Since July 1, 2025, the Boston Red Sox have the lowest ERA by a team, with an ERA of 3.35.

	TEAM	ERA	G	W%	W	L	SO	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	Red Sox	3.35	76	.618	47	29	634	1	23	677.2	605	252	281	79	231	36	5	2,850	33	8.42	3.07	2.74	1.05	22.2	8.1	1.23	.281	3.73	8.03
2	Guardians	3.37	80	.600	48	32	693	1	24	718.2	594	269	299	83	230	25	9	2,939	19	8.68	2.88	3.01	1.04	23.6	7.8	1.15	.268	3.74	7.44
3	Brewers	3.38	78	.641	50	28	714	0	23	694.2	565	261	293	79	243	37	7	2,872	13	9.25	3.15	2.94	1.02	24.9	8.5	1.16	.270	3.80	7.32
4	Padres	3.61	78	.577	45	33	694	0	21	691.0	563	277	289	95	258	32	14	2,863	15	9.04	3.36	2.69	1.24	24.2	9.0	1.19	.262	3.76	7.33
5	Dodgers	3.66	77	.519	40	37	761	0	18	682.0	549	277	296	69	265	27	16	2,842	34	10.04	3.50	2.87	0.91	26.8	9.3	1.19	.279	3.91	7.24
6	Rangers	3.68	77	.519	40	37	674	0	15	689.0	600	282	303	98	227	26	10	2,853	14	8.80	2.97	2.97	1.28	23.6	8.0	1.20	.275	3.96	7.84
7	Cubs	3.72	78	.551	43	35	636	0	25	685.1	580	283	300	102	174	24	2	2,776	13	8.35	2.29	3.66	1.34	22.9	6.3	1.10	.260	3.94	7.62
8	Pirates	3.80	76	.461	35	41	678	0	19	668.1	609	282	306	80	217	43	7	2,824	22	9.13	2.92	3.12	1.08	24.0	7.7	1.24	.293	4.12	8.20
9	Reds	3.81	77	.506	39	38	700	2	20	682.1	598	289	321	86	227	30	5	2,862	22	9.23	2.99	3.08	1.13	24.5	7.9	1.21	.281	4.23	7.89
10	Mariners	3.84	78	.590	46	32	737	0	23	699.1	620	298	325	87	194	38	8	2,907	27	9.48	2.50	3.80	1.12	25.4	6.7	1.16	.288	4.18	7.98
11	Phillies	3.88	77	.597	46	31	686	0	21	682.1	628	294	308	88	191	27	3	2,833	12	9.05	2.52	3.59	1.16	24.2	6.7	1.20	.293	4.06	8.28
12	Athletics	3.94	75	.547	41	34	637	0	16	667.2	573	292	317	97	243	31	12	2,787	10	8.59	3.28	2.62	1.31	22.9	8.7	1.22	.268	4.27	7.72
13	Royals	3.99	77	.558	43	34	582	0	22	680.2	632	302	321	85	231	22	8	2,853	20	7.70	3.05	2.52	1.12	20.4	8.1	1.27	.283	4.24	8.36
14	Rays	4.17	77	.390	30	47	725	0	16	671.0	600	311	345	95	241	31	5	2,827	21	9.72	3.23	3.01	1.27	25.6	8.5	1.25	.291	4.63	8.05
15	Blue Jays	4.17	78	.615	48	30	681	1	17	690.1	645	320	348	96	249	30	14	2,945	15	8.88	3.25	2.73	1.25	23.1	8.5	1.30	.291	4.54	8.41
16	Diamondbacks	4.22	78	.487	38	40	565	0	16	695.2	678	326	353	85	221	21	7	2,959	16	7.31	2.86	2.56	1.10	19.1	7.5	1.29	.287	4.57	8.77
17	Orioles	4.26	78	.487	38	40	661	0	19	694.1	657	329	360	101	250	23	15	2,949	30	8.57	3.24	2.64	1.31	22.4	8.5	1.31	.290	4.67	8.52
18	Astros	4.28	78	.474	37	41	681	0	19	698.1	652	332	361	110	259	26	4	2,976	19	8.78	3.34	2.63	1.42	22.9	8.7	1.30	.285	4.65	8.40
19	Marlins	4.30	80	.525	42	38	654	0	22	712.1	647	340	371	102	225	34	7	3,004	39	8.26	2.84	2.91	1.29	21.8	7.5	1.22	.274	4.69	8.17
20	Giants	4.30	77	.468	36	41	637	0	17	683.0	686	326	363	76	242	42	9	2,952	24	8.39	3.19	2.63	1.00	21.6	8.2	1.36	.312	4.78	9.04
21	Yankees	4.37	78	.590	46	32	672	0	20	694.0	635	337	371	95	282	29	7	2,985	28	8.71	3.66	2.38	1.23	22.5	9.4	1.32	.283	4.81	8.23
22	White Sox	4.44	78	.410	32	46	676	0	15	686.2	627	339	375	101	286	22	16	2,942	28	8.86	3.75	2.36	1.32	23.0	9.7	1.33	.283	4.92	8.22
23	Tigers	4.51	77	.442	34	43	655	0	16	680.0	655	341	366	98	243	23	7	2,902	28	8.67	3.22	2.70	1.30	22.6	8.4	1.32	.296	4.84	8.67
24	Mets	4.66	77	.455	35	42	649	0	17	678.0	670	351	386	85	242	48	1	2,944	28	8.62	3.21	2.68	1.13	22.0	8.2	1.35	.305	5.12	8.89
25	Cardinals	4.67	76	.408	31	45	582	0	21	666.1	705	346	389	97	225	24	7	2,900	23	7.86	3.04	2.59	1.31	20.1	7.8	1.40	.308	5.25	9.52