Since 1950, the Los Angeles Dodgers have the lowest ERA by a team, with an ERA of 3.50.

	TEAM	ERA	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	Dodgers	3.50	11,963	.555	6,631	5,320	11,963	80,670	1,893	616	2,761	107586.1	98,684	41,808	46,772	10,018	36,698	2,843	3,440	451,377	3,411	6.75	3.07	2.20	0.84	17.9	8.1	1.26	.276	3.91	8.26
2	Braves	3.77	11,951	.526	6,273	5,657	11,951	73,425	1,934	434	2,625	106959.0	103,143	44,820	50,045	10,141	38,409	2,708	3,803	454,769	3,479	6.18	3.23	1.91	0.85	16.1	8.4	1.32	.282	4.21	8.68
3	Yankees	3.78	11,949	.569	6,790	5,142	11,949	74,004	1,905	487	3,026	106899.1	101,909	44,910	49,711	10,648	37,986	3,009	2,269	452,760	3,345	6.23	3.20	1.95	0.90	16.3	8.4	1.31	.279	4.19	8.58
4	Giants	3.78	11,959	.518	6,192	5,760	11,959	73,271	1,766	454	2,691	107275.2	102,993	45,081	50,543	10,296	38,633	2,964	3,850	456,569	3,401	6.15	3.24	1.90	0.86	16.0	8.5	1.32	.280	4.24	8.64
5	Cardinals	3.80	11,951	.527	6,283	5,650	11,951	70,116	1,771	483	2,737	107081.0	104,093	45,166	50,237	10,060	37,790	3,088	3,592	455,000	3,306	5.89	3.18	1.86	0.85	15.4	8.3	1.33	.282	4.22	8.75
6	Astros	3.80	10,101	.503	5,077	5,019	10,101	69,286	1,138	343	2,273	90467.0	86,248	38,181	42,347	8,622	31,994	2,768	2,651	384,132	3,366	6.89	3.18	2.17	0.86	18.0	8.3	1.31	.286	4.21	8.58
7	Mets	3.80	10,094	.484	4,880	5,206	10,094	67,104	1,095	333	2,262	90307.2	86,606	38,176	42,469	8,877	32,225	2,755	3,181	383,993	2,847	6.69	3.21	2.08	0.88	17.5	8.4	1.32	.285	4.23	8.63
8	Padres	3.96	8,968	.468	4,196	4,770	8,968	58,683	668	203	2,168	80202.1	77,854	35,265	39,177	8,315	29,593	2,350	3,090	342,789	2,719	6.59	3.32	1.98	0.93	17.1	8.6	1.34	.285	4.40	8.74
9	White Sox	3.97	11,962	.501	5,980	5,958	11,962	70,904	1,851	457	2,725	106856.0	104,033	47,107	52,231	10,963	39,836	3,167	2,551	456,673	3,581	5.97	3.36	1.78	0.92	15.5	8.7	1.35	.280	4.40	8.76
10	Nationals	3.97	8,960	.482	4,314	4,642	8,960	58,110	790	251	2,173	80034.1	77,731	35,283	39,120	8,212	29,389	2,659	2,720	342,174	2,742	6.53	3.30	1.98	0.92	17.0	8.6	1.34	.285	4.40	8.74
11	Phillies	3.98	11,956	.498	5,942	6,000	11,956	75,141	1,907	460	2,444	106858.0	105,033	47,246	52,345	10,953	37,943	3,185	3,587	456,247	3,482	6.33	3.20	1.98	0.92	16.5	8.3	1.34	.286	4.41	8.85
12	Pirates	3.99	11,947	.478	5,705	6,224	11,947	70,464	1,565	387	2,640	106752.2	106,488	47,341	52,839	10,195	39,031	3,277	3,951	457,882	3,606	5.94	3.29	1.81	0.86	15.4	8.5	1.36	.288	4.45	8.98
