Since 1969, the Los Angeles Dodgers have the best ERA by a team, with an ERA of 3.49.

	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	3.49	9,006	.550	4,949	4,054	9,006	63,294	1,006	385	2,217	80955.0	73,808	31,375	34,982	7,462	27,367	2,286	2,560	339,175	2,641	7.04	3.04	2.31	0.83	18.7	8.1	1.25	.278	3.89	8.21
2	Mets	3.78	8,998	.501	4,505	4,490	8,998	61,701	823	275	2,142	80562.2	76,836	33,864	37,488	7,905	28,791	2,470	2,862	342,200	2,440	6.89	3.22	2.14	0.88	18.0	8.4	1.31	.286	4.19	8.58
3	Astros	3.82	9,006	.513	4,622	4,382	9,006	62,859	890	288	2,115	80694.2	76,623	34,233	37,804	7,923	29,190	2,526	2,312	342,812	2,962	7.01	3.26	2.15	0.88	18.3	8.5	1.31	.286	4.22	8.55
4	Cardinals	3.82	9,001	.526	4,727	4,266	9,001	55,042	878	268	2,218	80644.1	78,445	34,230	37,908	7,525	28,344	2,503	2,778	342,554	2,623	6.14	3.16	1.94	0.84	16.1	8.3	1.32	.285	4.23	8.75
5	Braves	3.85	8,993	.521	4,683	4,304	8,993	59,222	818	226	2,204	80436.1	77,772	34,385	38,201	7,805	29,088	2,214	3,011	342,620	2,736	6.63	3.25	2.04	0.87	17.3	8.5	1.33	.286	4.27	8.70
6	Giants	3.88	9,006	.509	4,580	4,425	9,006	57,900	799	241	2,209	80709.0	78,043	34,759	38,665	7,783	29,353	2,378	3,001	344,176	2,775	6.46	3.27	1.97	0.87	16.8	8.5	1.33	.285	4.31	8.70
7	Yankees	3.93	8,994	.563	5,057	3,932	8,994	59,209	991	239	2,388	80374.0	77,892	35,058	38,523	8,526	27,656	2,433	1,761	341,187	2,830	6.63	3.10	2.14	0.95	17.4	8.1	1.31	.285	4.31	8.72
8	Padres	3.96	9,008	.468	4,217	4,789	9,008	59,059	668	203	2,177	80555.1	78,147	35,417	39,338	8,376	29,731	2,364	3,093	344,265	2,724	6.60	3.32	1.99	0.94	17.2	8.6	1.34	.285	4.40	8.73
9	Nationals	3.97	9,000	.481	4,331	4,665	9,000	58,430	790	251	2,187	80386.1	78,089	35,494	39,348	8,275	29,542	2,676	2,722	343,729	2,756	6.54	3.31	1.98	0.93	17.0	8.6	1.34	.285	4.41	8.74
10	Pirates	4.02	8,994	.484	4,348	4,640	8,994	56,822	781	222	2,173	80413.1	79,713	35,888	39,764	7,860	29,657	2,764	2,983	345,049	2,891	6.36	3.32	1.92	0.88	16.5	8.6	1.36	.290	4.45	8.92
11	Athletics	4.02	9,001	.512	4,608	4,393	9,001	55,034	982	234	2,162	80507.1	78,196	35,988	39,778	8,613	30,063	2,572	2,044	344,297	2,930	6.15	3.36	1.83	0.96	16.0	8.7	1.34	.281	4.45	8.74
12	Cubs	4.05	8,999	.491	4,412	4,578	8,999	61,209	742	219	2,148	80486.1	78,890	36,216	40,012	8,568	29,871	2,560	2,952	345,122	2,783	6.84	3.34	2.05	0.96	17.7	8.7	1.35	.289	4.47	8.82
