fewest runs per game allowed in a season by a team since 1973

Since 1973, the Houston Astros have the fewest runs allowed per game pitched by a team in a season, with 3.01 in 1981.

	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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	Mets	3.27	196	60	2025	.633	38	22	60	2.83	536	0	0	19	535.0	443	168	41	217	23	2	2,245	24	9.02	3.65	2.47	0.69	23.9	9.7	1.23	.282	3.30	7.45
9	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
10	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
11	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
12	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
13	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
14	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
15	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
16	Rangers	3.38	206	61	2025	.475	29	32	61	3.13	471	1	1	17	531.1	436	185	52	174	17	4	2,176	23	7.98	2.95	2.71	0.88	21.6	8.0	1.15	.263	3.49	7.39
17	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
18	Athletics	3.4	551	162	1974	.556	90	72	162	2.95	755	49	11	28	1439.2	1,322	472	90	430	25	41	5,937	27	4.72	2.69	1.76	0.56	12.7	7.2	1.22	.266	3.44	8.26
19	Royals	3.41	208	61	2025	.525	32	29	61	3.19	496	0	0	20	544.1	477	193	58	171	16	8	2,243	25	8.20	2.83	2.90	0.96	22.1	7.6	1.19	.279	3.44	7.89
20	Mariners	3.42	554	162	2014	.537	87	75	162	3.17	1,317	2	1	51	1452.0	1,240	512	137	463	52	36	5,974	80	8.16	2.87	2.84	0.85	22.0	7.8	1.17	.275	3.43	7.69
21	Nationals	3.43	555	162	2014	.593	96	66	162	3.03	1,288	5	4	45	1470.2	1,351	495	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
22	Cubs	3.43	556	162	2016	.640	103	58	162	3.15	1,441	5	2	38	1459.2	1,125	511	163	495	63	24	5,933	80	8.88	3.05	2.91	1.01	24.3	8.3	1.11	.255	3.43	6.94
23	Dodgers	3.43	556	162	2003	.525	85	77	162	3.16	1,289	3	3	58	1457.2	1,254	511	127	526	40	35	6,001	50	7.96	3.25	2.45	0.78	21.5	8.8	1.22	.280	3.43	7.74
24	Phillies	3.44	557	162	1976	.623	101	61	162	3.08	918	34	4	44	1459.0	1,377	499	98	397	19	43	6,024	38	5.66	2.45	2.31	0.60	15.2	6.6	1.22	.279	3.44	8.49
25	Giants	3.45	207	60	2025	.550	33	27	60	3.05	521	0	0	17	528.0	450	179	41	178	20	6	2,180	19	8.88	3.03	2.93	0.70	23.9	8.2	1.19	.288	3.53	7.67