The Los Angeles Dodgers had the best ERA by a team in 2019, with an ERA of 3.37.

	TEAM	ERA	SEASON	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	3.37	2019	162	.654	106	56	162	1,519	3	1	44	1445.2	1,201	541	613	185	392	66	24	5,913	40	9.46	2.44	3.88	1.15	25.7	6.6	1.10	.271	3.82	7.48
2	Rays	3.65	2019	162	.593	96	66	162	1,621	0	0	46	1474.1	1,274	598	656	181	453	60	27	6,086	59	9.90	2.77	3.58	1.10	26.6	7.4	1.17	.290	4.00	7.78
3	Astros	3.66	2019	162	.660	107	55	162	1,671	2	1	47	1462.1	1,205	595	640	230	448	41	0	5,995	41	10.28	2.76	3.73	1.42	27.9	7.5	1.13	.270	3.94	7.42
4	Indians	3.76	2019	162	.574	93	69	162	1,508	6	5	42	1437.2	1,308	601	657	207	450	62	19	6,008	42	9.44	2.82	3.35	1.30	25.1	7.5	1.22	.291	4.11	8.19
5	Cardinals	3.80	2019	162	.562	91	71	162	1,399	1	1	52	1444.0	1,284	609	662	191	545	69	41	6,068	46	8.72	3.40	2.57	1.19	23.1	9.0	1.27	.283	4.13	8.00
6	Athletics	3.97	2019	162	.599	97	65	162	1,299	1	1	45	1465.0	1,342	646	680	201	477	66	19	6,153	74	7.98	2.93	2.72	1.23	21.1	7.8	1.24	.278	4.18	8.24
7	Cubs	4.10	2019	162	.519	84	78	162	1,444	1	1	38	1442.0	1,376	657	717	195	534	80	16	6,190	60	9.01	3.33	2.70	1.22	23.3	8.6	1.32	.300	4.48	8.59
8	Reds	4.18	2019	162	.463	75	87	162	1,552	0	0	46	1438.0	1,270	668	711	214	536	58	31	6,057	35	9.71	3.35	2.90	1.34	25.6	8.8	1.26	.286	4.45	7.95
9	Twins	4.18	2019	162	.623	101	61	162	1,463	1	0	50	1463.1	1,456	680	754	198	452	61	10	6,246	71	9.00	2.78	3.24	1.22	23.4	7.2	1.30	.309	4.64	8.95
10	Braves	4.19	2019	162	.599	97	65	162	1,393	1	0	44	1450.2	1,421	675	743	203	548	69	33	6,243	70	8.64	3.40	2.54	1.26	22.3	8.8	1.36	.302	4.61	8.82
11	Mets	4.24	2019	162	.531	86	76	162	1,520	3	3	38	1461.0	1,405	688	737	204	500	60	40	6,232	47	9.36	3.08	3.04	1.26	24.4	8.0	1.30	.304	4.54	8.66
12	Diamondbacks	4.25	2019	162	.525	85	77	162	1,427	0	0	45	1465.0	1,400	691	743	220	516	62	38	6,230	49	8.77	3.17	2.77	1.35	22.9	8.3	1.31	.295	4.56	8.60
13	Nationals	4.27	2019	162	.574	93	69	162	1,511	1	1	40	1439.1	1,340	683	724	202	517	61	41	6,134	53	9.45	3.23	2.92	1.26	24.6	8.4	1.29	.296	4.53	8.38
14	Yankees	4.31	2019	162	.636	103	59	162	1,534	1	1	50	1443.0	1,374	691	739	248	507	44	12	6,133	55	9.57	3.16	3.03	1.55	25.0	8.3	1.30	.296	4.61	8.57
15	Giants	4.38	2019	162	.475	77	85	162	1,368	1	0	41	1469.0	1,395	715	773	227	519	65	26	6,256	53	8.38	3.18	2.64	1.39	21.9	8.3	1.30	.286	4.74	8.55
16	Brewers	4.40	2019	162	.549	89	73	162	1,497	0	0	50	1459.1	1,364	713	766	225	570	60	28	6,251	41	9.23	3.52	2.63	1.39	23.9	9.1	1.33	.292	4.72	8.41
17	Phillies	4.53	2019	162	.500	81	81	162	1,392	3	1	36	1453.2	1,452	731	794	258	546	71	38	6,274	45	8.62	3.38	2.55	1.60	22.2	8.7	1.37	.298	4.92	8.99
18	Padres	4.60	2019	162	.432	70	92	162	1,475	0	0	47	1432.0	1,394	732	789	215	463	68	19	6,160	60	9.27	2.91	3.19	1.35	23.9	7.5	1.30	.299	4.96	8.76
19	Red Sox	4.70	2019	162	.519	84	78	162	1,633	1	1	33	1471.0	1,423	768	828	215	605	76	22	6,399	81	9.99	3.70	2.70	1.32	25.5	9.5	1.38	.312	5.07	8.71
20	Marlins	4.74	2019	162	.352	57	105	162	1,378	2	2	27	1444.1	1,340	760	808	236	615	90	52	6,247	71	8.59	3.83	2.24	1.47	22.1	9.8	1.35	.281	5.03	8.35
21	Blue Jays	4.79	2019	162	.414	67	95	162	1,332	1	0	33	1440.1	1,450	767	828	228	604	69	25	6,313	70	8.32	3.77	2.21	1.42	21.1	9.6	1.43	.300	5.17	9.06
22	White Sox	4.90	2019	161	.447	72	89	161	1,312	6	2	33	1412.2	1,438	769	832	238	582	51	30	6,159	71	8.36	3.71	2.25	1.52	21.3	9.4	1.43	.302	5.30	9.16
23	Mariners	4.99	2019	162	.420	68	94	162	1,239	3	2	34	1439.1	1,484	798	893	260	505	51	25	6,268	75	7.75	3.16	2.45	1.63	19.8	8.1	1.38	.291	5.58	9.28
24	Rangers	5.06	2019	162	.481	78	84	162	1,379	4	1	33	1438.0	1,515	808	878	241	583	70	11	6,354	68	8.63	3.65	2.37	1.51	21.7	9.2	1.46	.312	5.50	9.48
25	Angels	5.12	2019	162	.444	72	90	162	1,404	0	0	32	1442.2	1,417	820	868	267	576	82	11	6,289	98	8.76	3.59	2.44	1.67	22.3	9.2	1.38	.290	5.41	8.84