13	Phillies	4.06	9,006	.500	4,505	4,497	9,006	60,351	896	251	2,066	80481.1	79,073	36,295	39,906	8,513	29,314	2,583	2,780	344,467	2,813	6.75	3.28	2.06	0.95	17.5	8.5	1.35	.290	4.46	8.84
14	Reds	4.09	9,008	.508	4,576	4,425	9,008	58,675	700	217	2,285	80577.0	78,732	36,592	40,031	9,131	30,055	2,562	2,865	345,114	2,742	6.55	3.36	1.95	1.02	17.0	8.7	1.35	.284	4.47	8.79
15	Angels	4.10	9,007	.497	4,479	4,526	9,007	57,579	1,081	269	2,097	80462.2	78,760	36,624	40,264	8,937	30,281	2,711	1,985	344,309	3,176	6.44	3.39	1.90	1.00	16.7	8.8	1.36	.285	4.50	8.81
16	Red Sox	4.12	8,999	.539	4,851	4,147	8,999	60,000	1,059	245	2,157	80468.0	80,547	36,862	40,737	8,685	28,688	2,984	1,942	345,559	2,524	6.71	3.21	2.09	0.97	17.4	8.3	1.36	.293	4.56	9.01
17	Brewers	4.13	9,004	.489	4,405	4,595	9,004	55,802	929	208	2,191	80339.1	80,017	36,884	40,753	9,045	29,711	2,598	2,289	345,244	2,803	6.25	3.33	1.88	1.01	16.2	8.6	1.37	.286	4.57	8.96
18	Guardians	4.18	8,983	.497	4,466	4,515	8,983	58,121	948	217	2,058	80229.1	80,207	37,235	41,030	8,724	29,602	2,548	2,222	344,576	2,820	6.52	3.32	1.96	0.98	16.9	8.6	1.37	.291	4.60	9.00
19	White Sox	4.20	8,997	.486	4,365	4,623	8,997	56,494	929	213	2,152	80102.1	79,579	37,343	41,264	8,839	30,302	2,664	1,915	344,507	2,935	6.35	3.40	1.86	0.99	16.4	8.8	1.37	.287	4.64	8.94
20	Rays	4.21	4,432	.489	2,168	2,264	4,432	33,474	106	41	1,133	39452.0	37,975	18,458	20,143	4,973	14,295	1,705	764	168,564	1,598	7.64	3.26	2.34	1.13	19.9	8.5	1.32	.289	4.60	8.66
21	Blue Jays	4.22	7,714	.500	3,855	3,856	7,714	50,738	652	163	1,806	68831.1	68,284	32,253	35,274	8,027	25,497	2,476	1,635	295,453	2,449	6.63	3.33	1.99	1.05	17.2	8.6	1.36	.289	4.61	8.93
22	Orioles	4.22	8,986	.504	4,527	4,455	8,986	54,049	1,200	281	2,012	80193.1	79,910	37,613	40,775	9,399	29,501	2,307	1,920	343,248	2,618	6.07	3.31	1.83	1.05	15.7	8.6	1.36	.284	4.58	8.97
23	Royals	4.25	8,995	.477	4,290	4,703	8,995	53,343	955	240	2,065	80054.0	81,310	37,818	41,467	8,499	29,383	2,559	1,896	344,658	3,115	6.00	3.30	1.82	0.96	15.5	8.5	1.38	.290	4.66	9.14
24	Twins	4.28	8,999	.491	4,414	4,582	8,999	55,063	910	201	2,094	80211.2	82,598	38,128	41,725	9,373	26,924	2,409	1,725	343,900	2,797	6.18	3.02	2.05	1.05	16.0	7.8	1.37	.293	4.68	9.27
25	Mariners	4.28	7,713	.478	3,689	4,022	7,713	50,972	587	152	1,854	68758.0	68,486	32,727	35,871	8,178	25,528	2,450	1,806	295,508	2,577	6.67	3.34	2.00	1.07	17.2	8.6	1.37	.289	4.70	8.96