pitcher with the highest era with a minimum of 250 innings pitched in a season after 1946

Since 1947, Jim Bibby has the highest ERA with 250.0+ innings pitched in a season, with an ERA of 4.74 in 1974.

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	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	Jim Bibby J. Bibby	4.74	264.0	1974	TEX	41	19	19	.500	41	149	11	5	0	255	139	146	25	113	9	0	4	1,134	11	5.08	3.85	1.32	0.85	13.1	10.0	1.39	.274	4.98	132	4.06	114	8.69	-15.5
2	Mike Torrez M. Torrez	4.49	252.1	1979	BOS	36	16	13	.552	36	125	12	1	0	254	126	144	20	121	5	0	8	1,109	6	4.46	4.32	1.03	0.71	11.3	10.9	1.49	.279	5.14	100	4.26	99	9.06	1.8
3	Steve Rogers S. Rogers	4.47	253.2	1974	MON	38	15	22	.405	38	154	11	1	0	255	126	139	19	80	5	0	7	1,064	7	5.46	2.84	1.93	0.67	14.5	7.5	1.32	.293	4.93	119	3.33	91	9.05	8.9
4	Robin Roberts R. Roberts	4.45	297.1	1956	PHI	43	19	18	.514	37	157	22	1	3	328	147	155	46	40	2	6	3	1,228	2	4.75	1.21	3.93	1.39	12.8	3.3	1.24	.287	4.69	119	3.75	97	9.93	3.8
5	Dick Tidrow D. Tidrow	4.42	274.2	1973	CLE	42	14	16	.467	40	138	13	2	0	289	135	150	31	95	8	2	10	1,194	6	4.52	3.11	1.45	1.02	11.6	8.0	1.40	.280	4.92	114	4.15	107	9.47	-7.8
6	Art Ditmar A. Ditmar	4.42	254.1	1956	KCA	44	12	22	.353	34	126	14	2	1	254	125	141	30	108	7	6	6	1,101	5	4.46	3.82	1.17	1.06	11.4	9.8	1.42	.270	4.99	102	4.27	102	8.99	-1.7
7	Jon Lieber J. Lieber	4.41	251.0	2000	CHC	35	12	11	.522	35	192	6	1	0	248	123	130	36	54	10	0	3	1,047	2	6.88	1.94	3.56	1.29	18.3	5.2	1.20	.281	4.66	97	4.23	90	8.89	13.4
8	Jim Merritt J. Merritt	4.37	251.0	1969	CIN	42	17	9	.654	36	144	8	1	0	269	122	127	33	61	5	2	8	1,072	3	5.16	2.19	2.36	1.18	13.4	5.7	1.31	.285	4.55	114	3.85	105	9.65	-3.5
9	Mike Smithson M. Smithson	4.34	257.0	1985	MIN	37	15	14	.517	37	127	8	3	0	264	124	134	25	78	15	0	1	1,088	6	4.45	2.73	1.63	0.88	11.7	7.2	1.33	.284	4.69	102	4.04	99	9.25	1.3
10	Joe Coleman J. Coleman	4.32	285.2	1974	DET	41	14	12	.538	41	177	11	2	0	272	137	160	30	158	12	0	13	1,262	13	5.58	4.98	1.12	0.95	14.0	12.5	1.51	.273	5.04	114	4.48	120	8.57	-22.6
11	Early Wynn E. Wynn	4.31	263.0	1957	CLE	40	14	17	.452	37	184	13	1	1	270	126	139	32	104	5	2	7	1,146	0	6.30	3.56	1.77	1.10	16.1	9.1	1.42	.290	4.76	115	3.88	102	9.24	-2.4
12	Mike Moore M. Moore	4.30	266.0	1986	SEA	38	11	13	.458	37	146	11	1	1	279	127	141	28	94	12	1	6	1,145	4	4.94	3.18	1.55	0.95	12.8	8.2	1.40	.290	4.77	100	4.23	97	9.44	4.5
