pitchers best era in a season, min 200 ip, included postseason, since 1920

Since 1920, Bob Gibson has the best ERA with 200.0+ innings pitched in a combined regular-season and postseason, with an ERA of 1.17 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	ERA-	FIP	FIP-	H/9	PRAA
1	Bob Gibson B. Gibson	1.17	331.2	1968	STL	37	24	10	.706	37	303	31	14	0	216	43	54	12	66	7	0	7	1,262	4	8.22	1.79	4.59	0.33	24.0	5.2	0.85	.233	1.47	35	1.63	58	5.86	34.8
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	44	2.12	59	6.44	45.6
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	37	2.39	55	6.68	43.7
4	Carl Hubbell C. Hubbell	1.56	328.2	1933	NYG	47	25	12	.676	35	171	24	10	5	269	57	72	6	53	3	11		1,286	3	4.68	1.45	3.23	0.16	13.3	4.1	0.98	.250	1.97	49	2.37	69	7.37	31.1
5	Spud Chandler S. Chandler	1.56	271.0	1943	NYY	32	22	4	.846	32	144	22	6	0	214	47	64	5	57	4	0		1,061	3	4.78	1.89	2.53	0.17	13.6	5.4	1.00	.246	2.13	46	2.15	64	7.11	29.8
6	Luis Tiant L. Tiant	1.60	258.1	1968	CLE	34	21	9	.700	32	264	19	9	0	152	46	53	16	73	4	0	4	987	3	9.20	2.54	3.62	0.56	26.7	7.4	0.87	.216	1.85	53	2.04	64	5.30	33
7	Dean Chance D. Chance	1.65	278.1	1964	LAA	46	20	9	.690	35	207	15	11	4	194	51	56	7	86	2	7	9	1,093	9	6.69	2.78	2.41	0.23	18.9	7.9	1.01	.236	1.81	48	2.39	67	6.27	37.9
8	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	44	1.98	50	6.30	49
9	Ron Guidry R. Guidry	1.70	290.2	1978	NYY	37	27	3	.900	37	259	17	9	0	202	55	63	13	80	1	0	1	1,126	7	8.02	2.48	3.24	0.40	23.0	7.1	0.97	.245	1.95	45	2.05	55	6.25	48.5
10	Sandy Koufax S. Koufax	1.72	329.0	1966	LAD	42	27	10	.730	42	319	27	5	0	247	63	78	19	79	0	0	5	1,300	7	8.73	2.16	4.04	0.52	24.5	6.1	0.99	.258	2.13	52	2.03	64	6.76	41.8
11	Sandy Koufax S. Koufax	1.74	223.0	1964	LAD	29	19	5	.792	28	223	15	7	1	154	43	49	13	53	0	1	5	870	9	9.00	2.14	4.21	0.52	25.6	6.1	0.93	.243	1.98	53	2.08	67	6.22	27.1
12	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	35	2.16	47	5.31	61.5
13	Zack Greinke Z. Greinke	1.75	236.1	2015	LAD	34	20	4	.833	34	217	1	0	0	159	46	48	17	41	5	0	1	893	7	8.26	1.56	5.29	0.65	24.3	4.6	0.85	.232	1.83	42	2.59	68	6.06	26.2
14	Tom Seaver T. Seaver	1.76	286.1	1971	NYM	36	20	10	.667	35	289	21	4	0	210	56	61	18	61	4	1	2	1,103	5	9.08	1.92	4.74	0.57	26.2	5.5	0.95	.263	1.92	52	1.93	58	6.60	44.5
15	Sam McDowell S. McDowell	1.81	269.0	1968	CLE	38	15	14	.517	37	283	11	3	0	181	54	78	13	110	10	0	9	1,098	7	9.47	3.68	2.57	0.43	25.8	10.0	1.08	.246	2.61	59	2.25	70	6.06	28.3
16	Greg Maddux G. Maddux	1.82	247.2	1995	ATL	33	22	3	.880	33	200	11	3	0	182	50	53	12	30	6	0	5	937	2	7.27	1.09	6.67	0.44	21.3	3.2	0.86	.247	1.93	33	1.91	44	6.61	46.9
17	Sandy Koufax S. Koufax	1.86	329.0	1963	LAD	42	27	5	.844	42	329	22	11	0	226	68	71	20	61	3	0	7	1,279	6	9.00	1.67	5.39	0.55	25.7	4.8	0.87	.238	1.94	59	1.75	58	6.18	41.9
18	Phil Niekro P. Niekro	1.87	207.0	1967	ATL	46	11	9	.550	20	129	10	1	9	164	43	64	9	55	7	20	3	827	19	5.61	2.39	2.35	0.39	15.6	6.7	1.06	.247	2.78	55	2.76	84	7.13	12.2
19	Joe Horlen J. Horlen	1.88	210.2	1964	CWS	32	13	9	.591	28	138	9	2	0	142	44	54	11	55	4	2	4	815	4	5.90	2.35	2.51	0.47	16.9	6.7	0.94	.216	2.31	55	2.81	79	6.07	18.3
20	Max Lanier M. Lanier	1.89	228.2	1943	SLN	35	15	8	.652	27	136	14	2	3	208	48	67	4	78	2	5		944	1	5.35	3.07	1.74	0.16	14.4	8.3	1.25	.282	2.64	52	2.36	70	8.19	19.4
21	Kevin Brown K. Brown	1.89	233.0	1996	FLA	32	17	11	.607	32	159	5	3	0	187	49	60	8	33	16	0	2	906	6	6.14	1.27	4.82	0.31	17.5	3.6	0.94	.259	2.32	46	2.88	68	7.22	35.8
22	Pedro Martinez P. Martinez	1.90	241.1	1997	MON	31	17	8	.680	31	305	13	4	0	158	51	65	16	67	9	0	5	947	3	11.37	2.50	4.55	0.60	32.2	7.1	0.93	.258	2.42	45	2.38	57	5.89	49
23	Grover Alexander G. Alexander	1.91	363.1	1920	CHC	46	27	14	.659	40	173	33	7	5	335	77	96	8	69	1	6		1,447	3	4.29	1.71	2.51	0.20	12.0	4.8	1.11	.273	2.38	61	2.66	81	8.30	25
24	Wilbur Wood W. Wood	1.91	334.0	1971	CWS	44	22	13	.629	42	210	22	7	1	272	71	95	21	62	7	2	2	1,316	6	5.66	1.67	3.39	0.57	16.0	4.7	1.00	.247	2.56	53	2.63	71	7.33	38.9
25	Pedro Martinez P. Martinez	1.91	230.1	1999	BOS	34	25	4	.862	31	336	5	1	0	165	49	56	9	43	9	2	1	897	6	13.13	1.68	7.81	0.35	37.5	4.8	0.90	.312	2.19	39	1.28	28	6.45	79.4