Jack Kochanowicz has the highest ERA this season, with an ERA of 5.34.

Interpreted as:

highest era with a minimum of 1 IP per team game by a pitcher 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	Jack Kochanowicz J. Kochanowicz	5.34	2025	LAA	12	3	7	.300	12	44	0	0	0	64.0	68	38	39	10	32	5	0	2	283	3	6.19	4.50	1.38	1.41	15.5	11.3	1.56	.302	5.48	132	5.46	131	9.56	-8.8
2	Kyle Freeland K. Freeland	5.19	2025	COL	13	1	8	.111	13	52	0	0	0	67.2	91	39	51	7	13	2	0	1	303	1	6.92	1.73	4.00	0.93	17.2	4.3	1.54	.367	6.78	114	3.54	85	12.10	4.4
3	Zac Gallen Z. Gallen	5.13	2025	AZ	13	4	7	.364	13	70	0	0	0	73.2	65	42	45	11	33	2	0	1	319	1	8.55	4.03	2.12	1.34	21.9	10.3	1.33	.266	5.50	126	4.53	118	7.94	-6
4	Michael Lorenzen M. Lorenzen	5.12	2025	KCR	12	3	6	.333	12	54	0	0	0	65.0	75	37	39	12	20	2	0	0	288	9	7.48	2.77	2.70	1.66	18.8	6.9	1.46	.315	5.40	123	4.82	119	10.38	-5.5
5	Brandon Pfaadt B. Pfaadt	5.05	2025	AZ	12	7	4	.636	12	49	0	0	0	62.1	67	35	37	12	15	6	0	1	269	1	7.07	2.17	3.27	1.73	18.2	5.6	1.32	.294	5.34	124	5.01	131	9.67	-8.5
6	Shane Baz S. Baz	4.96	2025	TBR	12	5	3	.625	12	60	0	0	0	65.1	66	36	36	13	23	3	0	0	279	0	8.27	3.17	2.61	1.79	21.5	8.2	1.36	.294	4.96	130	5.01	127	9.09	-8.1
7	Andre Pallante A. Pallante	4.91	2025	STL	12	4	3	.571	12	44	0	0	0	66.0	68	36	37	11	23	0	0	0	284	4	6.00	3.14	1.91	1.50	15.5	8.1	1.38	.277	5.05	124	4.94	128	9.27	-8.1
8	Max Meyer M. Meyer	4.73	2025	MIA	12	3	5	.375	12	68	0	0	0	64.2	72	34	39	12	20	2	0	0	285	0	9.46	2.78	3.40	1.67	23.9	7.0	1.42	.328	5.43	115	4.39	111	10.02	-3.2
9	Mitchell Parker M. Parker	4.71	2025	WSH	12	4	5	.444	12	42	0	0	0	65.0	57	34	36	6	28	3	0	0	279	2	5.82	3.88	1.50	0.83	15.1	10.0	1.31	.255	4.98	118	4.40	111	7.89	-3
10	Dean Kremer D. Kremer	4.70	2025	BAL	12	5	5	.500	12	51	0	0	0	67.0	75	35	37	10	18	1	0	0	291	4	6.85	2.42	2.83	1.34	17.5	6.2	1.39	.308	4.97	121	4.33	109	10.07	-2.8
11	Dylan Cease D. Cease	4.66	2025	SDP	12	1	4	.200	12	78	0	0	0	63.2	61	33	35	8	21	1	0	1	269	2	11.03	2.97	3.71	1.13	29.0	7.8	1.29	.329	4.95	120	3.28	84	8.62	4.4
12	Brady Singer B. Singer	4.66	2025	CIN	12	6	4	.600	12	53	0	0	0	63.2	59	33	36	8	26	1	0	0	271	0	7.49	3.68	2.04	1.13	19.6	9.6	1.34	.279	5.09	109	4.31	103	8.34	-0.7
