Zac Gallen has the highest ERA this season, with an ERA of 5.54.

Interpreted as:

worst pitcher era with a minimum of 1 IP per team game in MLB currently 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	Zac Gallen Z. Gallen	5.54	2025	AZ	12	3	7	.300	12	66	0	0	0	66.2	61	41	42	10	32	2	0	1	292	1	8.91	4.32	2.06	1.35	22.6	11.0	1.39	.280	5.67	134	4.57	119	8.24	-5.6
2	JP Sears	5.18	2025	ATH	11	4	5	.444	11	43	0	0	0	57.1	62	33	33	13	11	3	0	0	246	0	6.75	1.73	3.91	2.04	17.5	4.5	1.27	.278	5.18	132	5.25	130	9.73	-7.6
3	Jack Kochanowicz J. Kochanowicz	5.07	2025	LAA	11	3	6	.333	11	40	0	0	0	60.1	63	34	35	9	29	4	0	2	264	2	5.97	4.33	1.38	1.34	15.2	11.0	1.52	.297	5.22	126	5.32	128	9.40	-7.4
4	Dean Kremer D. Kremer	5.02	2025	BAL	11	4	5	.444	11	44	0	0	0	61.0	69	34	36	10	16	1	0	0	265	4	6.49	2.36	2.75	1.48	16.6	6.0	1.39	.304	5.31	130	4.59	116	10.18	-4.4
5	Shane Baz S. Baz	4.92	2025	TBR	11	4	3	.571	11	55	0	0	0	60.1	61	33	33	12	22	3	0	0	257	0	8.20	3.28	2.50	1.79	21.4	8.6	1.38	.297	4.92	130	5.07	129	9.10	-8
6	Mitchell Parker M. Parker	4.65	2025	WSH	11	4	4	.500	11	40	0	0	0	60.0	54	31	33	5	26	3	0	0	259	2	6.00	3.90	1.54	0.75	15.4	10.0	1.33	.265	4.95	115	4.27	107	8.10	-1.7
7	Brady Singer B. Singer	4.60	2025	CIN	11	6	3	.667	11	49	0	0	0	58.2	55	30	33	7	23	1	0	0	250	0	7.52	3.53	2.13	1.07	19.6	9.2	1.33	.282	5.06	107	4.18	99	8.44	0.3
8	Dylan Cease D. Cease	4.58	2025	SDP	11	1	3	.250	11	72	0	0	0	59.0	54	30	32	7	20	1	0	1	247	2	10.98	3.05	3.60	1.07	29.1	8.1	1.25	.320	4.88	117	3.24	83	8.24	4.5
9	Max Meyer M. Meyer	4.53	2025	MIA	11	3	4	.429	11	63	0	0	0	59.2	62	30	34	10	19	2	0	0	260	0	9.50	2.87	3.32	1.51	24.2	7.3	1.36	.313	5.13	109	4.19	106	9.35	-1.5
10	Taj Bradley T. Bradley	4.38	2025	TBR	11	4	4	.500	11	54	0	0	0	63.2	55	31	32	9	25	4	0	0	264	0	7.63	3.53	2.16	1.27	20.5	9.5	1.26	.267	4.52	116	4.58	116	7.77	-4.8
11	Michael Lorenzen M. Lorenzen	4.33	2025	KCR	11	3	6	.333	11	52	0	0	0	62.1	68	30	32	10	19	2	0	0	272	8	7.51	2.74	2.74	1.44	19.1	7.0	1.40	.307	4.62	105	4.50	111	9.82	-3.1
12	Andre Pallante A. Pallante	4.23	2025	STL	11	4	3	.571	11	42	0	0	0	61.2	61	29	30	9	23	0	0	0	264	4	6.13	3.36	1.83	1.31	15.9	8.7	1.36	.274	4.38	106	4.72	122	8.90	-5.9
