The Kansas City Royals have the lowest ERA by a team in their last 18 games, with an ERA of 2.62.

	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	Royals	2.62	18	.389	7	11	162	0	7	161.1	118	47	53	15	67	5	1	667	5	9.04	3.74	2.42	0.84	24.3	10.0	1.15	.246	2.96	6.58
2	Guardians	2.87	18	.444	8	10	177	0	4	160.0	131	51	65	16	70	10	5	673	10	9.96	3.94	2.53	0.90	26.3	10.4	1.26	.288	3.66	7.37
3	Rays	2.92	18	.500	9	9	173	0	7	154.0	119	50	52	12	36	8	1	618	7	10.11	2.10	4.81	0.70	28.0	5.8	1.01	.275	3.04	6.95
4	Cardinals	2.99	18	.611	11	7	145	0	7	159.1	146	53	61	14	38	4	3	645	2	8.19	2.15	3.82	0.79	22.5	5.9	1.15	.297	3.45	8.25
5	Red Sox	3.06	18	.444	8	10	142	0	3	162.0	143	55	62	14	59	8	1	680	3	7.89	3.28	2.41	0.78	20.9	8.7	1.25	.282	3.44	7.94
6	Tigers	3.19	18	.667	12	6	146	0	10	161.0	126	57	58	16	43	8	3	655	2	8.16	2.40	3.40	0.89	22.3	6.6	1.05	.249	3.24	7.04
7	Padres	3.23	18	.611	11	7	155	0	7	159.0	128	57	65	20	44	10	5	653	9	8.77	2.49	3.52	1.13	23.7	6.7	1.08	.255	3.68	7.25
8	White Sox	3.27	18	.444	8	10	169	0	3	162.1	140	59	67	16	76	5	2	683	9	9.37	4.21	2.22	0.89	24.7	11.1	1.33	.297	3.71	7.76
9	Giants	3.28	18	.500	9	9	162	0	5	161.2	147	59	62	9	62	5	2	693	10	9.02	3.45	2.61	0.50	23.4	8.9	1.29	.303	3.45	8.18
10	Mariners	3.38	18	.667	12	6	165	0	4	162.2	127	61	65	22	41	4	1	654	5	9.13	2.27	4.02	1.22	25.2	6.3	1.03	.249	3.60	7.03
11	Braves	3.53	18	.556	10	8	166	0	3	158.0	119	62	64	19	47	4	2	632	2	9.46	2.68	3.53	1.08	26.3	7.4	1.05	.253	3.65	6.78
12	Orioles	3.59	18	.444	8	10	153	0	2	160.1	133	64	70	21	57	3	0	659	6	8.59	3.20	2.68	1.18	23.2	8.6	1.19	.264	3.93	7.47
13	Yankees	3.69	18	.556	10	8	155	0	6	163.1	135	67	75	22	66	6	4	685	1	8.54	3.64	2.35	1.21	22.6	9.6	1.23	.259	4.13	7.44
14	Nationals	3.69	18	.389	7	11	141	0	3	158.1	133	65	71	16	46	4	1	643	4	8.01	2.61	3.07	0.91	21.9	7.2	1.13	.268	4.04	7.56
15	Astros	3.86	18	.611	11	7	175	0	8	161.0	152	69	74	21	50	6	0	682	6	9.78	2.80	3.50	1.17	25.7	7.3	1.25	.305	4.14	8.50
16	Blue Jays	3.88	18	.333	6	12	135	0	1	160.0	135	69	78	16	62	9	1	666	7	7.59	3.49	2.18	0.90	20.3	9.3	1.23	.268	4.39	7.59
17	Reds	3.92	18	.444	8	10	142	0	5	156.0	146	68	70	24	49	8	2	656	2	8.19	2.83	2.90	1.38	21.6	7.5	1.25	.282	4.04	8.42
18	Cubs	4.12	18	.500	9	9	128	0	6	159.1	156	73	75	29	55	2	1	669	4	7.23	3.11	2.33	1.64	19.1	8.2	1.32	.279	4.24	8.81
19	Pirates	4.15	18	.444	8	10	153	0	8	156.0	132	72	80	14	68	8	2	669	3	8.83	3.92	2.25	0.81	22.9	10.2	1.28	.277	4.62	7.62
20	Dodgers	4.16	18	.722	13	5	146	0	7	160.0	137	74	74	24	70	12	5	689	6	8.21	3.94	2.09	1.35	21.2	10.2	1.29	.259	4.16	7.71
21	Brewers	4.19	18	.500	9	9	172	0	5	161.0	146	75	83	18	59	10	4	692	6	9.61	3.30	2.92	1.01	24.9	8.5	1.27	.296	4.64	8.16
22	Athletics	4.55	18	.389	7	11	129	0	5	160.1	172	81	86	23	51	8	5	697	4	7.24	2.86	2.53	1.29	18.5	7.3	1.39	.307	4.83	9.65
23	Diamondbacks	4.72	18	.500	9	9	186	0	3	160.1	156	84	92	27	59	1	4	688	1	10.44	3.31	3.15	1.52	27.0	8.6	1.34	.311	5.16	8.76
24	Marlins	4.73	18	.444	8	10	128	0	6	160.0	161	84	97	27	58	10	5	699	6	7.20	3.26	2.21	1.52	18.3	8.3	1.37	.282	5.46	9.06
25	Twins	4.81	18	.333	6	12	204	0	3	166.2	188	89	99	26	66	7	5	744	6	11.02	3.56	3.09	1.40	27.4	8.9	1.52	.367	5.35	10.15