Jack Kochanowicz has the worst ERA this season, with an ERA of 5.61.

Interpreted as:

worst pitcher era with a minimum of 1 IP per team game rvrt 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	5.61	2025	LAA	13	3	7	.300	13	48	0	0	0	67.1	77	42	43	11	33	5	0	2	301	3	6.42	4.41	1.45	1.47	15.9	11.0	1.63	.324	5.75	138	5.45	130	10.29	-9.2
2	Kyle Hendricks K. Hendricks	5.40	2025	LAA	12	3	6	.333	12	41	0	0	0	65.0	66	39	39	11	20	4	0	3	278	0	5.68	2.77	2.05	1.52	14.7	7.2	1.32	.272	5.40	133	5.11	122	9.14	-6.4
3	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	3.53	85	12.10	4.5
4	Zac Gallen Z. Gallen	5.15	2025	AZ	14	4	8	.333	14	75	0	0	0	80.1	71	46	49	14	36	2	0	1	346	1	8.40	4.03	2.08	1.57	21.7	10.4	1.33	.260	5.49	127	4.88	127	7.95	-9.8
5	Dean Kremer D. Kremer	4.98	2025	BAL	13	5	6	.455	13	53	0	0	0	72.1	83	40	42	10	19	1	0	0	315	5	6.59	2.36	2.79	1.24	16.8	6.0	1.41	.315	5.23	127	4.22	106	10.33	-2.1
6	Shane Baz S. Baz	4.97	2025	TBR	13	5	3	.625	13	65	0	0	0	70.2	69	39	39	13	26	4	0	0	301	0	8.28	3.31	2.50	1.66	21.6	8.6	1.34	.290	4.97	130	4.89	124	8.79	-7.8
7	Michael Lorenzen M. Lorenzen	4.94	2025	KCR	13	4	6	.400	13	61	0	0	0	71.0	76	39	41	13	22	2	0	0	309	9	7.73	2.79	2.77	1.65	19.7	7.1	1.38	.299	5.20	118	4.74	117	9.63	-5.3
8	Luis Severino L. Severino	4.77	2025	ATH	14	1	6	.143	14	60	0	0	0	83.0	83	44	47	6	27	5	0	1	361	1	6.51	2.93	2.22	0.65	16.6	7.5	1.33	.293	5.10	120	3.71	91	9.00	3.2
9	Andre Pallante A. Pallante	4.75	2025	STL	13	4	3	.571	13	47	0	0	0	72.0	75	38	39	11	24	0	0	0	311	4	5.88	3.00	1.96	1.38	15.1	7.7	1.38	.279	4.88	120	4.74	123	9.38	-7.2
10	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
11	Dylan Cease D. Cease	4.72	2025	SDP	13	1	5	.167	13	85	0	0	0	68.2	66	36	38	8	24	1	0	1	292	2	11.14	3.15	3.54	1.05	29.1	8.2	1.31	.333	4.98	122	3.19	82	8.65	5.5
12	Jeffrey Springs J. Springs	4.64	2025	ATH	14	5	5	.500	12	64	0	0	0	73.2	65	38	47	12	31	0	0	0	319	0	7.82	3.79	2.06	1.47	20.1	9.7	1.30	.250	5.74	117	4.70	116	7.94	-5.3
13	Brady Singer B. Singer	4.59	2025	CIN	13	6	4	.600	13	56	0	0	0	68.2	64	35	38	9	29	1	0	0	292	0	7.34	3.80	1.93	1.18	19.2	9.9	1.35	.279	4.98	108	4.44	106	8.39	-1.7
14	Taj Bradley T. Bradley	4.58	2025	TBR	13	4	5	.444	13	66	0	0	0	74.2	64	38	40	10	29	4	0	0	310	0	7.96	3.50	2.28	1.21	21.3	9.4	1.25	.269	4.82	120	4.36	111	7.71	-3.7
15	Jesús Luzardo J. Luzardo	4.46	2025	PHI	13	5	2	.714	13	83	0	0	0	72.2	81	36	39	6	24	1	0	0	314	1	10.28	2.97	3.46	0.74	26.4	7.6	1.44	.375	4.83	111	2.88	72	10.03	9.1
16	Mitchell Parker M. Parker	4.44	2025	WSH	13	4	6	.400	13	47	0	0	0	71.0	61	35	38	6	28	3	0	0	300	2	5.96	3.55	1.68	0.76	15.7	9.3	1.25	.255	4.82	111	4.15	104	7.73	-1.2
17	Luis L. Ortiz L. L. Ortiz	4.26	2025	CLE	13	3	7	.300	13	76	0	0	0	69.2	67	33	34	9	34	0	0	0	302	0	9.82	4.39	2.24	1.16	25.2	11.3	1.45	.317	4.39	108	4.02	100	8.66	-0.1
18	Mitch Keller M. Keller	4.13	2025	PIT	13	1	8	.111	13	61	0	0	0	76.1	77	35	38	5	20	4	0	0	324	1	7.19	2.36	3.05	0.59	18.8	6.2	1.27	.308	4.48	101	3.26	83	9.08	5.9
19	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	101	3.78	90	9.71	3.2
20	Sean Burke S. Burke	4.03	2025	CWS	13	3	6	.333	11	50	0	0	0	67.0	61	30	35	10	32	4	0	0	291	2	6.72	4.30	1.56	1.34	17.2	11.0	1.39	.262	4.70	100	5.12	122	8.19	-6.7
21	Jake Irvin J. Irvin	4.02	2025	WSH	13	5	2	.714	13	50	0	0	0	78.1	74	35	35	11	22	1	0	0	328	1	5.74	2.53	2.27	1.26	15.2	6.7	1.23	.258	4.02	101	4.49	113	8.50	-4.3
22	Grant Holmes G. Holmes	3.99	2025	ATL	13	3	4	.429	12	68	0	0	0	67.2	52	30	30	11	29	2	1	0	280	2	9.04	3.86	2.34	1.46	24.3	10.4	1.20	.241	3.99	98	4.54	117	6.92	-5.2
23	Tyler Anderson T. Anderson	3.99	2025	LAA	13	2	3	.400	13	57	0	0	0	70.0	65	31	35	11	27	3	0	3	307	4	7.33	3.47	2.11	1.41	18.6	8.8	1.31	.258	4.50	98	4.76	114	8.36	-4.3
24	Kevin Gausman K. Gausman	3.87	2025	TOR	13	5	4	.556	13	73	0	0	0	76.2	62	33	34	9	17	1	0	1	302	0	8.57	2.00	4.29	1.06	24.2	5.6	1.03	.262	3.99	98	3.39	83	7.28	5.7
25	Gavin Williams G. Williams	3.86	2025	CLE	13	5	3	.625	13	71	0	0	0	65.1	57	28	32	9	36	1	0	0	282	5	9.78	4.96	1.97	1.24	25.2	12.8	1.42	.291	4.41	98	4.38	109	7.85	-2.7