mlb teams with the least allowed average runs per game in a season since 1970

The Atlanta Braves had 4.77 runs allowed per game pitched in 1970.

	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	Braves	4.77	772	162	1970	.469	76	86	162	4.33	960	45	9	24	1430.2	1,451	688	185	478	30	42	6,179	44	6.04	3.01	2.01	1.16	15.5	7.7	1.35	.280	4.86	9.13
2	Cubs	4.19	679	162	1970	.519	84	78	162	3.76	1,000	59	8	25	1435.0	1,402	599	143	475	25	58	6,086	40	6.27	2.98	2.11	0.90	16.4	7.8	1.31	.283	4.26	8.79
3	Reds	4.2	681	162	1970	.630	102	60	162	3.69	843	32	9	60	1444.2	1,370	592	118	592	29	74	6,184	43	5.25	3.69	1.42	0.74	13.6	9.6	1.36	.272	4.24	8.53
4	Pirates	4.1	664	162	1970	.549	89	73	162	3.70	990	36	12	43	1453.2	1,386	597	106	625	36	84	6,197	35	6.13	3.87	1.58	0.66	16.0	10.1	1.38	.288	4.11	8.58
5	Giants	5.1	826	162	1970	.531	86	76	162	4.50	931	50	6	30	1457.2	1,514	729	156	604	30	57	6,408	76	5.75	3.73	1.54	0.96	14.5	9.4	1.45	.290	5.10	9.35
6	Phillies	4.53	730	161	1970	.453	73	88	161	4.17	1,047	24	6	36	1461.0	1,483	677	132	538	33	51	6,294	52	6.45	3.31	1.95	0.81	16.6	8.5	1.38	.297	4.50	9.14
7	Dodgers	4.25	684	161	1970	.540	87	74	161	3.82	880	37	13	42	1458.2	1,394	619	164	496	34	49	6,192	49	5.43	3.06	1.77	1.01	14.2	8.0	1.30	.266	4.22	8.60
8	Cardinals	4.61	747	162	1970	.469	76	86	162	4.06	960	51	10	20	1475.2	1,483	665	102	632	22	102	6,425	66	5.85	3.85	1.52	0.62	14.9	9.8	1.43	.293	4.56	9.04
9	Red Sox	4.46	722	162	1970	.537	87	75	162	3.87	1,003	38	7	44	1446.1	1,391	622	156	594	44	49	6,258	70	6.24	3.70	1.69	0.97	16.0	9.5	1.37	.277	4.49	8.66
10	White Sox	5.07	822	162	1970	.346	56	106	162	4.54	762	20	5	30	1430.1	1,554	722	164	556	44	67	6,272	63	4.79	3.50	1.37	1.03	12.1	8.9	1.48	.293	5.17	9.78
11	Indians	4.17	675	162	1970	.469	76	86	162	3.91	1,076	34	5	35	1451.1	1,333	630	163	689	40	62	6,228	53	6.67	4.27	1.56	1.01	17.3	11.1	1.39	.275	4.19	8.27
12	Tigers	4.51	731	162	1970	.488	79	83	162	4.09	1,045	33	7	39	1447.1	1,443	658	153	623	35	31	6,319	56	6.50	3.87	1.68	0.95	16.5	9.9	1.43	.289	4.55	8.97
13	Orioles	3.54	574	162	1970	.667	108	54	162	3.15	941	60	12	31	1478.2	1,317	517	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
14	Athletics	3.66	593	162	1970	.549	89	73	162	3.30	858	33	11	40	1442.2	1,253	529	134	542	34	45	6,029	56	5.35	3.38	1.58	0.84	14.2	9.0	1.24	.251	3.70	7.82
15	Twins	3.73	605	162	1970	.605	98	64	162	3.23	940	26	8	58	1448.1	1,329	520	130	486	37	51	6,071	38	5.84	3.02	1.93	0.81	15.5	8.0	1.25	.268	3.76	8.26
16	Yankees	3.75	612	163	1970	.574	93	69	163	3.24	777	36	5	49	1471.2	1,386	530	130	451	26	54	6,143	32	4.75	2.76	1.72	0.80	12.6	7.3	1.25	.264	3.74	8.48
17	Angels	3.89	630	162	1970	.531	86	76	162	3.48	922	21	8	49	1462.1	1,280	566	154	559	43	67	6,100	52	5.67	3.44	1.65	0.95	15.1	9.2	1.26	.255	3.88	7.88
18	Senators	4.25	689	162	1970	.432	70	92	162	3.80	823	20	7	40	1457.2	1,375	615	139	611	27	75	6,207	51	5.08	3.77	1.35	0.86	13.3	9.8	1.36	.268	4.25	8.49
19	Astros	4.71	763	162	1970	.488	79	83	162	4.23	942	36	5	35	1456.0	1,491	685	131	577	41	45	6,337	91	5.82	3.57	1.63	0.81	14.9	9.1	1.42	.293	4.72	9.22
20	Mets	3.89	630	162	1970	.512	83	79	162	3.45	1,064	47	10	32	1459.2	1,260	559	135	575	26	96	6,134	48	6.56	3.55	1.85	0.83	17.3	9.4	1.26	.260	3.88	7.77
21	Royals	4.35	705	162	1970	.401	65	97	162	3.78	915	30	7	25	1463.2	1,346	615	138	641	34	29	6,253	56	5.63	3.94	1.43	0.85	14.6	10.3	1.36	.267	4.34	8.28
22	Expos	4.98	807	162	1970	.451	73	89	162	4.50	914	29	10	32	1438.2	1,434	720	162	716	49	76	6,347	49	5.72	4.48	1.28	1.01	14.4	11.3	1.49	.282	5.05	8.97
23	Padres	4.86	788	162	1970	.389	63	99	162	4.36	886	24	6	32	1440.1	1,483	697	149	611	38	92	6,326	39	5.54	3.82	1.45	0.93	14.0	9.7	1.45	.287	4.92	9.27
24	Brewers	4.61	751	163	1970	.401	65	97	163	4.21	895	31	2	27	1446.2	1,397	676	146	587	45	68	6,236	46	5.57	3.65	1.52	0.91	14.4	9.4	1.37	.274	4.67	8.69
25	Braves	4.31	699	162	1971	.506	82	80	162	3.75	823	40	10	31	1474.2	1,529	614	152	485	28	65	6,311	56	5.02	2.96	1.70	0.93	13.0	7.7	1.37	.286	4.27	9.33