Andrew Saalfrank has the best ERA with an ERA worse than 0.00 this season, with an ERA of 0.69.

Interpreted as:

Who is leading the MLB 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	Andrew Saalfrank A. Saalfrank	0.69	2025	AZ	12	0	1	.000	0	9	0	0	0	13.0	10	1	2	0	5	0	2	1	53	2	6.23	3.46	1.80	0.00	17.0	9.4	1.15	.256	1.38	16	2.87	72	6.92	1.6
2	Tommy Nance T. Nance	0.77	2025	TOR	10	0	0		0	11	0	0	0	11.2	3	1	2	0	2	0	4	0	41	0	8.49	1.54	5.50	0.00	26.8	4.9	0.43	.107	1.54	19	1.73	42	2.31	3.2
3	Justin Lawrence J. Lawrence	0.79	2025	PIT	11	1	0	1.000	0	15	0	0	0	11.1	5	1	1	0	6	2	3	1	44	1	11.91	4.76	2.50	0.00	34.1	13.6	0.97	.238	0.79	19	2.57	63	3.97	1.9
4	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	3.85	95	4.82	0.2
5	Cole Winn C. Winn	0.99	2025	TEX	21	0	1	.000	0	20	0	0	0	27.1	14	3	4	1	12	0	10	2	105	1	6.59	3.95	1.67	0.33	19.0	11.4	0.95	.181	1.32	24	3.43	81	4.61	2.4
6	Danny Coulombe D. Coulombe	1.01	2025	TOT	45	2	0	1.000	1	37	0	0	2	35.2	23	4	4	0	13	0	8	0	141	1	9.34	3.28	2.85	0.00	26.2	9.2	1.01	.253	1.01	25	2.12	51	5.80	8.1
7	Ian Seymour I. Seymour	1.06	2025	TBR	10	1	0	1.000	0	18	0	0	0	17.0	10	2	3	0	5	1	6	1	67	0	9.53	2.65	3.60	0.00	26.9	7.5	0.88	.233	1.59	27	2.04	51	5.29	3.9
8	Erik Sabrowski E. Sabrowski	1.15	2025	CLE	15	0	0		0	23	0	0	0	15.2	8	2	4	1	8	1	1	0	60	0	13.21	4.60	2.88	0.57	38.3	13.3	1.02	.259	2.30	29	2.72	66	4.60	2.5
9	Matt Brash M. Brash	1.16	2025	SEA	35	1	0	1.000	0	35	0	0	3	31.0	22	4	6	1	12	2	4	2	127	0	10.16	3.48	2.92	0.29	27.6	9.4	1.10	.273	1.74	30	2.62	65	6.39	4.9
10	Aroldis Chapman A. Chapman	1.18	2025	BOS	50	3	2	.600	0	65	0	0	21	45.2	21	6	7	3	13	0	28	0	171	3	12.81	2.56	5.00	0.59	38.0	7.6	0.74	.200	1.38	28	1.96	47	4.14	11.3
11	Gavin Hollowell G. Hollowell	1.23	2025	CHC	6	0	0		0	8	0	0	0	7.1	6	1	1	1	3	0	3	0	30	0	9.82	3.68	2.67	1.23	26.7	10.0	1.23	.278	1.23	30	3.92	98	7.36	0.1
12	Shawn Dubin S. Dubin	1.33	2025	HOU	18	2	0	1.000	0	18	0	0	0	20.1	16	3	3	2	7	1	1	0	81	0	7.97	3.10	2.57	0.89	22.2	8.6	1.13	.264	1.33	33	3.79	92	7.08	0.7
13	Connor Seabold C. Seabold	1.35	2025	TBR	3	0	0		0	5	0	0	0	6.2	7	1	1	0	3	0	3	0	29	0	6.75	4.05	1.67	0.00	17.2	10.3	1.50	.333	1.35	35	2.95	73	9.45	0.8
14	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	4.00	101	4.05	0
15	Andrés Muñoz A. Muñoz	1.37	2025	SEA	47	3	1	.750	0	59	0	0	27	46.0	23	7	11	2	22	2	32	3	184	6	11.54	4.30	2.68	0.39	32.1	12.0	0.98	.212	2.15	36	2.66	67	4.50	7
16	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	4.33	105	4.15	-0.3
17	Trevor Rogers T. Rogers	1.44	2025	BAL	10	5	2	.714	10	54	1	0	0	62.1	37	10	10	2	15	1	0	0	237	0	7.80	2.17	3.60	0.29	22.8	6.3	0.83	.212	1.44	36	2.55	63	5.34	10.7
18	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	3.93	100	7.20	-0.1
19	Randy Rodríguez R. Rodríguez	1.51	2025	SFG	47	3	3	.500	0	64	0	0	3	47.2	30	8	10	3	11	3	12	0	184	2	12.08	2.08	5.82	0.57	34.8	6.0	0.86	.262	1.89	37	2.11	54	5.66	9.9
20	Hurston Waldrep H. Waldrep	1.54	2025	ATL	2	2	0	1.000	1	10	0	0	0	11.2	7	2	2	0	3	0	0	0	44	0	7.71	2.31	3.33	0.00	22.7	6.8	0.86	.226	1.54	36	2.16	54	5.40	2.4
21	Edwin Díaz E. Díaz	1.60	2025	NYM	45	5	2	.714	0	67	0	0	23	45.0	25	8	10	3	17	7	34	0	179	6	13.40	3.40	3.94	0.60	37.4	9.5	0.93	.259	2.00	40	2.59	64	5.00	7.3
22	Yerry De Los Santos Y. De Los Santos	1.63	2025	NYY	19	0	0		0	21	0	0	0	27.2	26	5	5	0	14	0	3	0	122	1	6.83	4.55	1.50	0.00	17.2	11.5	1.45	.299	1.63	40	3.10	72	8.46	3.6
23	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	41	1.92	47	4.91	2.6
24	Bryan Abreu B. Abreu	1.67	2025	HOU	53	3	3	.500	0	79	0	0	0	54.0	31	10	10	3	25	3	7	0	219	3	13.17	4.17	3.16	0.50	36.1	11.4	1.04	.257	1.67	42	2.45	60	5.17	10.1
25	Kevin Herget K. Herget	1.69	2025	TOT	3	0	0		0	1	0	0	0	5.1	6	1	2	0	2	0	2	0	25	2	1.69	3.38	0.50	0.00	4.0	8.0	1.50	.273	3.38	42	3.85	96	10.13	0.1