Tanner Houck has the worst ERA this season, with an ERA of 7.58.

Interpreted as:

worst era with a minimum of 1 IP per team game by a player 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	Tanner Houck T. Houck	7.58	2025	BOS	6	0	2	.000	6	24	0	0	0	29.2	38	25	26	6	12	2	0	0	134	1	7.28	3.64	2.00	1.82	17.9	9.0	1.69	.356	7.89	184	5.46	135	11.53	-4.6
2	Aaron Nola A. Nola	6.43	2025	PHI	5	0	5	.000	5	31	0	0	0	28.0	34	20	21	6	11	1	0	0	126	1	9.96	3.54	2.82	1.93	24.6	8.7	1.61	.364	6.75	160	4.89	123	10.93	-2.8
3	Jeffrey Springs J. Springs	6.04	2025	ATH	6	3	3	.500	6	27	0	0	0	28.1	30	19	25	5	16	0	0	0	132	0	8.58	5.08	1.69	1.59	20.5	12.1	1.62	.298	7.94	162	5.11	132	9.53	-4
4	Sean Burke S. Burke	6.00	2025	CWS	6	1	4	.200	5	20	0	0	0	27.0	29	18	22	7	11	3	0	0	125	1	6.67	3.67	1.82	2.33	16.0	8.8	1.48	.262	7.33	153	6.48	157	9.67	-6.8
5	Kyle Freeland K. Freeland	5.93	2025	COL	6	0	4	.000	6	23	0	0	0	30.1	40	20	22	2	4	1	0	0	135	0	6.82	1.19	5.75	0.59	17.0	3.0	1.45	.362	6.53	131	2.87	70	11.87	4
6	Zac Gallen Z. Gallen	5.57	2025	AZ	6	1	4	.200	6	35	0	0	0	32.1	30	20	20	5	15	1	0	0	143	1	9.74	4.18	2.33	1.39	24.5	10.5	1.39	.287	5.57	137	4.36	115	8.35	-2.2
7	Jack Kochanowicz J. Kochanowicz	5.47	2025	LAA	5	1	3	.250	5	13	0	0	0	26.1	31	16	17	5	8	2	0	2	114	1	4.44	2.73	1.63	1.71	11.4	7.0	1.48	.302	5.81	138	5.65	137	10.59	-4.3
8	Chris Sale C. Sale	5.40	2025	ATL	6	1	2	.333	6	36	0	0	0	28.1	36	17	18	4	9	3	0	0	132	1	11.44	2.86	4.00	1.27	27.3	6.8	1.59	.400	5.72	133	3.60	94	11.44	0.7
9	Zack Littell Z. Littell	5.28	2025	TBR	5	0	5	.000	5	21	0	0	0	29.0	29	17	17	8	7	0	0	1	119	0	6.52	2.17	3.00	2.48	17.6	5.9	1.24	.253	5.28	141	5.89	152	9.00	-6.7
10	Antonio Senzatela A. Senzatela	5.22	2025	COL	6	1	4	.200	6	13	0	0	0	29.1	50	17	19	7	5	1	0	0	137	0	3.99	1.53	2.60	2.15	9.5	3.6	1.88	.387	5.83	115	5.86	143	15.34	-5.4
11	Tanner Bibee T. Bibee	5.19	2025	CLE	5	2	2	.500	5	20	0	0	0	26.0	24	15	15	8	14	1	0	0	111	0	6.92	4.85	1.43	2.77	18.0	12.6	1.46	.235	5.19	135	7.22	182	8.31	-9.5
12	Taj Bradley T. Bradley	5.08	2025	TBR	5	2	1	.667	5	27	0	0	0	28.1	27	16	16	4	12	1	0	0	120	0	8.58	3.81	2.25	1.27	22.5	10.0	1.38	.303	5.08	136	4.34	112	8.58	-1.5
