The Cleveland Guardians have the best ERA by a team in their last 18 games, with an ERA of 2.19.

	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	Guardians	2.19	18	.611	11	7	174	0	6	160.0	120	39	52	11	48	7	0	642	2	9.79	2.70	3.63	0.62	27.1	7.5	1.05	.271	2.93	6.75
2	Yankees	2.51	18	.667	12	6	179	0	7	165.0	124	46	54	14	57	7	2	664	5	9.76	3.11	3.14	0.76	27.0	8.6	1.10	.270	2.95	6.76
3	Padres	2.52	18	.667	12	6	166	0	7	164.0	115	46	51	17	48	6	1	649	5	9.11	2.63	3.46	0.93	25.6	7.4	0.99	.238	2.80	6.31
4	Tigers	2.54	18	.778	14	4	153	1	10	166.1	131	47	51	16	39	5	0	652	0	8.28	2.11	3.92	0.87	23.5	6.0	1.02	.262	2.76	7.09
5	Rays	2.62	18	.500	9	9	165	0	7	154.2	113	45	47	14	43	5	1	619	3	9.60	2.50	3.84	0.81	26.7	6.9	1.01	.253	2.73	6.58
6	Royals	2.64	18	.500	9	9	184	0	5	163.1	122	48	52	10	54	6	1	655	6	10.14	2.98	3.41	0.55	28.1	8.2	1.08	.279	2.87	6.72
7	Blue Jays	2.98	18	.389	7	11	133	0	1	160.0	123	53	64	13	61	9	3	655	7	7.48	3.43	2.18	0.73	20.3	9.3	1.15	.251	3.60	6.92
8	Cardinals	3.01	18	.556	10	8	157	0	7	161.1	142	54	60	15	48	6	3	661	4	8.76	2.68	3.27	0.84	23.8	7.3	1.18	.292	3.35	7.92
9	Braves	3.02	18	.556	10	8	177	0	2	161.0	141	54	64	18	46	8	3	669	5	9.89	2.57	3.85	1.01	26.5	6.9	1.16	.293	3.58	7.88
10	Giants	3.02	18	.556	10	8	152	0	6	160.2	142	54	59	11	54	5	2	675	10	8.51	3.02	2.81	0.62	22.5	8.0	1.22	.289	3.30	7.95
11	Mets	3.19	18	.667	12	6	168	0	4	160.2	121	57	60	12	46	9	1	643	9	9.41	2.58	3.65	0.67	26.1	7.2	1.04	.267	3.36	6.78
12	Red Sox	3.22	18	.500	9	9	140	0	4	162.0	148	58	67	16	62	5	2	686	3	7.78	3.44	2.26	0.89	20.4	9.0	1.30	.285	3.72	8.22
13	Mariners	3.25	18	.611	11	7	154	0	3	160.2	121	58	62	21	41	4	1	640	3	8.63	2.30	3.76	1.18	24.1	6.4	1.01	.238	3.47	6.78
14	White Sox	3.57	18	.389	7	11	169	0	2	161.1	147	64	71	21	67	8	0	678	8	9.43	3.74	2.52	1.17	24.9	9.9	1.33	.305	3.96	8.20
15	Nationals	4.06	18	.389	7	11	146	0	5	157.1	150	71	82	21	48	4	1	663	7	8.35	2.75	3.04	1.20	22.0	7.2	1.26	.291	4.69	8.58
16	Pirates	4.18	18	.444	8	10	153	0	7	157.0	134	73	81	15	61	8	2	669	3	8.77	3.50	2.51	0.86	22.9	9.1	1.24	.275	4.64	7.68
17	Reds	4.27	18	.444	8	10	160	0	5	156.0	150	74	77	27	44	13	1	661	2	9.23	2.54	3.64	1.56	24.2	6.7	1.24	.295	4.44	8.65
18	Brewers	4.27	18	.500	9	9	185	0	6	160.0	153	76	82	23	57	5	1	685	3	10.41	3.21	3.25	1.29	27.0	8.3	1.31	.313	4.61	8.61
19	Cubs	4.32	18	.500	9	9	137	0	5	158.1	160	76	79	30	60	1	1	678	3	7.79	3.41	2.28	1.71	20.2	8.8	1.39	.289	4.49	9.09
20	Orioles	4.32	18	.389	7	11	165	0	4	160.1	153	77	83	25	59	3	1	683	8	9.26	3.31	2.80	1.40	24.2	8.6	1.32	.297	4.66	8.59
21	Astros	4.39	18	.556	10	8	174	0	7	164.0	167	80	87	27	41	8	0	700	6	9.55	2.25	4.24	1.48	24.9	5.9	1.27	.311	4.77	9.16
22	Dodgers	4.42	18	.556	10	8	159	0	3	159.0	144	78	88	21	66	3	2	681	5	9.00	3.74	2.41	1.19	23.3	9.7	1.32	.285	4.98	8.15
23	Twins	4.45	18	.333	6	12	181	0	3	159.2	169	79	86	22	59	11	4	696	5	10.20	3.33	3.07	1.24	26.0	8.5	1.43	.348	4.85	9.53
24	Athletics	4.50	18	.389	7	11	145	0	4	166.0	189	83	92	22	53	8	5	733	8	7.86	2.87	2.74	1.19	19.8	7.2	1.46	.331	4.99	10.25
25	Rockies	4.56	18	.500	9	9	131	0	5	158.0	158	80	85	26	63	5	0	679	4	7.46	3.59	2.08	1.48	19.3	9.3	1.40	.291	4.84	9.00