Paul Skenes had the lowest ERA- this season, with an ERA- of 46.

Interpreted as:

era- with a minimum of 1 IP per team game leaders this regular season

	NAME	ERA-	SEASON	TM	G	W	L	W%	GS	ERA	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	FIP	FIP-	H/9	PRAA
1	Paul Skenes P. Skenes	46	2025	PIT	32	10	10	.500	32	1.97	216	1	0	0	187.2	136	41	45	11	42	6	0	0	733	2	10.36	2.01	5.14	0.53	29.5	5.7	0.95	.273	2.16	2.36	57	6.52	37
2	Tarik Skubal T. Skubal	55	2025	DET	31	13	6	.684	31	2.21	241	1	1	0	195.1	141	48	55	18	33	5	0	0	748	3	11.10	1.52	7.30	0.83	32.2	4.4	0.89	.273	2.53	2.44	59	6.50	36.9
3	Cristopher Sánchez C. Sánchez	59	2025	PHI	32	13	5	.722	32	2.50	212	1	0	0	202.0	171	56	58	12	44	6	0	0	807	6	9.45	1.96	4.82	0.53	26.3	5.5	1.06	.298	2.58	2.54	60	7.62	36.9
4	Garrett Crochet G. Crochet	60	2025	BOS	32	18	5	.783	32	2.59	255	1	1	0	205.1	165	59	62	24	46	3	0	0	814	7	11.18	2.02	5.54	1.05	31.3	5.7	1.03	.290	2.72	2.88	68	7.23	30.2
5	Hunter Brown H. Brown	60	2025	HOU	31	12	9	.571	31	2.43	206	1	0	0	185.1	133	50	55	17	57	7	0	1	729	0	10.00	2.77	3.61	0.83	28.3	7.8	1.03	.262	2.67	3.13	76	6.46	20.6
6	Yoshinobu Yamamoto Y. Yamamoto	60	2025	LAD	30	12	8	.600	30	2.49	201	0	0	0	173.2	113	48	53	14	59	3	0	0	684	5	10.42	3.06	3.41	0.73	29.4	8.6	0.99	.243	2.75	2.93	70	5.86	24.4
7	Freddy Peralta F. Peralta	64	2025	MIL	33	17	6	.739	33	2.70	204	0	0	0	176.2	124	53	54	21	66	9	0	0	723	4	10.39	3.36	3.09	1.07	28.2	9.1	1.08	.243	2.75	3.64	87	6.32	10.5
8	Andrew Abbott A. Abbott	64	2025	CIN	29	10	7	.588	29	2.87	149	1	1	0	166.1	148	53	60	19	43	3	0	0	684	4	8.06	2.33	3.47	1.03	21.8	6.3	1.15	.274	3.25	3.65	83	8.01	13.1
9	Max Fried M. Fried	70	2025	NYY	32	19	5	.792	32	2.86	189	0	0	0	195.1	164	62	73	14	51	10	0	0	801	8	8.71	2.35	3.71	0.65	23.6	6.4	1.10	.279	3.36	3.06	71	7.56	26.2
10	Nick Pivetta N. Pivetta	71	2025	SDP	31	13	5	.722	31	2.87	190	0	0	0	181.2	129	58	63	22	50	3	0	1	721	1	9.41	2.48	3.80	1.09	26.4	6.9	0.99	.235	3.12	3.49	85	6.39	12.2
11	Jacob deGrom J. deGrom	73	2025	TEX	30	12	8	.600	30	2.97	185	0	0	0	172.2	122	57	57	26	37	3	0	0	669	3	9.64	1.93	5.00	1.36	27.7	5.5	0.92	.230	2.97	3.64	86	6.36	11.7
12	Carlos Rodón C. Rodón	76	2025	NYY	33	18	9	.667	33	3.09	203	0	0	0	195.1	132	67	74	22	73	9	0	0	789	4	9.35	3.36	2.78	1.01	25.7	9.3	1.05	.228	3.41	3.77	88	6.08	11.3
