Justin Lawrence had the lowest ERA with an ERA worse than 0.00 this season, with an ERA of 0.51.

Interpreted as:

MLB leaders in era this regular season

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Justin Lawrence J. Lawrence	0.51	2025	PIT	17	1	0	1.000	0	23	0	0	0	17.2	9	1	1	0	8	2	3	2	69	2	11.72	4.08	2.88	0.00	33.3	11.6	0.96	.250	0.51	12	2.22	54	4.58	3.7
2	Ron Marinaccio R. Marinaccio	0.84	2025	SDP	7	0	0		0	12	0	0	0	10.2	6	1	1	0	4	0	3	0	42	0	10.13	3.38	3.00	0.00	28.6	9.5	0.94	.231	0.84	21	2.00	49	5.06	2.5
3	Austin Warren A. Warren	0.96	2025	NYM	5	1	0	1.000	0	9	0	0	0	9.1	5	1	1	1	4	0	1	0	34	0	8.68	3.86	2.25	0.96	26.5	11.8	0.96	.200	0.96	24	3.88	95	4.82	0.2
4	Aroldis Chapman A. Chapman	1.17	2025	BOS	67	5	3	.625	0	85	0	0	32	61.1	28	8	9	3	15	0	43	0	228	6	12.47	2.20	5.67	0.44	37.3	6.6	0.70	.200	1.32	27	1.73	41	4.11	16.8
5	Cody Laweryson C. Laweryson	1.17	2025	MIN	5	0	1	.000	0	7	0	0	0	7.2	4	1	2	0	0	0	2	0	26	0	8.22	0.00		0.00	26.9	0.0	0.52	.211	2.35	29	1.30	31	4.70	2.4
6	Bradgley Rodriguez B. Rodriguez	1.17	2025	SDP	7	1	0	1.000	0	9	0	0	0	7.2	4	1	1	0	3	3	3	1	31	0	10.57	3.52	3.00	0.00	29.0	9.7	0.91	.250	1.17	29	3.13	76	4.70	0.8
7	Andrew Saalfrank A. Saalfrank	1.24	2025	AZ	28	2	1	.667	0	19	0	0	3	29.0	19	4	5	1	10	0	10	1	113	2	5.90	3.10	1.90	0.31	16.8	8.8	1.00	.217	1.55	29	3.30	82	5.90	2.3
8	Luinder Avila L. Avila	1.29	2025	KCR	13	1	1	.500	0	16	0	0	0	14.0	7	2	2	0	6	0	9	0	56	0	10.29	3.86	2.67	0.00	28.6	10.7	0.93	.206	1.29	30	2.13	51	4.50	3.2
9	Cristian Mena C. Mena	1.35	2025	AZ	3	1	0	1.000	0	8	0	0	0	6.2	3	1	1	1	3	0	0	0	26	1	10.80	4.05	2.67	1.35	30.8	11.5	0.90	.143	1.35	32	4.03	101	4.05	0
10	Dylan Smith D. Smith	1.38	2025	DET	7	1	0	1.000	0	4	0	0	0	13.0	6	2	2	0	5	3	5	0	48	0	2.77	3.46	0.80	0.00	8.3	10.4	0.85	.167	1.38	34	4.36	106	4.15	-0.3
11	Erik Miller E. Miller	1.50	2025	SFG	36	4	1	.800	0	22	0	0	0	30.0	24	5	5	0	20	3	2	4	128	1	6.60	6.00	1.10	0.00	17.2	15.6	1.47	.289	1.50	37	3.96	100	7.20	0
12	Cole Winn C. Winn	1.51	2025	TEX	33	0	1	.000	0	35	0	0	0	41.2	23	7	8	3	17	4	10	2	162	1	7.56	3.67	2.06	0.65	21.6	10.5	0.96	.194	1.73	37	3.90	92	4.97	1.7
