lowest career era by a starting pitcher with a minimum of 200 ip in a season since 1920

Since 1920, Bob Gibson has the lowest ERA by a starting pitcher with 200.0+ innings pitched in a season, with an ERA of 1.12 in 1968.

	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	H/9
1	Bob Gibson B. Gibson	1.12	304.2	1968	STL	34	22	9	.710	34	268	28	13	0	198	38	49	11	62	7	0	6	1,161	4	7.92	1.83	4.32	0.32	23.1	5.3	0.85	.230	1.45	5.85
2	Dwight Gooden D. Gooden	1.53	276.2	1985	NYM	35	24	4	.857	35	268	16	8	0	198	47	51	13	69	2	0	4	1,065	6	8.72	2.24	3.88	0.42	25.2	6.5	0.97	.259	1.66	6.44
3	Greg Maddux G. Maddux	1.56	202.0	1994	ATL	25	16	6	.727	25	156	10	3	0	150	35	44	4	31	6	0	3	774	3	6.95	1.38	5.03	0.18	20.2	4.0	0.90	.253	1.96	6.68
4	Luis Tiant L. Tiant	1.57	253.0	1968	CLE	32	21	8	.724	32	256	19	9	0	143	44	51	15	70	4	0	3	960	3	9.11	2.49	3.66	0.53	26.7	7.3	0.84	.208	1.81	5.09
5	Dean Chance D. Chance	1.57	257.1	1964	LAA	35	18	8	.692	35	190	15	11	0	180	45	48	7	78	2	0	8	1,009	8	6.65	2.73	2.44	0.24	18.8	7.7	1.00	.236	1.68	6.30
6	Greg Maddux G. Maddux	1.63	209.2	1995	ATL	28	19	2	.905	28	181	10	3	0	147	38	39	8	23	4	0	3	785	1	7.77	0.99	7.87	0.34	23.1	2.9	0.81	.244	1.67	6.31
7	Spud Chandler S. Chandler	1.64	253.0	1943	NYY	30	20	4	.833	30	134	20	5	0	197	46	62	5	54	4	0		988	3	4.77	1.92	2.48	0.18	13.6	5.5	0.99	.243	2.21	7.01
8	Zack Greinke Z. Greinke	1.66	222.2	2015	LAD	32	19	3	.864	32	200	1	0	0	148	41	43	14	40	5	0	1	843	7	8.08	1.62	5.00	0.57	23.7	4.7	0.84	.229	1.74	5.98
9	Jacob deGrom J. deGrom	1.70	217.0	2018	NYM	32	10	9	.526	32	269	1	0	0	152	41	48	10	46	5	0	3	835	2	11.16	1.91	5.85	0.41	32.2	5.5	0.91	.281	1.99	6.30
10	Tom Seaver T. Seaver	1.70	285.2	1971	NYM	35	20	9	.690	35	288	21	4	0	207	54	59	17	61	4	0	2	1,098	4	9.07	1.92	4.72	0.54	26.2	5.6	0.94	.261	1.86	6.52
11	Sandy Koufax S. Koufax	1.73	323.0	1966	LAD	41	27	9	.750	41	317	27	5	0	241	62	74	19	77	0	0	4	1,274	7	8.83	2.15	4.12	0.53	24.9	6.0	0.98	.258	2.06	6.72
12	Mort Cooper M. Cooper	1.73	276.0	1942	SLN	35	22	6	.786	35	151	22	10	0	203	53	71	8	67	5	0		1,086	5	4.92	2.18	2.25	0.26	13.9	6.2	0.98	.228	2.32	6.62
13	Pedro Martinez P. Martinez	1.74	217.0	2000	BOS	29	18	6	.750	29	284	7	4	0	128	42	44	17	32	14	0	0	817	1	11.78	1.33	8.88	0.71	34.8	3.9	0.74	.236	1.82	5.31
14	Ron Guidry R. Guidry	1.74	273.2	1978	NYY	35	25	3	.893	35	248	16	9	0	187	53	61	13	72	1	0	1	1,057	7	8.16	2.37	3.44	0.43	23.5	6.8	0.95	.241	2.01	6.15
15	Hal Newhouser H. Newhouser	1.75	308.1	1945	DET	36	24	9	.727	36	207	29	8	0	234	60	70	5	106	0	0		1,237	9	6.04	3.09	1.95	0.15	16.7	8.6	1.10	.249	2.04	6.83
16	Sandy Koufax S. Koufax	1.76	220.0	1964	LAD	28	19	5	.792	28	221	15	7	0	153	43	49	13	53	0	0	5	860	9	9.04	2.17	4.17	0.53	25.7	6.2	0.94	.244	2.00	6.26
17	Jake Arrieta J. Arrieta	1.77	229.0	2015	CHC	33	22	6	.786	33	236	4	3	0	150	45	52	10	48	6	0	2	870	6	9.28	1.89	4.92	0.39	27.1	5.5	0.86	.246	2.04	5.90
18	Carl Hubbell C. Hubbell	1.77	274.0	1933	NYG	33	20	11	.645	33	139	22	10	0	231	54	66	6	42	3	0		1,074	3	4.57	1.38	3.31	0.20	12.9	3.9	1.00	.255	2.17	7.59
19	Vida Blue V. Blue	1.82	312.0	1971	OAK	39	24	8	.750	39	301	24	8	0	209	63	73	19	88	4	0	3	1,207	10	8.68	2.54	3.42	0.55	24.9	7.3	0.95	.239	2.11	6.03
20	Sam McDowell S. McDowell	1.82	267.0	1968	CLE	37	15	14	.517	37	281	11	3	0	180	54	78	13	109	10	0	9	1,091	7	9.47	3.67	2.58	0.44	25.8	10.0	1.08	.246	2.63	6.07
21	Joe Horlen J. Horlen	1.83	201.2	1964	CWS	28	12	9	.571	28	134	9	2	0	130	41	50	10	52	4	0	4	776	3	5.98	2.32	2.58	0.45	17.3	6.7	0.90	.208	2.23	5.80
22	Clayton Kershaw C. Kershaw	1.83	236.0	2013	LAD	33	16	9	.640	33	232	3	2	0	164	48	55	11	52	3	0	2	908	12	8.85	1.98	4.46	0.42	25.6	5.7	0.92	.251	2.10	6.25
23	Hal Newhouser H. Newhouser	1.87	289.0	1946	DET	34	26	8	.765	34	268	29	6	0	212	60	74	8	94	1	0		1,158	8	8.35	2.93	2.85	0.25	23.1	8.1	1.06	.259	2.30	6.60
24	Roger Clemens R. Clemens	1.87	211.1	2005	HOU	32	13	8	.619	32	185	1	0	0	151	44	51	11	62	3	0	5	838	3	7.88	2.64	2.98	0.47	22.1	7.4	1.01	.243	2.17	6.43
25	Sandy Koufax S. Koufax	1.88	311.0	1963	LAD	40	25	5	.833	40	306	20	11	0	214	65	68	18	58	3	0	7	1,210	6	8.86	1.68	5.28	0.52	25.3	4.8	0.87	.238	1.97	6.19