13	Justin Verlander J. Verlander	4.99	2025	SFG	6	0	2	.000	6	28	0	0	0	30.2	31	17	18	4	12	0	0	0	133	0	8.22	3.52	2.33	1.17	21.1	9.0	1.40	.303	5.28	128	4.08	109	9.10	-1.2
14	Ryan Pepiot R. Pepiot	4.82	2025	TBR	5	1	3	.250	5	31	0	0	0	28.0	32	15	16	8	10	1	0	0	127	2	9.96	3.21	3.10	2.57	24.4	7.9	1.50	.312	5.14	129	5.71	147	10.29	-5.9
15	Grant Holmes G. Holmes	4.50	2025	ATL	6	2	1	.667	5	26	0	0	0	28.0	18	14	14	5	17	1	1	0	117	1	8.36	5.46	1.53	1.61	22.2	14.5	1.25	.191	4.50	111	5.43	142	5.79	-5.1
16	Jonathan Cannon J. Cannon	4.50	2025	CWS	6	1	3	.250	5	27	0	0	0	32.0	29	16	16	5	17	2	0	0	142	2	7.59	4.78	1.59	1.41	19.0	12.0	1.44	.264	4.50	115	5.16	125	8.16	-3.5
17	Luis Castillo L. Castillo	4.44	2025	SEA	5	2	2	.500	5	23	0	0	0	26.1	30	13	13	3	12	1	0	0	121	0	7.86	4.10	1.92	1.03	19.0	9.9	1.59	.329	4.44	122	4.25	111	10.25	-1.3
18	Merrill Kelly M. Kelly	4.41	2025	AZ	6	3	1	.750	6	25	0	0	0	32.2	24	16	17	5	12	1	0	0	135	0	6.89	3.31	2.08	1.38	18.5	8.9	1.10	.207	4.68	109	4.69	124	6.61	-3.4
19	Ben Lively B. Lively	4.40	2025	CLE	6	1	2	.333	6	23	0	0	0	30.2	30	15	15	5	11	0	0	0	126	0	6.75	3.23	2.09	1.47	18.3	8.7	1.34	.287	4.40	114	4.73	119	8.80	-2.6
20	Cole Ragans C. Ragans	4.40	2025	KCR	6	1	1	.500	6	46	0	0	0	30.2	27	15	16	4	9	1	0	0	128	2	13.50	2.64	5.11	1.17	35.9	7.0	1.17	.338	4.70	108	2.71	68	7.92	4.4
21	Eduardo Rodriguez E. Rodriguez	4.40	2025	AZ	5	1	2	.333	5	34	0	0	0	28.2	30	14	17	3	7	0	0	0	123	2	10.67	2.20	4.86	0.94	27.6	5.7	1.29	.342	5.34	108	2.75	73	9.42	3.3
22	José Soriano J. Soriano	4.34	2025	LAA	5	2	3	.400	5	22	0	0	0	29.0	30	14	14	3	14	0	0	0	123	0	6.83	4.34	1.57	0.93	17.9	11.4	1.52	.321	4.34	110	4.31	104	9.31	-0.5
23	Yusei Kikuchi Y. Kikuchi	4.31	2025	LAA	6	0	4	.000	6	28	0	0	0	31.1	32	15	16	4	18	0	0	0	140	1	8.04	5.17	1.56	1.15	20.0	12.9	1.60	.311	4.60	109	4.63	112	9.19	-1.7
24	Walker Buehler W. Buehler	4.28	2025	BOS	6	4	1	.800	6	29	0	0	0	33.2	32	16	16	5	9	2	0	0	140	0	7.75	2.41	3.22	1.34	20.7	6.4	1.22	.284	4.28	104	4.22	104	8.55	-0.6
25	José Berríos J. Berríos	4.24	2025	TOR	6	1	1	.500	6	28	0	0	0	34.0	33	16	16	6	15	0	0	0	144	1	7.41	3.97	1.87	1.59	19.4	10.4	1.41	.284	4.24	110	5.00	125	8.74	-3.8