13	Jonathan Cannon J. Cannon	4.66	2025	CWS	12	2	7	.222	10	51	0	0	0	63.2	68	33	34	11	21	4	0	0	281	2	7.21	2.97	2.43	1.55	18.1	7.5	1.40	.294	4.81	117	4.89	117	9.61	-4.8
14	Jeffrey Springs J. Springs	4.66	2025	ATH	13	5	4	.556	12	56	0	0	0	67.2	60	35	43	11	31	0	0	0	295	0	7.45	4.12	1.81	1.46	19.0	10.5	1.34	.249	5.72	118	4.90	121	7.98	-6.3
15	Luis Severino L. Severino	4.54	2025	ATH	13	1	5	.167	13	55	0	0	0	77.1	75	39	41	4	23	5	0	1	333	1	6.40	2.68	2.39	0.47	16.5	6.9	1.27	.289	4.77	115	3.40	84	8.73	5.6
16	José Soriano J. Soriano	4.11	2025	LAA	13	4	5	.444	13	52	0	0	0	72.1	78	33	36	3	37	2	0	0	317	3	6.47	4.60	1.41	0.37	16.4	11.7	1.59	.336	4.48	102	3.78	91	9.71	3.1
17	Luis L. Ortiz L. L. Ortiz	4.02	2025	CLE	12	3	6	.333	12	71	0	0	0	65.0	58	29	30	7	33	0	0	0	279	0	9.83	4.57	2.15	0.97	25.4	11.8	1.40	.304	4.15	102	3.80	95	8.03	1.5
18	Taj Bradley T. Bradley	3.95	2025	TBR	12	4	5	.444	12	64	0	0	0	70.2	58	31	33	9	27	4	0	0	291	0	8.15	3.44	2.37	1.15	22.0	9.3	1.20	.262	4.20	104	4.23	107	7.39	-2.5
19	Jake Irvin J. Irvin	3.93	2025	WSH	12	5	1	.833	12	47	0	0	0	73.1	66	32	32	10	20	1	0	0	302	1	5.77	2.45	2.35	1.23	15.6	6.6	1.17	.250	3.93	98	4.41	111	8.10	-3.5
20	Nick Martinez N. Martinez	3.89	2025	CIN	12	3	6	.333	12	47	0	0	0	69.1	66	30	31	6	15	2	0	0	279	5	6.10	1.95	3.13	0.78	16.8	5.4	1.17	.287	4.02	91	3.57	85	8.57	4.6
21	Tanner Bibee T. Bibee	3.89	2025	CLE	12	4	6	.400	12	56	0	0	0	69.1	63	30	32	14	23	2	0	1	287	0	7.27	2.99	2.43	1.82	19.5	8.0	1.24	.255	4.15	99	5.16	128	8.18	-8.9
22	Tyler Anderson T. Anderson	3.86	2025	LAA	12	2	2	.500	12	51	0	0	0	65.1	57	28	32	11	26	2	0	3	282	4	7.03	3.58	1.96	1.52	18.1	9.2	1.27	.240	4.41	95	4.98	119	7.85	-5.6
23	Zack Littell Z. Littell	3.86	2025	TBR	12	5	5	.500	12	48	1	0	0	74.2	71	32	32	16	11	3	0	1	297	1	5.79	1.33	4.36	1.93	16.2	3.7	1.10	.251	3.86	101	5.13	130	8.56	-10.3
24	Kevin Gausman K. Gausman	3.82	2025	TOR	12	5	4	.556	12	68	0	0	0	70.2	58	30	31	8	14	0	0	1	278	0	8.66	1.78	4.86	1.02	24.5	5.0	1.02	.266	3.95	97	3.21	79	7.39	6.6
25	Erick Fedde E. Fedde	3.82	2025	STL	12	3	5	.375	12	44	1	1	0	68.1	59	29	31	6	29	2	0	0	284	1	5.80	3.82	1.52	0.79	15.5	10.2	1.29	.261	4.08	97	4.28	111	7.77	-3.3