era leaders in mlb history, minimum 500 ip, maximum 50 saves, maximum 5 starts

Darren O'Day has the lowest career ERA with at most 50 saves, when pitching at least 500 innings and starting at most 5 games, with an ERA of 2.59.

	NAME	ERA	IP	SV	GS	G	W	L	W%	SO	CG	SHO	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Darren O'Day D. O'Day	2.59	609.0	21	0	644	42	21	.667	637	0	0	458	175	189	64	172	50	155	24	2,461	3	9.41	2.54	3.70	0.95	25.9	7.0	1.03	.256	2.79	61	3.48	82	6.77	52.4
2	Tony Watson T. Watson	2.90	648.1	32	0	689	47	29	.618	570	0	0	528	209	222	63	174	33	109	20	2,620	5	7.91	2.42	3.28	0.87	21.8	6.6	1.08	.261	3.08	73	3.59	91	7.33	24.5
3	Jared Hughes J. Hughes	2.96	541.1	12	0	542	30	26	.536	371	0	0	480	178	210	47	190	40	129	25	2,247	29	6.17	3.16	1.95	0.78	16.5	8.5	1.24	.271	3.49	74	4.17	103	7.98	-8.5
4	Steve Mingori S. Mingori	3.03	584.2	42	2	385	18	33	.353	329	0	0	544	197	237	45	225	18	173	53	2,491	16	5.06	3.46	1.46	0.69	13.2	9.0	1.32	.266	3.65	80	3.70	99	8.37	1.3
5	Jesse Crain J. Crain	3.05	532.0	4	0	532	45	30	.600	440	0	0	449	180	205	44	206	18	116	27	2,221	14	7.44	3.48	2.14	0.74	19.8	9.3	1.23	.268	3.47	71	3.76	89	7.60	27.6
6	Joe Smith J. Smith	3.14	762.1	30	0	866	55	34	.618	666	0	0	653	266	289	66	254	40	176	31	3,150	19	7.86	3.00	2.62	0.78	21.1	8.1	1.19	.276	3.41	77	3.65	89	7.71	39
7	Larry Andersen L. Andersen	3.15	995.1	49	1	699	40	39	.506	758	0	0	932	348	402	58	311	17	267	64	4,171	21	6.85	2.81	2.44	0.52	18.2	7.5	1.25	.289	3.63	83	3.00	79	8.43	83.9
8	Pedro Strop P. Strop	3.20	505.2	32	0	561	29	30	.492	554	0	0	360	180	194	34	232	37	141	19	2,111	54	9.86	4.13	2.39	0.61	26.2	11.0	1.17	.260	3.45	78	3.40	83	6.41	38.8
9	Chad Bradford C. Bradford	3.26	515.2	11	0	561	36	28	.563	313	0	0	527	187	214	28	137	29	115	39	2,180	4	5.46	2.39	2.28	0.49	14.4	6.3	1.29	.298	3.73	73	3.54	79	9.20	53.7
10	Doug Sisk D. Sisk	3.27	523.1	33	0	332	22	20	.524	195	0	0	527	190	238	15	267	20	161	33	2,298	15	3.35	4.59	0.73	0.26	8.5	11.6	1.52	.284	4.09	89	4.03	109	9.06	-19.2
11	Luis Ayala L. Ayala	3.34	554.1	19	0	534	38	47	.447	367	0	0	581	206	233	54	139	35	161	24	2,340	11	5.96	2.26	2.64	0.88	15.7	5.9	1.30	.302	3.78	79	3.95	93	9.43	19.9
12	Bob Humphreys B. Humphreys	3.36	566.0	20	4	319	27	21	.563	364	0	0	482	211	240	55	219	13	116	25	2,342	13	5.79	3.48	1.66	0.87	15.5	9.4	1.24	.253	3.82	101	3.73	108	7.66	-16.6
13	Pete Mikkelsen P. Mikkelsen	3.38	653.1	48	3	364	45	40	.529	436	0	0	576	245	288	59	250	30	189	52	2,762	26	6.01	3.44	1.74	0.81	15.8	9.1	1.26	.260	3.97	98	3.65	109	7.93	-20.9
14	Andrew Chafin A. Chafin	3.39	534.0	20	3	633	22	28	.440	578	0	0	458	201	222	38	231	16	103	18	2,257	33	9.74	3.89	2.50	0.64	25.6	10.2	1.29	.301	3.74	80	3.31	80	7.72	48.7
15	Jeff Nelson J. Nelson	3.41	784.2	33	0	798	48	45	.516	829	0	0	633	297	329	55	428	64	237	59	3,402	36	9.51	4.91	1.94	0.63	24.4	12.6	1.35	.285	3.77	76	3.72	84	7.26	67.2
16	Matt Thornton M. Thornton	3.41	662.2	23	1	748	36	46	.439	642	0	0	594	251	273	52	251	20	170	37	2,799	28	8.72	3.41	2.56	0.71	22.9	9.0	1.28	.296	3.71	79	3.40	79	8.07	66.8
17	Dave Heaverlo D. Heaverlo	3.41	537.2	26	0	356	26	26	.500	288	0	0	559	204	235	41	188	18	172	55	2,321	14	4.82	3.15	1.53	0.69	12.4	8.1	1.39	.290	3.93	90	3.73	96	9.36	6.9
18	Aaron Loup A. Loup	3.43	515.0	8	2	591	23	30	.434	480	0	0	486	196	233	39	162	50	95	21	2,197	16	8.39	2.83	2.96	0.68	21.8	7.4	1.26	.305	4.07	83	3.49	84	8.49	37.6
19	Craig Breslow C. Breslow	3.45	570.2	8	2	576	23	30	.434	442	0	0	536	219	250	56	226	17	137	18	2,428	25	6.97	3.56	1.96	0.88	18.2	9.3	1.34	.285	3.94	83	4.09	101	8.45	-2.8
20	Javier Lopez J. Lopez	3.48	533.1	14	0	839	30	17	.638	358	0	0	484	206	227	26	235	27	163	38	2,273	16	6.04	3.97	1.52	0.44	15.8	10.3	1.35	.281	3.83	82	3.85	95	8.17	10.5
21	Cecilio Guante C. Guante	3.48	595.0	35	1	363	29	34	.460	503	0	0	512	230	256	61	236	27	164	38	2,519	14	7.61	3.57	2.13	0.92	20.0	9.4	1.26	.267	3.87	90	3.72	97	7.74	6.2
22	Adam Ottavino A. Ottavino	3.48	744.2	46	3	727	41	43	.488	862	0	0	628	288	308	72	330	50	168	32	3,167	66	10.42	3.99	2.61	0.87	27.2	10.4	1.29	.300	3.72	79	3.61	85	7.59	49.8
23	Damaso Marte D. Marte	3.48	503.2	36	0	570	23	27	.460	533	0	0	405	195	209	48	229	26	137	30	2,118	15	9.52	4.09	2.33	0.86	25.2	10.8	1.26	.278	3.73	78	3.71	82	7.24	44.9
24	Jason Frasor J. Frasor	3.49	646.2	36	0	679	35	35	.500	615	0	0	568	251	267	56	283	23	205	32	2,747	38	8.56	3.94	2.17	0.78	22.4	10.3	1.32	.289	3.72	80	3.73	87	7.91	40.9
25	Steve Kline S. Kline	3.51	682.1	39	1	796	34	39	.466	493	0	0	649	266	293	60	295	26	231	48	2,940	26	6.50	3.89	1.67	0.79	16.8	10.0	1.38	.285	3.86	80	4.19	95	8.56	16.3