Tanner Houck has the highest ERA by an active pitcher this season, with an ERA of 8.04.

Interpreted as:

current pitchers with highest era with a minimum of 0.5 IP per team game 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	8.04	2025	BOS	9	0	3	.000	9	32	0	0	0	43.2	57	39	41	10	17	5	0	0	203	2	6.60	3.50	1.88	2.06	15.8	8.4	1.69	.338	8.45	191	6.08	149	11.75	-9.5
2	Sandy Alcantara S. Alcantara	7.89	2025	MIA	12	2	7	.222	12	44	0	0	0	57.0	60	50	51	8	30	2	0	0	261	4	6.95	4.74	1.47	1.26	16.9	11.5	1.58	.294	8.05	192	5.02	127	9.47	-6.8
3	Germán Márquez G. Márquez	7.00	2025	COL	13	2	8	.200	13	41	0	0	0	63.0	85	49	55	7	21	5	0	0	296	4	5.86	3.00	1.95	1.00	13.9	7.1	1.68	.351	7.86	154	4.44	107	12.14	-1.9
4	Bryse Wilson B. Wilson	6.95	2025	CWS	19	0	2	.000	5	27	0	0	0	45.1	67	35	37	11	19	2	7	0	218	0	5.36	3.77	1.42	2.18	12.4	8.7	1.90	.352	7.35	173	6.41	154	13.30	-10.9
5	Chase Dollander C. Dollander	6.85	2025	COL	10	2	6	.250	10	42	0	0	0	44.2	47	34	37	12	22	2	0	0	204	1	8.46	4.43	1.91	2.42	20.6	10.8	1.54	.278	7.46	151	6.28	152	9.47	-10
6	Eduardo Rodriguez E. Rodriguez	6.70	2025	AZ	10	1	3	.250	10	55	0	0	0	49.2	64	37	43	9	18	0	0	0	232	2	9.97	3.26	3.06	1.63	23.7	7.8	1.65	.367	7.79	165	4.29	112	11.60	-2.7
7	Antonio Senzatela A. Senzatela	6.68	2025	COL	13	1	10	.091	12	33	0	0	0	62.0	101	46	52	11	21	1	0	0	300	3	4.79	3.05	1.57	1.60	11.0	7.0	1.97	.385	7.55	147	5.36	130	14.66	-7.9
8	Charlie Morton C. Morton	6.59	2025	BAL	15	2	7	.222	9	57	0	0	0	56.0	64	41	43	10	31	4	1	0	265	1	9.16	4.98	1.84	1.61	21.5	11.7	1.70	.331	6.91	169	5.22	131	10.29	-8
9	Jordan Hicks J. Hicks	6.47	2025	SFG	13	1	5	.167	9	43	0	0	0	48.2	55	35	36	3	20	4	2	0	217	4	7.95	3.70	2.15	0.55	19.8	9.2	1.54	.354	6.66	166	3.57	94	10.17	1.1
10	Lucas Giolito L. Giolito	6.42	2025	BOS	7	1	1	.500	7	27	0	0	0	33.2	44	24	24	6	11	0	0	0	150	1	7.22	2.94	2.45	1.60	18.0	7.3	1.63	.358	6.42	152	4.75	116	11.76	-2.4
11	Aaron Nola A. Nola	6.16	2025	PHI	9	1	7	.125	9	52	0	0	0	49.2	59	34	35	11	16	3	0	0	220	1	9.42	2.90	3.25	1.99	23.6	7.3	1.51	.348	6.34	153	4.99	124	10.69	-5.2
12	Osvaldo Bido O. Bido	6.14	2025	ATH	10	2	4	.333	9	30	0	0	0	44.0	54	30	32	10	20	2	0	0	204	0	6.14	4.09	1.50	2.05	14.7	9.8	1.68	.310	6.55	154	6.15	152	11.05	-10.2
13	Bowden Francis B. Francis	6.12	2025	TOR	13	2	8	.200	13	50	0	0	0	60.1	70	41	44	19	24	4	0	0	271	3	7.46	3.58	2.08	2.83	18.5	8.9	1.56	.293	6.56	155	6.89	170	10.44	-19
14	Tyler Alexander T. Alexander	5.95	2025	TOT	22	3	6	.333	4	32	0	0	1	39.1	47	26	32	3	13	1	7	0	177	0	7.32	2.97	2.46	0.69	18.1	7.3	1.53	.344	7.32	148	3.49	87	10.75	2.2
15	Trevor Williams T. Williams	5.91	2025	WSH	13	3	7	.300	13	49	0	0	0	64.0	76	42	44	8	16	2	0	0	283	1	6.89	2.25	3.06	1.13	17.3	5.7	1.44	.327	6.19	148	4.00	100	10.69	-0.1
16	Bryce Miller B. Miller	5.73	2025	SEA	10	2	5	.286	10	39	0	0	0	48.2	51	31	31	5	23	3	0	0	216	2	7.21	4.25	1.70	0.92	18.1	10.6	1.52	.315	5.73	154	4.39	113	9.43	-2.9
17	Cal Quantrill C. Quantrill	5.63	2025	MIA	12	3	6	.333	12	40	0	0	0	54.1	64	34	34	7	17	2	0	0	233	2	6.63	2.82	2.35	1.16	17.2	7.3	1.49	.341	5.63	137	4.31	109	10.60	-2.2
18	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	139	5.45	131	10.29	-9.2
19	Brandon Pfaadt B. Pfaadt	5.51	2025	AZ	13	7	4	.636	13	51	0	0	0	65.1	72	40	43	12	17	6	0	1	286	2	7.03	2.34	3.00	1.65	17.8	5.9	1.36	.300	5.92	136	4.94	129	9.92	-8.4
20	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	5.10	122	9.14	-6.4
21	Ben Brown B. Brown	5.37	2025	CHC	13	3	4	.429	11	78	0	0	0	63.2	71	38	39	7	20	3	0	0	282	1	11.03	2.83	3.90	0.99	27.7	7.1	1.43	.368	5.51	138	3.12	81	10.04	5.3
22	Will Warren W. Warren	5.34	2025	NYY	13	4	3	.571	13	75	0	0	0	57.1	53	34	36	6	28	1	0	0	255	2	11.77	4.40	2.68	0.94	29.4	11.0	1.41	.324	5.65	134	3.32	80	8.32	5.4
23	JP Sears	5.21	2025	ATH	13	5	5	.500	13	49	0	0	0	67.1	73	39	39	15	14	4	0	0	290	1	6.55	1.87	3.50	2.00	16.9	4.8	1.29	.279	5.21	131	5.30	131	9.76	-9.3
24	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
25	Emerson Hancock E. Hancock	5.19	2025	SEA	10	2	2	.500	10	38	0	0	0	50.1	57	29	29	9	17	2	0	0	217	2	6.79	3.04	2.24	1.61	17.5	7.8	1.47	.318	5.19	139	5.00	129	10.19	-6.6