The Colorado Rockies had the worst ERA by a team when pitching at least 50 innings in a month this season, with an ERA of 7.13 in August 2025.

Interpreted as:

team most era in one month, min 50 ip this season

	TEAM	ERA	IP	MONTH	G	W%	W	L	SO	SHO	SV	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	7.13	252.1	August 2025	29	.379	11	18	204	0	5	320	200	204	54	104	18	4	1,172	6	7.28	3.71	1.96	1.93	17.4	8.9	1.68	.336	7.28	11.41
2	Athletics	6.88	247.1	May 2025	28	.250	7	21	213	0	4	283	189	195	56	110	16	5	1,135	6	7.75	4.00	1.94	2.04	18.8	9.7	1.59	.307	7.10	10.30
3	Marlins	6.36	219.1	April 2025	25	.360	9	16	196	0	5	251	155	162	34	109	9	2	1,011	11	8.04	4.47	1.80	1.40	19.4	10.8	1.64	.327	6.65	10.30
4	Nationals	6.31	244.0	August 2025	28	.321	9	19	227	0	5	281	171	178	53	105	11	0	1,108	5	8.37	3.87	2.16	1.95	20.5	9.5	1.58	.320	6.57	10.36
5	Rockies	6.17	207.0	July 2025	24	.375	9	15	154	0	6	266	142	149	36	85	12	4	954	7	6.70	3.70	1.81	1.57	16.1	8.9	1.70	.345	6.48	11.57
6	Twins	6.07	234.1	June 2025	27	.333	9	18	221	0	3	257	158	169	35	86	14	2	1,051	9	8.49	3.30	2.57	1.34	21.0	8.2	1.46	.319	6.49	9.87
7	Rockies	6.00	213.0	September 2025	25	.160	4	21	181	0	4	236	142	152	49	76	20	2	951	5	7.65	3.21	2.38	2.07	19.0	8.0	1.46	.299	6.42	9.97
8	Rockies	5.91	242.1	May 2025	28	.143	4	24	177	0	3	295	159	191	37	94	7	4	1,099	14	6.57	3.49	1.88	1.37	16.1	8.6	1.61	.329	7.09	10.96
9	Marlins	5.83	264.0	August 2025	30	.433	13	17	236	0	7	258	171	182	49	97	18	3	1,155	13	8.05	3.31	2.43	1.67	20.4	8.4	1.34	.277	6.20	8.80
10	Braves	5.80	223.1	July 2025	25	.320	8	17	220	0	4	229	144	151	37	100	13	7	994	9	8.87	4.03	2.20	1.49	22.1	10.1	1.47	.308	6.09	9.23
11	Angels	5.77	226.1	September 2025	26	.308	8	18	213	0	6	222	145	155	37	103	12	6	1,004	12	8.47	4.10	2.07	1.47	21.2	10.3	1.44	.290	6.16	8.83
12	Cubs	5.75	61.0	March 2025	7	.429	3	4	48	0	2	70	39	40	9	32	3	2	281	1	7.08	4.72	1.50	1.33	17.1	11.4	1.67	.323	5.90	10.33
13	Yankees	5.65	220.0	July 2025	25	.480	12	13	194	0	7	227	138	151	41	94	7	3	979	8	7.94	3.85	2.06	1.68	19.8	9.6	1.46	.289	6.18	9.29
14	Orioles	5.64	217.0	April 2025	25	.360	9	16	173	0	5	258	136	146	38	92	10	2	984	12	7.18	3.82	1.88	1.58	17.6	9.3	1.61	.328	6.06	10.70
15	Nationals	5.57	208.1	July 2025	24	.375	9	15	156	0	2	228	129	139	24	75	14	2	922	13	6.74	3.24	2.08	1.04	16.9	8.1	1.45	.312	6.00	9.85
16	Rockies	5.43	227.0	April 2025	26	.154	4	22	177	0	3	264	137	157	30	98	8	4	1,025	13	7.02	3.89	1.81	1.19	17.3	9.6	1.59	.329	6.22	10.47
17	Diamondbacks	5.33	246.2	May 2025	28	.393	11	17	226	0	8	250	146	156	37	96	15	7	1,082	3	8.25	3.50	2.35	1.35	20.9	8.9	1.40	.301	5.69	9.12
18	Rockies	5.30	232.2	June 2025	26	.385	10	16	176	0	7	253	137	152	40	87	7	1	1,023	14	6.81	3.37	2.02	1.55	17.2	8.5	1.46	.299	5.88	9.79
19	Nationals	5.22	231.0	September 2025	26	.500	13	13	206	0	11	238	134	148	35	104	12	2	1,027	13	8.03	4.05	1.98	1.36	20.1	10.1	1.48	.303	5.77	9.27
20	Angels	5.22	238.0	August 2025	27	.407	11	16	213	0	6	240	138	141	41	102	7	1	1,034	6	8.05	3.86	2.09	1.55	20.6	9.9	1.44	.297	5.33	9.08
21	Orioles	5.21	238.1	May 2025	27	.333	9	18	229	0	6	235	138	144	46	88	7	1	1,026	6	8.65	3.32	2.60	1.74	22.3	8.6	1.36	.288	5.44	8.87
22	Nationals	5.20	233.2	April 2025	27	.444	12	15	220	0	8	234	135	140	27	91	20	1	1,030	12	8.47	3.50	2.42	1.04	21.4	8.8	1.39	.308	5.39	9.01
23	Angels	5.19	215.0	April 2025	25	.360	9	16	175	0	5	225	124	133	31	104	7	5	951	10	7.33	4.35	1.68	1.30	18.4	10.9	1.53	.306	5.57	9.42
24	Twins	5.09	249.1	August 2025	28	.393	11	17	218	0	6	269	141	152	41	98	9	5	1,095	8	7.87	3.54	2.22	1.48	19.9	8.9	1.47	.313	5.49	9.71
25	Twins	5.02	229.2	September 2025	26	.308	8	18	235	0	2	219	128	137	32	79	13	4	988	10	9.21	3.10	2.97	1.25	23.8	8.0	1.30	.297	5.37	8.58