13	Robin Roberts R. Roberts	4.27	257.1	1959	PHI	35	15	17	.469	35	137	19	2	0	267	122	137	34	35	5	0	4	1,075	1	4.79	1.22	3.91	1.19	12.7	3.3	1.17	.270	4.79	108	3.66	95	9.34	5.9
14	Dave Lemanczyk D. Lemanczyk	4.25	252.0	1977	TOR	34	13	16	.448	34	105	11	0	0	278	119	143	20	87	4	0	6	1,092	20	3.75	3.11	1.21	0.71	9.6	8.0	1.45	.295	5.11	101	4.01	97	9.93	3.8
15	Pedro Ramos P. Ramos	4.23	259.1	1958	WSH	43	14	18	.438	37	132	10	4	3	277	122	133	38	77	5	5	9	1,112	4	4.58	2.67	1.71	1.32	11.9	6.9	1.37	.278	4.62	110	4.31	111	9.61	-12
16	Jim Perry J. Perry	4.23	270.0	1971	MIN	40	17	17	.500	39	126	8	0	1	263	127	135	39	102	5	1	10	1,146	5	4.20	3.40	1.24	1.30	11.0	8.9	1.35	.256	4.50	120	4.58	126	8.77	-27.8
17	Dennis Martinez D. Martinez	4.21	252.0	1982	BAL	40	16	12	.571	39	111	10	2	0	262	118	123	30	87	7	0	2	1,093	7	3.96	3.11	1.28	1.07	10.2	8.0	1.38	.270	4.39	106	4.49	110	9.36	-11
18	Jack Morris J. Morris	4.18	250.0	1980	DET	36	16	15	.516	36	112	11	2	0	252	116	125	20	87	4	0	5	1,074	6	4.03	3.13	1.29	0.72	10.4	8.1	1.36	.273	4.50	102	3.98	94	9.07	7.2
19	Dave Goltz D. Goltz	4.16	250.2	1979	MIN	36	14	13	.519	35	132	12	1	0	282	116	124	22	69	1	1	3	1,061	5	4.74	2.48	1.91	0.79	12.4	6.5	1.40	.311	4.45	96	3.65	87	10.13	15
20	Mickey Lolich M. Lolich	4.15	308.0	1974	DET	41	16	21	.432	41	202	27	3	0	310	142	155	38	78	3	0	11	1,263	10	5.90	2.28	2.59	1.11	16.0	6.2	1.26	.289	4.53	109	3.65	98	9.06	3.2
21	Carl Erskine C. Erskine	4.15	260.1	1954	BKN	38	18	15	.545	37	166	12	2	1	239	120	128	31	92	4	1		1,098	6	5.74	3.18	1.80	1.07	15.1	8.4	1.27	.258	4.43	100	3.78	91	8.26	10.4
22	Murry Dickson M. Dickson	4.14	252.1	1948	SLN	42	12	16	.429	29	113	11	1	1	257	116	121	39	85	0	8		1,064	1	4.03	3.03	1.33	1.39	10.6	8.0	1.36	.264	4.32	102	4.78	115	9.17	-16.3
23	Tony Cloninger T. Cloninger	4.12	257.2	1966	ATL	39	14	11	.560	38	178	11	1	1	253	118	134	29	116	6	1	9	1,132	27	6.22	4.05	1.53	1.01	15.7	10.2	1.43	.279	4.68	113	4.06	115	8.84	-15
24	Mike Flanagan M. Flanagan	4.12	251.1	1980	BAL	37	16	13	.552	37	128	12	2	0	278	115	121	27	71	2	0	3	1,065	12	4.58	2.54	1.80	0.97	12.0	6.7	1.39	.300	4.33	105	3.99	101	9.95	-1.6
25	Wilbur Wood W. Wood	4.11	291.1	1975	CWS	43	16	20	.444	43	140	14	2	0	309	133	148	26	92	5	0	5	1,245	6	4.32	2.84	1.52	0.80	11.2	7.4	1.38	.288	4.57	107	3.77	100	9.55	-0.3