13	Jayden Murray J. Murray	1.54	2025	HOU	9	0	0		1	8	0	0	0	11.2	10	2	2	0	3	0	2	0	47	0	6.17	2.31	2.67	0.00	17.0	6.4	1.11	.278	1.54	38	2.53	61	7.71	2.1
14	Bailey Horn B. Horn	1.59	2025	DET	10	0	1	.000	0	10	0	0	0	11.1	11	2	2	1	7	0	2	0	50	1	7.94	5.56	1.43	0.79	20.0	14.0	1.59	.313	1.59	39	4.36	106	8.74	-0.3
15	Edwin Díaz E. Díaz	1.63	2025	NYM	62	6	3	.667	0	98	0	0	28	66.1	37	12	14	4	21	8	48	0	258	7	13.30	2.85	4.67	0.54	38.0	8.1	0.87	.260	1.90	40	2.27	55	5.02	13.5
16	A.J. Minter	1.64	2025	NYM	13	0	0		0	14	0	0	0	11.0	6	2	2	0	5	0	1	0	44	0	11.45	4.09	2.80	0.00	31.8	11.4	1.00	.240	1.64	40	1.95	48	4.91	2.6
17	Chase Silseth C. Silseth	1.64	2025	LAA	10	0	0		0	13	0	0	0	11.0	10	2	2	1	6	1	0	1	49	1	10.64	4.91	2.17	0.82	26.5	12.2	1.45	.321	1.64	39	3.86	90	8.18	0.5
18	Abner Uribe A. Uribe	1.67	2025	MIL	75	3	2	.600	0	90	0	0	7	75.1	51	14	18	4	27	6	15	2	298	5	10.75	3.23	3.33	0.48	30.2	9.1	1.04	.275	2.15	40	2.74	66	6.09	11.9
19	Darren McCaughan D. McCaughan	1.69	2025	MIN	3	0	0		0	6	0	0	0	5.1	5	1	1	0	1	0	1	0	23	0	10.13	1.69	6.00	0.00	26.1	4.3	1.13	.313	1.69	41	1.44	35	8.44	1.6
20	Randy Dobnak R. Dobnak	1.69	2025	MIN	1	0	0		0	1	0	0	0	5.1	2	1	1	1	2	0	1	0	19	0	1.69	3.38	0.50	1.69	5.3	10.5	0.75	.067	1.69	41	6.32	151	3.38	-1.3
21	AJ Blubaugh	1.69	2025	HOU	11	3	1	.750	3	35	0	0	0	32.0	17	6	11	6	11	0	2	0	124	0	9.84	3.09	3.18	1.69	28.2	8.9	0.88	.153	3.09	42	4.41	107	4.78	-1
22	Kade Strowd K. Strowd	1.71	2025	BAL	25	0	1	.000	0	24	0	0	0	26.1	16	5	6	1	13	1	6	0	105	2	8.20	4.44	1.85	0.34	22.9	12.4	1.10	.227	2.05	43	3.39	83	5.47	2
23	Nathan Eovaldi N. Eovaldi	1.73	2025	TEX	22	11	3	.786	22	129	1	1	0	130.0	90	25	28	10	21	7	0	1	496	6	8.93	1.45	6.14	0.69	26.0	4.2	0.85	.243	1.94	42	2.79	66	6.23	20.8
24	Andrés Muñoz A. Muñoz	1.73	2025	SEA	64	3	3	.500	0	83	0	0	38	62.1	36	12	18	2	28	4	47	3	254	7	11.98	4.04	2.96	0.29	32.7	11.0	1.03	.248	2.60	45	2.42	60	5.20	11.3
25	Logan Henderson L. Henderson	1.78	2025	MIL	5	3	0	1.000	5	33	0	0	0	25.1	17	5	5	3	8	0	0	0	99	0	11.72	2.84	4.13	1.07	33.3	8.1	0.99	.255	1.78	42	3.01	72	6.04	3.3