13	Gavin Williams G. Williams	76	2025	CLE	31	12	5	.706	31	3.06	173	0	0	0	167.2	130	57	62	23	83	3	0	0	704	9	9.29	4.46	2.08	1.23	24.6	11.8	1.27	.254	3.33	4.39	106	6.98	-4.9
14	Bryan Woo B. Woo	77	2025	SEA	30	15	7	.682	30	2.94	198	0	0	0	186.2	137	61	64	26	36	4	0	0	731	3	9.55	1.74	5.50	1.25	27.1	4.9	0.93	.238	3.09	3.46	86	6.61	11.4
15	Brayan Bello B. Bello	77	2025	BOS	29	11	9	.550	28	3.35	124	1	0	0	166.2	147	62	71	16	59	13	0	0	700	5	6.70	3.19	2.10	0.86	17.7	8.4	1.24	.268	3.83	4.18	99	7.94	0.6
16	Matthew Boyd M. Boyd	78	2025	CHC	31	14	8	.636	31	3.21	154	0	0	0	179.2	154	64	69	19	42	9	0	0	718	2	7.71	2.10	3.67	0.95	21.4	5.8	1.09	.273	3.46	3.64	90	7.71	8.2
17	Logan Webb L. Webb	79	2025	SFG	34	15	11	.577	34	3.22	224	0	0	0	207.0	210	74	82	14	46	6	0	0	856	2	9.74	2.00	4.87	0.61	26.2	5.4	1.24	.346	3.57	2.60	65	9.13	32.5
18	Joe Ryan J. Ryan	84	2025	MIN	31	13	10	.565	30	3.42	194	0	0	0	171.0	138	65	69	26	39	12	0	0	689	0	10.21	2.05	4.97	1.37	28.2	5.7	1.04	.268	3.63	3.73	89	7.26	8.4
19	Merrill Kelly M. Kelly	84	2025	TOT	32	12	9	.571	32	3.52	167	0	0	0	184.0	157	72	79	23	48	2	0	0	748	1	8.17	2.35	3.48	1.13	22.3	6.4	1.11	.264	3.86	3.75	92	7.68	6.8
20	Clay Holmes C. Holmes	87	2025	NYM	33	12	8	.600	31	3.53	129	0	0	0	165.2	150	65	74	14	66	13	0	0	708	6	7.01	3.59	1.95	0.76	18.2	9.3	1.30	.280	4.02	4.10	100	8.15	-0.2
21	Kevin Gausman K. Gausman	89	2025	TOR	32	10	11	.476	32	3.59	189	1	1	0	193.0	155	77	79	21	50	3	0	2	775	1	8.81	2.33	3.78	0.98	24.4	6.5	1.06	.262	3.68	3.41	82	7.23	16.4
22	Robbie Ray R. Ray	89	2025	SFG	32	11	8	.579	32	3.65	186	1	0	0	182.1	148	74	81	22	73	4	0	0	755	7	9.18	3.60	2.55	1.09	24.6	9.7	1.21	.268	4.00	3.92	99	7.31	0.6
23	Michael Wacha M. Wacha	90	2025	KCR	31	10	13	.435	31	3.86	126	0	0	0	172.2	166	74	74	15	45	4	0	0	716	2	6.57	2.35	2.80	0.78	17.6	6.3	1.22	.287	3.86	3.65	87	8.65	10
24	Brady Singer B. Singer	90	2025	CIN	32	14	12	.538	32	4.03	163	0	0	0	169.2	150	76	80	19	60	14	0	0	716	3	8.65	3.18	2.72	1.01	22.8	8.4	1.24	.285	4.24	3.97	91	7.96	7.7
25	Framber Valdez F. Valdez	90	2025	HOU	31	13	11	.542	31	3.66	187	2	0	0	192.0	171	78	82	15	68	7	0	0	802	12	8.77	3.19	2.75	0.70	23.3	8.5	1.24	.297	3.84	3.37	82	8.02	16.3