The Colorado Rockies have the highest ERA by a team this season, with an ERA of 5.53.

Interpreted as:

teams with worst era this regular season

	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	5.53	2025	89	.225	20	69	89	583	0	0	15	780.0	912	479	546	117	307	25	9	3,502	42	6.73	3.54	1.90	1.35	16.6	8.8	1.56	.322	6.30	10.52
2	Athletics	5.32	2025	91	.407	37	54	91	718	0	0	21	806.0	848	476	518	133	339	52	18	3,599	20	8.02	3.79	2.12	1.49	19.9	9.4	1.47	.303	5.78	9.47
3	Nationals	5.15	2025	89	.416	37	52	89	698	0	0	19	785.0	802	449	477	109	299	54	2	3,443	38	8.00	3.43	2.33	1.25	20.3	8.7	1.40	.304	5.47	9.19
4	Orioles	4.98	2025	88	.443	39	49	88	724	0	0	21	773.1	817	428	452	122	285	30	4	3,377	38	8.43	3.32	2.54	1.42	21.4	8.4	1.42	.314	5.26	9.51
5	Marlins	4.73	2025	87	.460	40	47	87	690	0	0	21	776.0	761	408	438	98	289	38	10	3,353	27	8.00	3.35	2.39	1.14	20.6	8.6	1.35	.296	5.08	8.83
6	Diamondbacks	4.72	2025	89	.494	44	45	89	768	0	0	26	794.1	772	417	457	116	286	38	13	3,414	15	8.70	3.24	2.69	1.31	22.5	8.4	1.33	.297	5.18	8.75
7	Angels	4.48	2025	88	.489	43	45	88	698	0	0	21	782.0	789	389	425	110	339	25	34	3,408	31	8.03	3.90	2.06	1.27	20.5	9.9	1.44	.304	4.89	9.08
8	Dodgers	4.32	2025	90	.622	56	34	90	794	0	0	28	804.0	746	386	418	114	313	41	18	3,429	38	8.89	3.50	2.54	1.28	23.2	9.1	1.32	.292	4.68	8.35
9	Blue Jays	4.22	2025	89	.573	51	38	89	793	0	0	27	795.2	716	373	398	117	294	46	16	3,361	18	8.97	3.33	2.70	1.32	23.6	8.7	1.27	.284	4.50	8.10
10	Twins	4.15	2025	89	.483	43	46	89	757	1	0	17	779.0	744	359	385	92	233	41	8	3,305	21	8.75	2.69	3.25	1.06	22.9	7.0	1.25	.299	4.45	8.60
11	White Sox	4.07	2025	89	.337	30	59	89	644	0	0	11	772.0	748	349	389	94	323	51	13	3,362	22	7.51	3.77	1.99	1.10	19.2	9.6	1.39	.291	4.53	8.72
12	Cardinals	4.03	2025	90	.533	48	42	90	654	2	2	22	798.2	763	358	388	83	246	24	10	3,363	33	7.37	2.77	2.66	0.94	19.4	7.3	1.26	.289	4.37	8.60
13	Red Sox	3.96	2025	90	.500	45	45	90	750	0	0	23	806.2	758	355	411	87	307	39	12	3,447	20	8.37	3.43	2.44	0.97	21.8	8.9	1.32	.296	4.59	8.46
14	Reds	3.96	2025	89	.517	46	43	89	713	2	1	22	786.2	700	346	380	109	273	37	8	3,318	24	8.16	3.12	2.61	1.25	21.5	8.2	1.24	.270	4.35	8.01
15	Guardians	3.95	2025	87	.460	40	47	87	726	1	0	23	767.0	728	337	364	90	320	31	11	3,294	26	8.52	3.75	2.27	1.06	22.0	9.7	1.37	.300	4.27	8.54
16	Yankees	3.84	2025	89	.539	48	41	89	802	0	0	23	785.2	656	335	363	95	299	30	6	3,291	27	9.19	3.43	2.68	1.09	24.4	9.1	1.22	.272	4.16	7.51
17	Cubs	3.82	2025	89	.596	53	36	89	665	0	0	21	795.2	739	338	366	107	245	30	7	3,312	17	7.52	2.77	2.71	1.21	20.1	7.4	1.24	.279	4.14	8.36
18	Mariners	3.81	2025	89	.528	47	42	89	734	0	0	22	808.1	739	342	380	105	277	39	18	3,410	27	8.17	3.08	2.65	1.17	21.5	8.1	1.26	.281	4.23	8.23
19	Brewers	3.80	2025	89	.551	49	40	89	752	0	0	23	789.1	707	333	362	95	303	32	14	3,344	20	8.57	3.45	2.48	1.08	22.5	9.1	1.28	.283	4.13	8.06
20	Braves	3.79	2025	88	.443	39	49	88	810	1	0	12	778.1	679	328	351	98	284	36	11	3,253	24	9.37	3.28	2.85	1.13	24.9	8.7	1.24	.287	4.06	7.85
21	Rays	3.78	2025	89	.539	48	41	89	740	1	0	20	795.1	709	334	357	118	245	38	6	3,285	14	8.37	2.77	3.02	1.34	22.5	7.5	1.20	.276	4.04	8.02
22	Phillies	3.73	2025	89	.584	52	37	89	820	0	0	26	794.0	744	329	357	90	262	25	6	3,346	24	9.29	2.97	3.13	1.02	24.5	7.8	1.27	.304	4.05	8.43
23	Padres	3.69	2025	88	.534	47	41	88	755	2	2	29	778.0	672	319	350	88	291	34	10	3,275	26	8.73	3.37	2.59	1.02	23.1	8.9	1.24	.277	4.05	7.77
24	Pirates	3.64	2025	90	.422	38	52	90	667	1	0	18	796.1	683	322	346	77	268	33	12	3,298	24	7.54	3.03	2.49	0.87	20.2	8.1	1.19	.269	3.91	7.72
25	Mets	3.51	2025	90	.578	52	38	90	778	1	1	26	799.0	708	312	352	77	333	33	5	3,400	35	8.76	3.75	2.34	0.87	22.9	9.8	1.30	.290	3.96	7.97