teams after 1980 with the lowest era single season all-time

Since 1981, the Houston Astros have the best ERA by a team in a season, with an ERA of 2.66 in 1981.

	TEAM	ERA	SEASON	G	W%	W	L	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Astros	2.66	1981	110	.555	61	49	110	610	23	13	25	990.0	842	293	331	40	300	11	24	4,034	36	5.55	2.73	2.03	0.36	15.1	7.4	1.15	.261	3.01	7.65
2	Dodgers	2.80	2022	162	.685	111	51	162	1,465	1	1	43	1451.1	1,114	451	513	152	407	75	13	5,865	38	9.08	2.52	3.60	0.94	25.0	6.9	1.05	.255	3.18	6.91
3	Astros	2.90	2022	162	.654	106	56	162	1,524	3	1	53	1445.1	1,121	465	518	134	458	60	6	5,856	56	9.49	2.85	3.33	0.83	26.0	7.8	1.09	.268	3.23	6.98
4	Yankees	2.90	1981	107	.551	59	48	107	606	16	0	30	948.0	827	305	343	64	287	10	17	3,872	25	5.75	2.72	2.11	0.61	15.7	7.4	1.18	.263	3.26	7.85
5	Mets	2.91	1988	160	.625	100	60	160	1,100	31	17	46	1439.0	1,253	465	532	78	404	35	33	5,877	41	6.88	2.53	2.72	0.49	18.7	6.9	1.15	.276	3.33	7.84
6	Cardinals	2.94	2015	162	.617	100	62	162	1,329	1	0	62	1464.2	1,359	478	525	123	477	45	37	6,134	48	8.17	2.93	2.79	0.76	21.7	7.8	1.25	.297	3.23	8.35
7	Dodgers	2.95	1989	160	.481	77	83	160	1,052	25	14	36	1463.1	1,278	479	536	95	504	27	73	6,034	53	6.47	3.10	2.09	0.58	17.4	8.4	1.22	.272	3.30	7.86
8	Dodgers	2.96	1985	162	.586	95	67	162	979	37	16	36	1465.0	1,280	482	579	102	462	21	56	6,043	42	6.01	2.84	2.12	0.63	16.2	7.6	1.19	.263	3.56	7.86
9	Dodgers	2.96	1988	162	.584	94	67	162	1,029	32	15	49	1463.1	1,291	482	544	84	473	22	61	6,050	43	6.33	2.91	2.18	0.52	17.0	7.8	1.21	.272	3.35	7.94
10	Dodgers	3.01	1981	110	.573	63	47	110	603	26	15	24	997.0	904	333	356	54	302	14	38	4,099	19	5.44	2.73	2.00	0.49	14.7	7.4	1.21	.272	3.21	8.16
11	Dodgers	3.01	2021	162	.654	106	56	162	1,599	1	0	56	1452.0	1,107	486	561	161	486	63	43	5,948	52	9.91	3.01	3.29	1.00	26.9	8.2	1.10	.260	3.48	6.86
12	Phillies	3.02	2011	162	.630	102	60	162	1,299	18	7	47	1477.0	1,320	495	529	120	404	47	41	6,069	23	7.92	2.46	3.22	0.73	21.4	6.7	1.17	.286	3.22	8.04
13	Dodgers	3.02	2020	60	.717	43	17	60	517	0	0	15	538.2	424	181	213	66	145	21	4	2,172	24	8.64	2.42	3.57	1.10	23.8	6.7	1.06	.252	3.56	7.08
14	Nationals	3.03	2014	162	.593	96	66	162	1,288	5	4	45	1470.2	1,351	495	555	110	352	51	26	6,020	37	7.88	2.15	3.66	0.67	21.4	5.8	1.16	.294	3.40	8.27
15	Dodgers	3.06	1991	162	.574	93	69	162	1,028	15	7	40	1458.0	1,312	496	565	96	500	28	77	6,089	48	6.35	3.09	2.06	0.59	16.9	8.2	1.24	.274	3.49	8.10
16	Expos	3.08	1988	163	.500	81	81	163	923	18	6	43	1482.2	1,310	508	592	122	476	36	61	6,129	39	5.60	2.89	1.94	0.74	15.1	7.8	1.20	.260	3.59	7.95
17	Athletics	3.09	1989	162	.611	99	63	162	930	17	3	57	1448.1	1,287	497	576	103	510	28	23	6,026	71	5.78	3.17	1.82	0.64	15.4	8.5	1.24	.266	3.58	8.00
18	Cardinals	3.10	1985	162	.623	101	61	162	798	37	17	44	1464.0	1,343	505	572	98	453	28	80	6,048	33	4.91	2.78	1.76	0.60	13.2	7.5	1.23	.267	3.52	8.26
19	Dodgers	3.10	1983	163	.562	91	71	163	1,000	27	10	40	1464.0	1,336	505	609	97	495	20	78	6,132	38	6.15	3.04	2.02	0.60	16.3	8.1	1.25	.274	3.74	8.21
20	Mets	3.11	1985	162	.605	98	64	162	1,039	32	12	37	1488.0	1,306	514	568	111	515	18	36	6,146	41	6.28	3.11	2.02	0.67	16.9	8.4	1.22	.268	3.44	7.90
21	Pirates	3.11	1984	162	.463	75	87	162	995	27	8	34	1470.0	1,344	508	567	102	502	11	48	6,095	43	6.09	3.07	1.98	0.62	16.3	8.2	1.26	.277	3.47	8.23
22	Mets	3.11	1986	162	.667	108	54	162	1,083	27	7	46	1484.0	1,304	513	578	103	509	31	29	6,165	40	6.57	3.09	2.13	0.62	17.6	8.3	1.22	.271	3.51	7.91
23	Astros	3.11	2018	162	.636	103	59	162	1,687	2	2	46	1455.0	1,164	503	534	152	435	66	4	5,913	67	10.44	2.69	3.88	0.94	28.5	7.4	1.10	.283	3.30	7.20
24	Braves	3.13	2002	161	.631	101	59	161	1,058	3	2	57	1467.1	1,302	511	565	123	554	42	63	6,131	40	6.49	3.40	1.91	0.75	17.3	9.0	1.26	.271	3.47	7.99
25	Braves	3.14	1993	162	.642	104	58	162	1,036	18	5	46	1455.0	1,297	507	559	101	480	22	59	6,015	46	6.41	2.97	2.16	0.62	17.2	8.0	1.22	.273	3.46	8.02