lowest era by a starting pitcher since 1940 to 1960 with at least 20 games started in a single season

Between the 1940 and 1960 seasons, Spud Chandler had the best ERA by a starting pitcher with 20+ starts in a season, with an ERA of 1.64 in 1943.

	NAME	ERA	GS	SEASON	TM	G	W	L	W%	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	H/9
1	Spud Chandler S. Chandler	1.64	30	1943	NYY	30	20	4	.833	134	20	5	0	253.0	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
2	Mort Cooper M. Cooper	1.73	35	1942	SLN	35	22	6	.786	151	22	10	0	276.0	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
3	Hal Newhouser H. Newhouser	1.75	36	1945	DET	36	24	9	.727	207	29	8	0	308.1	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
4	Hal Newhouser H. Newhouser	1.87	34	1946	DET	34	26	8	.765	268	29	6	0	289.0	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
5	Max Lanier M. Lanier	1.94	25	1943	SLN	25	13	7	.650	110	14	2	0	199.0	185	43	60	3	72	1	0		825	0	4.97	3.26	1.53	0.14	13.3	8.7	1.29	.285	2.71	8.37
6	Al Benton A. Benton	1.99	27	1945	DET	27	13	7	.650	72	12	5	0	181.0	164	40	65	7	61	2	0		764	3	3.58	3.03	1.18	0.35	9.4	8.0	1.24	.252	3.23	8.15
7	Whitey Ford W. Ford	2.03	29	1958	NYY	29	14	7	.667	145	15	7	0	217.2	173	49	62	14	61	3	0	4	866	5	6.00	2.52	2.38	0.58	16.7	7.0	1.08	.247	2.56	7.15
8	Elmer Riddle E. Riddle	2.07	22	1941	CIN	22	16	4	.800	59	15	4	0	182.1	156	42	56	7	44	4	0		742	1	2.91	2.17	1.34	0.35	8.0	5.9	1.10	.237	2.76	7.70
9	Howie Pollet H. Pollet	2.09	32	1946	SLN	32	19	10	.655	106	22	4	0	249.2	215	58	80	12	80	4	0		1,017	1	3.82	2.88	1.33	0.43	10.4	7.9	1.18	.249	2.88	7.75
10	Billy Pierce B. Pierce	2.10	26	1955	CWS	26	13	10	.565	140	16	6	0	189.0	153	44	49	16	56	3	0	3	772	4	6.67	2.67	2.50	0.76	18.1	7.3	1.11	.246	2.33	7.29
11	Ted Lyons T. Lyons	2.10	20	1942	CWS	20	14	6	.700	50	20	1	0	180.1	167	42	52	11	26	2	0		720	3	2.50	1.30	1.92	0.55	6.9	3.6	1.07	.247	2.60	8.33
12	Bob Feller B. Feller	2.11	42	1946	CLE	42	26	15	.634	333	36	10	0	359.0	271	84	95	11	148	3	0		1,462	2	8.35	3.71	2.25	0.28	22.8	10.1	1.17	.269	2.38	6.79
13	Spud Chandler S. Chandler	2.11	32	1946	NYY	32	20	8	.714	138	20	6	0	256.1	200	60	71	7	90	1	0		1,027	3	4.85	3.16	1.53	0.25	13.4	8.8	1.13	.244	2.49	7.02
14	Warren Spahn W. Spahn	2.14	32	1953	MIL	32	23	7	.767	144	24	5	0	260.1	207	62	75	14	70	1	0		1,035	3	4.98	2.42	2.06	0.48	13.9	6.8	1.06	.239	2.59	7.16
15	Allie Reynolds A. Reynolds	2.14	29	1952	NYY	29	20	8	.714	157	24	6	0	235.0	187	56	70	10	96	7	0		964	3	6.01	3.68	1.64	0.38	16.3	10.0	1.20	.255	2.68	7.16
16	Johnny Sain J. Sain	2.16	34	1946	BSN	34	20	14	.588	127	24	3	0	262.2	220	63	78	8	86	2	0		1,074	3	4.35	2.95	1.48	0.27	11.8	8.0	1.16	.249	2.67	7.54
17	Dizzy Trout D. Trout	2.16	40	1944	DET	40	24	14	.632	141	33	7	0	337.2	303	81	102	8	80	4	0		1,363	1	3.76	2.13	1.76	0.21	10.3	5.9	1.13	.261	2.72	8.08
18	Johnny Beazley J. Beazley	2.17	23	1942	SLN	23	15	3	.833	67	13	3	0	178.2	158	43	54	3	64	1	0		743	5	3.38	3.22	1.05	0.15	9.0	8.6	1.24	.255	2.72	7.96
19	Dutch Leonard D. Leonard	2.17	29	1945	WSH	29	16	7	.696	94	12	4	0	211.2	204	51	72	5	33	2	0		867	2	4.00	1.40	2.85	0.21	10.8	3.8	1.12	.271	3.06	8.67
20	Hoyt Wilhelm H. Wilhelm	2.18	27	1959	BAL	27	15	9	.625	125	13	3	0	210.2	168	51	60	12	71	10	0	2	846	5	5.34	3.03	1.76	0.51	14.8	8.4	1.13	.248	2.56	7.18
21	Roger Wolff R. Wolff	2.19	29	1945	WSH	29	20	8	.714	102	21	4	0	238.0	194	58	66	7	49	1	0		952	1	3.86	1.85	2.08	0.26	10.7	5.1	1.02	.236	2.50	7.34
22	Bill Bevens B. Bevens	2.23	31	1946	NYY	31	16	13	.552	120	18	3	0	249.2	213	62	73	11	78	1	0		1,014	0	4.33	2.81	1.54	0.40	11.8	7.7	1.17	.251	2.63	7.68
23	Tiny Bonham T. Bonham	2.26	26	1943	NYY	26	15	8	.652	70	17	4	0	223.1	195	56	62	12	48	1	0		894	0	2.82	1.93	1.46	0.48	7.8	5.4	1.09	.240	2.50	7.86
24	Harry Brecheen H. Brecheen	2.28	30	1948	SLN	30	20	7	.741	143	21	7	0	228.2	192	58	62	6	48	3	0		913	2	5.63	1.89	2.98	0.24	15.7	5.3	1.05	.261	2.44	7.56
25	Whit Wyatt W. Wyatt	2.28	35	1941	BKN	35	22	9	.710	171	23	7	0	279.2	212	71	84	9	81	2	0		1,113	2	5.50	2.61	2.11	0.29	15.4	7.3	1.05	.239	2.70	6.82