7	1.23	.262	3.52	8.22
22	Jesse Orosco J. Orosco	3.12	1277.0	1,248	87	78	.527	0	1,169	0	0	144	1,035	442	499	112	568	34	501	85	5,374	40	8.24	4.00	2.06	0.79	21.8	10.6	1.26	.264	3.52	7.29
23	Eddie Fisher E. Fisher	3.12	1186.1	627	62	51	.549	0	643	0	0	82	1,019	411	470	105	346	21	344	38	4,837	47	4.88	2.62	1.86	0.80	13.3	7.2	1.15	.246	3.57	7.73
24	Lindy McDaniel L. McDaniel	3.14	1694.2	913	119	88	.575	0	1,165	0	0	174	1,590	591	682	122	486	11	577	120	7,019	92	6.19	2.58	2.40	0.65	16.6	6.9	1.23	.280	3.62	8.44
25	Jeff Reardon J. Reardon	3.16	1132.1	880	73	77	.487	0	877	0	0	367	1,000	397	426	109	358	27	695	65	4,720	20	6.97	2.85	2.45	0.87	18.6	7.6	1.20	.266	3.39	7.95