13	Jonathan Cannon J. Cannon	4.15	2025	CWS	11	2	6	.250	9	46	0	0	0	60.2	64	28	29	8	18	4	0	0	265	2	6.82	2.67	2.56	1.19	17.4	6.8	1.35	.296	4.30	105	4.35	104	9.49	-1.1
14	Sonny Gray S. Gray	4.06	2025	STL	11	5	1	.833	11	66	0	0	0	62.0	59	28	30	9	13	2	0	0	254	1	9.58	1.89	5.08	1.31	26.0	5.1	1.16	.305	4.35	102	3.55	92	8.56	2.3
15	Zack Littell Z. Littell	3.97	2025	TBR	11	4	5	.444	11	42	0	0	0	65.2	61	29	29	14	10	2	0	1	260	1	5.76	1.37	4.20	1.92	16.2	3.8	1.08	.245	3.97	105	5.11	130	8.36	-9
16	Jeffrey Springs J. Springs	3.97	2025	ATH	11	5	3	.625	11	47	0	0	0	59.0	49	26	33	9	23	0	0	0	250	0	7.17	3.51	2.04	1.37	18.8	9.2	1.22	.234	5.03	101	4.63	114	7.47	-3.8
17	Jack Flaherty J. Flaherty	3.94	2025	DET	11	3	6	.333	11	72	0	0	0	59.1	47	26	27	11	19	2	0	0	241	0	10.92	2.88	3.79	1.67	29.9	7.9	1.11	.263	4.10	101	4.11	103	7.13	-0.7
18	Chris Paddack C. Paddack	3.92	2025	MIN	11	2	5	.286	11	40	0	0	0	57.1	50	25	27	7	19	1	0	0	238	2	6.28	2.98	2.11	1.10	16.8	8.0	1.20	.251	4.24	100	4.31	106	7.85	-1.6
19	Erick Fedde E. Fedde	3.90	2025	STL	11	3	4	.429	11	39	1	1	0	62.1	55	27	29	6	26	2	0	0	260	1	5.63	3.75	1.50	0.87	15.0	10.0	1.30	.262	4.19	98	4.42	114	7.94	-3.8
20	Brandon Pfaadt B. Pfaadt	3.90	2025	AZ	11	7	3	.700	11	49	0	0	0	62.1	61	27	29	12	15	4	0	1	261	1	7.07	2.17	3.27	1.73	18.8	5.7	1.22	.271	4.19	95	4.91	128	8.81	-7.7
21	Luis Severino L. Severino	3.89	2025	ATH	12	1	4	.200	12	54	0	0	0	71.2	66	31	33	4	22	4	0	1	305	1	6.78	2.76	2.45	0.50	17.7	7.2	1.23	.281	4.14	99	3.38	83	8.29	5.4
22	José Berríos J. Berríos	3.86	2025	TOR	12	2	2	.500	12	65	0	0	0	70.0	63	30	30	10	28	3	0	1	293	1	8.36	3.60	2.32	1.29	22.2	9.6	1.30	.283	3.86	99	4.40	109	8.10	-2.7
23	Jameson Taillon J. Taillon	3.86	2025	CHC	11	4	3	.571	11	51	0	0	0	63.0	54	27	28	15	12	0	0	0	253	0	7.29	1.71	4.25	2.14	20.2	4.7	1.05	.223	4.00	98	5.12	132	7.71	-8.9
24	Tanner Bibee T. Bibee	3.86	2025	CLE	11	4	5	.444	11	50	0	0	0	63.0	59	27	29	12	21	2	0	1	261	0	7.14	3.00	2.38	1.71	19.2	8.0	1.27	.267	4.14	99	5.05	126	8.43	-7.4
25	José Soriano J. Soriano	3.73	2025	LAA	11	3	5	.375	11	47	0	0	0	62.2	66	26	29	3	30	1	0	0	272	3	6.75	4.31	1.57	0.43	17.3	11.0	1.53	.330	4.16	93	3.67	88	9.48	3.4