best era with a minimum of 1000 innings pitched as a pitcher in the 1930s

Between the 1930 and 1939 seasons, Carl Hubbell had the lowest ERA when pitching at least 1000 innings, with an ERA of 2.71.

	NAME	ERA	IP	G	W	L	W%	GS	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Carl Hubbell C. Hubbell	2.71	2596.2	383	188	104	.644	303	1,281	197	31	30	2,437	782	917	147	467	39	66	10,584	34	4.44	1.62	2.74	0.51	12.1	4.4	1.12	.265	3.18	69	3.42	86	8.45	163.9
2	Lefty Grove L. Grove	2.91	2399.0	351	199	76	.724	268	1,313	197	26	31	2,344	776	907	93	639	22	72	10,054	16	4.93	2.40	2.05	0.35	13.1	6.4	1.24	.282	3.40	62	3.33	73	8.79	326
3	Dizzy Dean D. Dean	2.96	1908.1	305	147	80	.648	219	1,144	151	26	31	1,845	628	736	91	432	27	76	7,903	12	5.40	2.04	2.65	0.43	14.5	5.5	1.19	.282	3.47	75	3.19	78	8.70	192.3
4	Bill Lee B. Lee	3.21	1570.2	240	106	70	.602	201	640	110	23	8	1,562	560	645	84	483	13	24	6,590	31	3.67	2.77	1.33	0.48	9.7	7.3	1.30	.275	3.70	82	3.88	96	8.95	30.1
5	Lon Warneke L. Warneke	3.23	2021.0	318	144	85	.629	247	877	146	24	11	1,993	725	845	126	555	21	46	8,471	45	3.91	2.47	1.58	0.56	10.4	6.6	1.26	.271	3.76	83	3.83	96	8.88	35.3
6	Lefty Gomez L. Gomez	3.24	2234.2	322	165	89	.650	278	1,337	163	26	10	2,031	804	949	122	904	15	28	9,505	30	5.38	3.64	1.48	0.49	14.1	9.5	1.31	.268	3.82	75	3.79	90	8.18	98
7	Hal Schumacher H. Schumacher	3.38	1736.2	274	117	81	.591	231	623	99	19	4	1,716	652	775	95	593	16	25	7,376	44	3.23	3.07	1.05	0.49	8.4	8.0	1.33	.268	4.02	89	4.07	104	8.89	-34
8	Larry French L. French	3.42	2481.2	430	156	134	.538	304	901	161	32	14	2,701	942	1,136	130	610	27	77	10,605	29	3.27	2.21	1.48	0.47	8.5	5.8	1.33	.288	4.12	86	3.81	93	9.80	77.7
9	Van Mungo V. Mungo	3.42	1715.1	275	101	99	.505	215	1,022	114	16	13	1,593	652	771	73	685	23	48	7,313	44	5.36	3.59	1.49	0.38	14.0	9.4	1.33	.276	4.05	89	3.65	92	8.36	63.8
10	Charlie Root C. Root	3.50	1829.1	377	114	89	.562	187	818	96	10	30	1,870	711	812	114	466	47	123	7,716	15	4.02	2.29	1.76	0.56	10.6	6.0	1.28	.280	3.99	89	3.83	95	9.20	43.2
11	Paul Derringer P. Derringer	3.50	2343.2	375	148	137	.519	285	1,018	163	23	18	2,584	911	1,083	93	481	27	68	9,948	40	3.91	1.85	2.12	0.36	10.2	4.8	1.31	.299	4.16	92	3.33	85	9.92	156.7
12	Curt Davis C. Davis	3.50	1263.2	246	92	73	.558	151	381	79	11	19	1,368	492	579	79	262	25	71	5,317	12	2.71	1.87	1.45	0.56	7.2	4.9	1.29	.282	4.12	83	3.96	91	9.74	59.2
13	Freddie Fitzsimmons F. Fitzsimmons	3.54	1937.2	304	120	96	.556	260	539	109	18	7	2,021	763	912	119	499	15	33	8,171	40	2.50	2.32	1.08	0.55	6.6	6.1	1.30	.272	4.24	91	4.12	103	9.39	-25.8
14	Bill Swift B. Swift	3.57	1555.0	305	91	79	.535	164	592	78	7	18	1,596	616	712	94	310	30	106	6,519	9	3.43	1.79	1.91	0.54	9.1	4.8	1.23	.273	4.12	92	3.72	93	9.24	50.5
15	Ed Brandt E. Brandt	3.57	1875.1	314	104	112	.481	225	743	125	17	17	1,912	744	832	100	586	23	66	7,959	18	3.57	2.81	1.27	0.48	9.3	7.4	1.33	.278	3.99	94	3.96	102	9.18	-22.6
16	Bill Walker B. Walker	3.57	1231.2	218	80	64	.556	161	518	69	14	10	1,303	489	591	79	445	23	33	5,384	14	3.79	3.25	1.16	0.58	9.6	8.3	1.42	.283	4.32	88	4.27	103	9.52	-17
17	Red Ruffing R. Ruffing	3.59	2439.0	334	175	98	.641	298	1,260	201	28	9	2,327	972	1,123	150	858	24	31	10,351	24	4.65	3.17	1.47	0.55	12.2	8.3	1.31	.270	4.14	83	3.93	93	8.59	77.1
18	Johnny Allen J. Allen	3.73	1406.1	212	108	45	.706	182	838	94	12	4	1,323	583	654	66	547	27	22	5,970	50	5.36	3.50	1.53	0.42	14.0	9.2	1.33	.280	4.19	84	3.67	85	8.47	102.6
19	Ben Cantwell B. Cantwell	3.74	1249.0	255	67	91	.424	130	299	63	6	18	1,311	519	598	70	288	17	93	5,265	14	2.15	2.08	1.04	0.50	5.7	5.5	1.28	.270	4.31	99	4.08	106	9.45	-40.4
20	Mel Harder M. Harder	3.74	2326.0	385	158	123	.562	285	813	134	16	22	2,557	967	1,168	101	692	41	71	10,102	22	3.15	2.68	1.17	0.39	8.0	6.9	1.40	.290	4.52	81	3.88	86	9.89	163.6
21	Tom Zachary T. Zachary	3.74	1038.1	178	55	64	.462	136	284	59	9	12	1,190	432	500	41	278	7	25	4,492	12	2.46	2.41	1.02	0.36	6.3	6.2	1.41	.296	4.33	96	3.90	98	10.31	6
22	Tommy Bridges T. Bridges	3.76	2083.0	309	150	102	.595	266	1,207	156	25	8	2,015	870	1,021	138	902	29	32	9,033	41	5.22	3.90	1.34	0.60	13.4	10.0	1.40	.278	4.41	81	4.10	91	8.71	93.4
23	Waite Hoyt W. Hoyt	3.76	1310.0	281	72	74	.493	134	428	60	8	23	1,474	548	658	65	312	16	90	5,643	13	2.94	2.14	1.37	0.45	7.6	5.5	1.36	.292	4.52	91	3.87	93	10.13	42
24	Red Lucas R. Lucas	3.77	1622.0	231	98	94	.510	213	377	136	11	1	1,792	679	782	96	264	13	14	6,818	5	2.09	1.46	1.43	0.53	5.5	3.9	1.27	.279	4.34	96	3.92	97	9.94	17.2
25	Bucky Walters B. Walters	3.80	1232.1	181	76	70	.521	160	430	89	14	1	1,261	521	615	63	488	27	12	5,343	34	3.14	3.56	0.88	0.46	8.0	9.1	1.42	.276	4.49	91	4.27	99	9.21	9.7