13	Angels	4.01	10,261	.495	5,080	5,178	10,261	64,397	1,307	347	2,390	91689.2	88,907	40,879	45,152	9,875	34,680	3,016	2,372	391,766	3,572	6.32	3.40	1.86	0.97	16.4	8.9	1.35	.282	4.43	8.73
14	Guardians	4.02	11,938	.509	6,066	5,860	11,938	74,247	1,973	426	2,555	106833.1	104,524	47,716	52,959	11,113	40,231	3,090	2,834	457,556	3,515	6.25	3.39	1.85	0.94	16.2	8.8	1.35	.284	4.46	8.81
15	Reds	4.04	11,953	.508	6,069	5,872	11,953	73,421	1,545	397	2,817	106942.1	104,873	47,990	52,788	11,754	39,290	3,263	3,535	457,578	3,463	6.18	3.31	1.87	0.99	16.0	8.6	1.35	.282	4.44	8.83
16	Cubs	4.06	11,956	.478	5,703	6,225	11,956	75,202	1,510	357	2,575	106895.2	105,271	48,187	53,638	11,263	39,868	3,126	3,748	458,931	3,532	6.33	3.36	1.89	0.95	16.4	8.7	1.36	.285	4.52	8.86
17	Orioles	4.10	11,939	.498	5,942	5,984	11,939	68,687	2,013	465	2,543	106723.1	104,793	48,571	53,137	11,516	40,051	2,892	2,450	456,137	3,294	5.79	3.38	1.71	0.97	15.1	8.8	1.36	.280	4.48	8.84
18	Red Sox	4.10	11,951	.529	6,320	5,625	11,951	74,979	1,851	396	2,702	106864.0	106,635	48,712	54,155	11,173	39,710	3,607	2,502	460,071	3,257	6.31	3.34	1.89	0.94	16.3	8.6	1.37	.289	4.56	8.98
19	Athletics	4.12	11,962	.486	5,809	6,139	11,962	68,335	1,697	355	2,608	106806.1	104,844	48,866	54,192	11,394	41,171	3,313	2,688	459,060	3,771	5.76	3.47	1.66	0.96	14.9	9.0	1.37	.279	4.57	8.83
20	Brewers	4.14	8,963	.489	4,385	4,574	8,963	55,419	929	208	2,181	79974.2	79,707	36,744	40,588	9,008	29,577	2,576	2,283	343,715	2,796	6.24	3.33	1.87	1.01	16.1	8.6	1.37	.286	4.57	8.97
21	Twins	4.18	11,957	.486	5,806	6,135	11,957	69,454	1,854	378	2,523	106600.0	108,502	49,518	54,729	11,811	36,975	3,005	2,252	457,299	3,522	5.86	3.12	1.88	1.00	15.2	8.1	1.36	.288	4.62	9.16
22	Tigers	4.20	11,964	.491	5,863	6,084	11,964	70,162	2,048	403	2,414	106676.1	106,506	49,799	54,998	12,093	39,807	3,328	2,950	458,910	3,733	5.92	3.36	1.76	1.02	15.3	8.7	1.37	.283	4.64	8.99
23	Rays	4.21	4,393	.490	2,151	2,242	4,393	33,097	106	41	1,125	39108.1	37,669	18,304	19,969	4,925	14,172	1,690	762	167,120	1,584	7.62	3.26	2.34	1.13	19.8	8.5	1.33	.289	4.60	8.67
24	Blue Jays	4.22	7,675	.500	3,833	3,839	7,675	50,400	651	162	1,799	68484.0	67,951	32,096	35,103	7,984	25,370	2,465	1,633	293,971	2,440	6.62	3.33	1.99	1.05	17.1	8.6	1.36	.289	4.61	8.93
25	Royals	4.25	8,955	.477	4,269	4,684	8,955	53,032	955	240	2,053	79703.1	80,978	37,661	41,301	8,452	29,274	2,546	1,895	343,199	3,099	5.99	3.31	1.81	0.95	15.5	8.5	1.38	.290	4.66	9.14