The Colorado Rockies have the highest ERA by a team this season, with an ERA of 5.99.

	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	Rockies	5.99	2025	158	.272	43	115	158	1,070	0	0	29	1375.1	1,645	915	1,001	245	535	70	18	6,222	59	7.00	3.50	2.00	1.60	17.2	8.6	1.59	.325	6.55	10.76
2	Nationals	5.34	2025	159	.409	65	94	159	1,218	0	0	36	1396.1	1,459	828	876	207	560	88	6	6,168	67	7.85	3.61	2.17	1.33	19.7	9.1	1.45	.306	5.65	9.40
3	Angels	4.86	2025	158	.449	71	87	158	1,243	0	0	37	1395.1	1,394	754	813	213	610	49	44	6,100	63	8.02	3.93	2.04	1.37	20.4	10.0	1.44	.296	5.24	8.99
4	Athletics	4.66	2025	158	.475	75	83	158	1,291	0	0	35	1401.2	1,348	726	790	217	552	79	25	6,066	28	8.29	3.54	2.34	1.39	21.3	9.1	1.36	.288	5.07	8.66
5	Marlins	4.66	2025	158	.487	77	81	158	1,254	0	0	39	1408.1	1,350	729	790	197	489	71	17	6,038	61	8.01	3.12	2.56	1.26	20.8	8.1	1.31	.286	5.05	8.63
6	Twins	4.65	2025	158	.430	68	90	158	1,327	1	0	28	1391.0	1,391	718	768	192	454	69	19	5,986	47	8.59	2.94	2.92	1.24	22.2	7.6	1.33	.304	4.97	9.00
7	Orioles	4.57	2025	158	.468	74	84	158	1,316	1	0	38	1399.2	1,396	711	766	209	510	47	19	6,022	63	8.46	3.28	2.58	1.34	21.9	8.5	1.36	.301	4.93	8.98
8	Diamondbacks	4.42	2025	158	.506	80	78	158	1,254	0	0	42	1411.0	1,362	693	753	187	485	56	20	6,024	31	8.00	3.09	2.59	1.19	20.8	8.1	1.31	.291	4.80	8.69
9	Braves	4.36	2025	159	.472	75	84	159	1,391	1	0	33	1411.0	1,318	683	721	193	520	69	20	5,999	39	8.87	3.32	2.68	1.23	23.2	8.7	1.30	.294	4.60	8.41
10	White Sox	4.25	2025	158	.367	58	100	158	1,242	0	0	24	1382.0	1,305	652	722	180	583	71	27	5,979	46	8.09	3.80	2.13	1.17	20.8	9.8	1.37	.288	4.70	8.50
11	Blue Jays	4.24	2025	158	.570	90	68	158	1,388	2	1	41	1402.0	1,287	661	713	206	502	71	25	5,943	31	8.91	3.22	2.76	1.32	23.4	8.4	1.28	.286	4.58	8.26
12	Cardinals	4.23	2025	159	.491	78	81	159	1,185	2	2	42	1408.0	1,406	662	733	161	453	47	16	6,013	50	7.57	2.90	2.62	1.03	19.7	7.5	1.32	.299	4.69	8.99
13	Mets	4.03	2025	158	.513	81	77	158	1,356	1	1	39	1398.0	1,311	626	700	145	547	76	6	6,014	61	8.73	3.52	2.48	0.93	22.5	9.1	1.33	.300	4.51	8.44
14	Dodgers	4.02	2025	158	.563	89	69	158	1,452	0	0	43	1405.0	1,224	628	677	174	553	63	31	5,931	69	9.30	3.54	2.63	1.11	24.5	9.3	1.26	.285	4.34	7.84
15	Tigers	3.97	2025	158	.538	85	73	158	1,337	1	1	38	1402.0	1,280	619	680	185	477	59	14	5,896	50	8.58	3.06	2.80	1.19	22.7	8.1	1.25	.285	4.37	8.22
16	Yankees	3.94	2025	158	.570	90	68	158	1,401	0	0	41	1403.2	1,219	615	675	169	544	54	12	5,936	53	8.98	3.49	2.58	1.08	23.6	9.2	1.26	.279	4.33	7.82
17	Reds	3.90	2025	158	.506	80	78	158	1,338	4	3	38	1400.0	1,240	606	671	188	481	63	13	5,893	45	8.60	3.09	2.78	1.21	22.7	8.2	1.23	.275	4.31	7.97
18	Astros	3.88	2025	158	.532	84	74	158	1,468	3	0	45	1407.0	1,228	607	653	194	495	58	7	5,897	37	9.39	3.17	2.97	1.24	24.9	8.4	1.22	.281	4.18	7.86
19	Giants	3.88	2025	159	.491	78	81	159	1,324	1	0	38	1406.2	1,336	606	678	139	501	68	18	5,993	50	8.47	3.21	2.64	0.89	22.1	8.4	1.31	.302	4.34	8.55
20	Mariners	3.87	2025	158	.563	89	69	158	1,383	0	0	43	1426.2	1,301	613	678	187	443	73	26	5,986	52	8.72	2.79	3.12	1.18	23.1	7.4	1.22	.286	4.28	8.21
21	Rays	3.85	2025	158	.487	77	81	158	1,376	1	0	35	1399.1	1,235	599	655	196	460	67	11	5,815	32	8.85	2.96	2.99	1.26	23.7	7.9	1.21	.280	4.21	7.94
22	Phillies	3.85	2025	158	.589	93	65	158	1,427	2	0	45	1403.1	1,317	600	641	173	424	51	9	5,883	36	9.15	2.72	3.37	1.11	24.3	7.2	1.24	.300	4.11	8.45
23	Cubs	3.81	2025	158	.563	89	69	158	1,221	0	0	43	1399.0	1,256	593	637	198	397	53	9	5,763	29	7.85	2.55	3.08	1.27	21.2	6.9	1.18	.272	4.10	8.08
24	Pirates	3.80	2025	158	.437	69	89	158	1,278	1	0	35	1396.2	1,238	589	635	150	463	73	18	5,846	44	8.24	2.98	2.76	0.97	21.9	7.9	1.22	.280	4.09	7.98
25	Royals	3.75	2025	158	.500	79	79	158	1,228	0	0	46	1401.0	1,280	584	625	167	468	44	17	5,854	51	7.89	3.01	2.62	1.07	21.0	8.0	1.25	.282	4.01	8.22