least amount of runs per game allowed by a team in a season since 1970

Since 1970, the Baltimore Orioles have the fewest runs allowed per game pitched by a team in a season, with 2.79 in 1972.

	TEAM	R/G	R	G	SEASON	W%	W	L	GS	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Orioles	2.79	430	154	1972	.519	80	74	154	2.53	788	62	18	21	1371.2	1,116	386	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	Athletics	2.95	457	155	1972	.600	93	62	155	2.58	862	42	15	43	1417.2	1,170	406	96	418	19	41	5,718	29	5.47	2.65	2.06	0.61	15.1	7.3	1.12	.248	2.90	7.43
3	Astros	3.01	331	110	1981	.555	61	49	110	2.66	610	23	13	25	990.0	842	293	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
4	Dodgers	3.17	513	162	2022	.685	111	51	162	2.80	1,465	1	1	43	1451.1	1,114	451	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
5	Astros	3.2	518	162	2022	.654	106	56	162	2.90	1,524	3	1	53	1445.1	1,121	465	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
6	Yankees	3.21	343	107	1981	.551	59	48	107	2.90	606	16	0	30	948.0	827	305	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
7	Dodgers	3.24	356	110	1981	.573	63	47	110	3.01	603	26	15	24	997.0	904	333	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
8	Cardinals	3.24	525	162	2015	.617	100	62	162	2.94	1,329	1	0	62	1464.2	1,359	478	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
9	Phillies	3.27	529	162	2011	.630	102	60	162	3.02	1,299	18	7	47	1477.0	1,320	495	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
10	Mets	3.27	203	62	2025	.629	39	23	62	2.83	558	0	0	19	553.1	456	174	44	222	24	3	2,319	24	9.08	3.61	2.51	0.72	24.1	9.6	1.23	.280	3.30	7.42
11	Tigers	3.29	514	156	1972	.551	86	70	156	2.96	952	46	11	33	1388.1	1,212	457	101	465	47	41	5,748	41	6.17	3.01	2.05	0.65	16.6	8.1	1.21	.266	3.33	7.86
12	Astros	3.3	534	162	2018	.636	103	59	162	3.11	1,687	2	2	46	1455.0	1,164	503	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
13	Dodgers	3.3	534	162	1975	.543	88	74	162	2.92	894	51	17	21	1469.2	1,215	477	104	448	28	20	6,015	34	5.47	2.74	2.00	0.64	14.9	7.4	1.13	.245	3.27	7.44
14	Pirates	3.3	512	155	1972	.619	96	59	155	2.81	838	39	9	48	1414.1	1,282	441	90	433	29	60	5,845	34	5.33	2.76	1.94	0.57	14.3	7.4	1.21	.268	3.26	8.16
15	Mets	3.32	538	162	1976	.531	86	76	162	2.94	1,025	53	17	25	1449.0	1,248	473	97	419	23	56	5,908	43	6.37	2.60	2.45	0.60	17.3	7.1	1.15	.265	3.34	7.75
16	Mets	3.33	532	160	1988	.625	100	60	160	2.91	1,100	31	17	46	1439.0	1,253	465	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
17	Indians	3.33	519	156	1972	.462	72	84	156	2.92	846	47	11	25	1410.0	1,232	457	123	534	40	92	5,877	43	5.40	3.41	1.58	0.79	14.4	9.1	1.25	.256	3.31	7.86
18	Dodgers	3.35	536	160	1989	.481	77	83	160	2.95	1,052	25	14	36	1463.1	1,278	479	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
19	Dodgers	3.35	543	162	1976	.568	92	70	162	3.02	747	47	16	28	1470.2	1,330	493	97	479	23	31	6,085	32	4.57	2.93	1.56	0.59	12.3	7.9	1.23	.260	3.32	8.14
20	Orioles	3.35	530	158	1971	.639	101	57	158	2.99	793	71	13	22	1415.1	1,257	470	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
21	Dodgers	3.36	544	162	1988	.584	94	67	162	2.96	1,029	32	15	49	1463.1	1,291	482	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
22	Braves	3.38	548	162	2013	.593	96	66	162	3.18	1,232	1	0	53	1450.1	1,326	512	127	409	51	35	5,989	50	7.65	2.54	3.01	0.79	20.6	6.8	1.20	.288	3.40	8.23
23	Mets	3.4	550	162	1971	.512	83	79	162	2.99	1,157	42	9	22	1466.1	1,227	487	100	529	40	63	6,078	41	7.10	3.25	2.19	0.61	19.0	8.7	1.20	.265	3.38	7.53
24	Dodgers	3.4	527	155	1972	.548	85	70	155	2.78	856	50	21	29	1403.0	1,196	434	83	429	34	36	5,795	43	5.49	2.75	2.00	0.53	14.8	7.4	1.16	.253	3.38	7.67
25	Yankees	3.4	527	155	1972	.510	79	76	155	3.05	625	35	14	39	1373.1	1,306	465	87	419	30	61	5,726	47	4.10	2.75	1.49	0.57	10.9	7.3	1.26	.267	3.45	8.56