lowest all-time era- with a minimum of 200 games

Emmanuel Clase had the lowest ERA- when pitching in 200+ games, with an ERA- of 45.

Interpreted as:

lowest all-time era- by a player with a minimum of 200 games

	NAME	ERA-	G	W	L	W%	GS	ERA	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	FIP	FIP-	H/9	PRAA
1	Emmanuel Clase E. Clase	45	366	21	25	.457	1	1.88	349	0	0	182	360.0	267	75	111	15	70	9	297	10	1,417	19	8.73	1.75	4.99	0.38	24.6	4.9	0.94	.259	2.78	2.42	58	6.68	68.9
2	Mariano Rivera M. Rivera	49	1,115	82	60	.577	10	2.21	1,173	0	0	652	1283.2	998	315	340	71	286	46	952	41	5,103	13	8.22	2.01	4.10	0.50	23.0	5.6	1.00	.263	2.38	2.76	61	7.00	246.7
3	Billy Wagner B. Wagner	54	853	47	40	.540	0	2.31	1,196	0	0	422	903.0	601	232	262	82	300	33	703	26	3,600	43	11.92	2.99	3.99	0.82	33.2	8.3	1.00	.261	2.61	2.72	63	5.99	159
4	Takashi Saito T. Saito	55	338	21	15	.583	0	2.34	400	0	0	84	338.0	250	88	99	25	108	14	189	13	1,363	9	10.65	2.88	3.70	0.67	29.3	7.9	1.06	.276	2.64	2.80	66	6.66	55.7
5	Jonathan Papelbon J. Papelbon	58	689	41	36	.532	3	2.44	808	0	0	368	725.2	572	197	226	57	185	34	585	18	2,938	14	10.02	2.29	4.37	0.71	27.5	6.3	1.04	.278	2.80	2.80	69	7.09	105.2
6	Devin Williams D. Williams	59	290	30	15	.667	0	2.44	434	0	0	85	280.2	164	76	94	20	131	15	125	4	1,144	17	13.92	4.20	3.31	0.64	37.9	11.5	1.05	.265	3.01	2.56	60	5.26	52.8
7	Akinori Otsuka A. Otsuka	59	236	13	15	.464	0	2.44	217	0	0	39	232.0	190	63	71	12	80	2	96	15	951	4	8.42	3.10	2.71	0.47	22.8	8.4	1.16	.278	2.75	2.95	69	7.37	35.7
8	Jhoan Duran J. Duran	60	227	17	23	.425	0	2.42	295	0	0	78	237.2	185	64	83	17	74	17	136	14	968	17	11.17	2.80	3.99	0.64	30.5	7.6	1.09	.297	3.14	2.75	67	7.01	35.7
9	Mike Adams M. Adams	60	408	21	20	.512	0	2.41	409	0	0	4	407.1	316	109	122	33	126	6	60	12	1,653	7	9.04	2.78	3.25	0.73	24.7	7.6	1.09	.262	2.70	3.09	75	6.98	45.6
10	Darren O'Day D. O'Day	61	644	42	21	.667	0	2.59	637	0	0	21	609.0	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	3.48	82	6.77	52.4
11	Dellin Betances D. Betances	61	374	21	23	.477	1	2.53	633	0	0	36	394.1	240	111	124	26	183	28	86	5	1,613	28	14.45	4.18	3.46	0.59	39.2	11.3	1.07	.288	2.83	2.39	56	5.48	78.8
12	Koji Uehara K. Uehara	62	436	22	26	.458	12	2.66	572	0	0	95	480.2	350	142	153	60	78	4	207	9	1,862	9	10.71	1.46	7.33	1.12	30.7	4.2	0.89	.253	2.86	2.84	68	6.55	69.2
13	Bryan Harvey B. Harvey	62	322	17	25	.405	0	2.49	448	0	0	177	387.0	278	107	122	30	144	2	278	19	1,582	25	10.42	3.35	3.11	0.70	28.3	9.1	1.09	.259	2.84	2.62	65	6.47	59.8
14	Andrés Muñoz A. Muñoz	62	246	12	21	.364	0	2.41	330	0	0	67	243.0	153	65	77	17	98	14	109	12	976	18	12.22	3.63	3.37	0.63	33.8	10.0	1.03	.263	2.85	2.73	68	5.67	34.7
15	Aroldis Chapman A. Chapman	62	846	58	46	.558	0	2.55	1,311	0	0	356	805.2	468	228	253	54	406	33	548	7	3,284	84	14.65	4.54	3.23	0.60	39.9	12.4	1.08	.280	2.83	2.38	57	5.23	156.2
16	Bryan Abreu B. Abreu	63	300	16	11	.593	0	2.56	422	0	0	9	312.2	219	89	99	24	142	21	50	0	1,292	19	12.15	4.09	2.97	0.69	32.7	11.0	1.15	.286	2.85	3.02	73	6.30	38
17	Craig Kimbrel C. Kimbrel	63	838	56	47	.544	0	2.59	1,266	0	0	440	810.2	483	233	259	73	340	40	651	11	3,260	70	14.06	3.77	3.72	0.81	38.8	10.4	1.02	.266	2.88	2.58	63	5.36	131.9
18	Felipe Vazquez F. Vazquez	63	323	17	13	.567	0	2.61	402	0	0	89	330.2	254	96	109	22	101	16	175	7	1,348	13	10.94	2.75	3.98	0.60	29.8	7.5	1.07	.287	2.97	2.65	64	6.91	55.7
19	Tom Henke T. Henke	64	642	41	42	.494	0	2.67	861	0	0	311	789.2	607	234	252	64	255	9	548	29	3,194	30	9.81	2.91	3.38	0.73	27.0	8.0	1.09	.271	2.87	2.71	66	6.92	123.5
20	Josh Hader J. Hader	64	468	34	31	.523	0	2.64	829	0	0	226	512.1	282	150	164	65	198	24	321	6	2,019	19	14.56	3.48	4.19	1.14	41.1	9.8	0.94	.240	2.88	2.88	69	4.95	75.7
21	Roberto Osuna R. Osuna	64	314	14	18	.438	0	2.74	348	0	0	155	315.0	230	96	101	28	55	13	247	6	1,227	17	9.94	1.57	6.33	0.80	28.4	4.5	0.90	.258	2.89	2.75	64	6.57	54.1
22	Clayton Kershaw C. Kershaw	64	446	218	96	.694	443	2.52	3,014	25	15	0	2814.1	2,162	787	864	233	697	46	1	28	11,112	107	9.64	2.23	4.32	0.75	27.1	6.3	1.02	.271	2.76	2.84	70	6.91	369.9
23	Kenley Jansen K. Jansen	65	918	53	38	.582	0	2.58	1,263	0	0	467	911.1	605	261	280	86	276	31	687	20	3,621	21	12.47	2.73	4.58	0.85	34.9	7.6	0.97	.264	2.77	2.59	64	5.97	147.1
24	Jason Adam J. Adam	65	333	26	14	.650	0	2.67	383	0	0	24	327.0	214	97	112	33	124	33	77	11	1,322	14	10.54	3.41	3.09	0.91	29.0	9.4	1.03	.242	3.08	3.57	87	5.89	18.2
25	Jacob deGrom J. deGrom	65	241	94	62	.603	241	2.55	1,809	4	2	0	1502.1	1,149	426	463	139	338	24	0	13	5,901	28	10.84	2.02	5.35	0.83	30.7	5.7	0.99	.281	2.77	2.67	65	6.88	238.3