which orioles team had the lowest era in a season since 1950

Since 1950, the Baltimore Orioles have the lowest ERA by a team in a season, with an ERA of 2.53 in 1972.

	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	Orioles	2.53	1972	154	.519	80	74	154	788	62	18	21	1371.2	1,116	386	430	85	395	15	52	5,493	35	5.17	2.59	1.99	0.56	14.3	7.2	1.10	.245	2.82	7.32
2	Orioles	2.66	1968	162	.562	91	71	162	1,044	53	15	31	1451.0	1,111	429	497	101	502	46	42	5,864	53	6.48	3.11	2.08	0.63	17.8	8.6	1.11	.242	3.08	6.89
3	Orioles	2.83	1969	162	.673	109	53	162	897	50	19	36	1473.2	1,194	463	517	117	498	22	55	5,972	34	5.48	3.04	1.80	0.71	15.0	8.3	1.15	.243	3.16	7.29
4	Orioles	2.98	1965	162	.580	94	68	162	939	32	9	41	1477.2	1,268	490	578	120	510	26	48	6,094	36	5.72	3.11	1.84	0.73	15.4	8.4	1.20	.255	3.52	7.72
5	Orioles	2.99	1971	158	.639	101	57	158	793	71	13	22	1415.1	1,257	470	530	125	416	18	37	5,799	37	5.04	2.65	1.91	0.79	13.7	7.2	1.18	.255	3.37	7.99
6	Orioles	3.07	1973	162	.599	97	65	162	715	67	13	26	1461.2	1,297	498	561	124	475	20	35	5,989	37	4.40	2.92	1.51	0.76	11.9	7.9	1.21	.252	3.45	7.99
7	Orioles	3.15	1970	162	.667	108	54	162	941	60	12	31	1478.2	1,317	517	574	139	469	23	40	6,099	44	5.73	2.85	2.01	0.85	15.4	7.7	1.21	.260	3.49	8.02
8	Orioles	3.16	1964	163	.599	97	65	163	939	44	16	42	1458.2	1,292	512	567	129	456	36	63	5,991	31	5.79	2.81	2.06	0.80	15.7	7.6	1.20	.262	3.50	7.97
9	Orioles	3.17	1975	159	.566	90	69	159	717	70	19	21	1451.0	1,285	511	553	110	500	12	46	5,943	42	4.45	3.10	1.43	0.68	12.1	8.4	1.23	.255	3.43	7.97
10	Orioles	3.22	1961	163	.586	95	67	163	926	54	20	33	1471.1	1,226	526	588	109	617	32	30	6,152	45	5.66	3.77	1.50	0.67	15.1	10.0	1.25	.250	3.60	7.50
11	Orioles	3.26	1979	159	.642	102	57	159	786	52	10	30	1434.1	1,279	520	582	133	467	14	20	5,897	36	4.93	2.93	1.68	0.83	13.3	7.9	1.22	.255	3.65	8.03
12	Orioles	3.27	1974	162	.562	91	71	162	701	57	15	25	1474.0	1,393	536	612	101	480	25	43	6,125	34	4.28	2.93	1.46	0.62	11.4	7.8	1.27	.268	3.74	8.51
13	Orioles	3.32	1976	162	.543	88	74	162	678	59	14	23	1468.2	1,396	541	598	80	489	23	40	6,137	37	4.15	3.00	1.39	0.49	11.0	8.0	1.28	.270	3.66	8.55
14	Orioles	3.32	1966	160	.606	97	63	160	1,070	23	7	51	1466.1	1,267	541	601	127	514	29	27	6,070	53	6.57	3.15	2.08	0.78	17.6	8.5	1.21	.263	3.69	7.78
15	Orioles	3.32	1967	161	.472	76	85	161	1,034	29	12	36	1457.1	1,218	538	592	116	566	30	34	6,037	59	6.39	3.50	1.83	0.72	17.1	9.4	1.22	.257	3.66	7.52
16	Orioles	3.40	1958	154	.484	74	79	154	749	55	12	29	1369.2	1,277	517	575	106	403	35	29	5,687	32	4.92	2.65	1.86	0.70	13.2	7.1	1.23	.266	3.78	8.39
17	Orioles	3.43	2014	162	.593	96	66	162	1,174	3	2	53	1461.1	1,342	557	593	151	472	59	25	6,104	42	7.23	2.91	2.49	0.93	19.2	7.7	1.24	.280	3.65	8.27
18	Orioles	3.45	1963	162	.531	86	76	162	913	35	8	43	1452.0	1,353	557	621	137	507	29	63	6,098	31	5.66	3.14	1.80	0.85	15.0	8.3	1.28	.270	3.85	8.39
19	Orioles	3.46	1957	154	.500	76	76	154	767	44	12	26	1408.0	1,272	542	588	95	493	27	38	5,863	29	4.90	3.15	1.56	0.61	13.1	8.4	1.25	.263	3.76	8.13
20	Orioles	3.52	1960	154	.578	89	65	154	785	48	10	23	1375.2	1,222	538	606	117	552	34	19	5,772	34	5.14	3.61	1.42	0.77	13.6	9.6	1.29	.258	3.96	7.99
21	Orioles	3.56	1959	155	.481	74	80	155	735	45	12	30	1400.1	1,290	554	621	111	476	30	40	5,857	36	4.72	3.06	1.54	0.71	12.5	8.1	1.26	.262	3.99	8.29
22	Orioles	3.56	1978	161	.559	90	71	161	754	65	14	33	1429.0	1,340	566	633	107	509	15	29	5,956	44	4.75	3.21	1.48	0.67	12.7	8.5	1.29	.270	3.99	8.44
23	Orioles	3.63	1983	162	.605	98	64	162	774	36	9	38	1452.1	1,451	585	652	130	452	10	25	6,105	36	4.80	2.80	1.71	0.81	12.7	7.4	1.31	.279	4.04	8.99
24	Orioles	3.64	1980	162	.617	100	62	162	789	42	7	41	1460.0	1,438	591	640	134	507	21	33	6,131	43	4.86	3.13	1.56	0.83	12.9	8.3	1.33	.279	3.95	8.86
25	Orioles	3.69	1962	162	.475	77	85	162	898	32	4	33	1462.1	1,373	600	680	147	549	28	48	6,204	46	5.53	3.38	1.64	0.90	14.5	8.8	1.31	.268	4.19	8.45