Carlos Moore had the best ERA with 10.0+ innings pitched in 1930, with an ERA of 2.31 in his rookie season.

Interpreted as:

lowest era by a player in 1930 minimum 10 ip

	NAME	ERA	IP	SEASON	TM	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	Carlos Moore C. Moore	2.31	11.2	1930	WSH	4	0	0		0	2	0	0	0	9	3	3	0	4	0	4	47	0	1.54	3.09	0.50	0.00	4.3	8.5	1.11	.220	2.31	50	4.19	90	6.94	0.6
2	Lefty Grove L. Grove	2.54	291.0	1930	PHA	50	28	5	.848	32	209	22	2	9	273	82	101	8	60	5	17	1,191	2	6.46	1.86	3.48	0.25	17.5	5.0	1.14	.292	3.12	53	3.09	64	8.44	55.6
3	Dazzy Vance D. Vance	2.61	258.2	1930	BKN	35	17	15	.531	31	173	20	4	1	241	75	97	15	55	5	3	1,061	4	6.02	1.91	3.15	0.52	16.3	5.2	1.14	.278	3.38	54	3.61	75	8.39	35
4	John Milligan J. Milligan	3.18	28.1	1930	PHN	9	1	2	.333	2	7	1	0	0	26	10	16	0	21	2	4	129	1	2.22	6.67	0.33	0.00	5.4	16.3	1.66	.263	5.08	58	5.44	101	8.26	0.2
5	Ad Liska A. Liska	3.29	150.2	1930	WSH	32	9	7	.563	16	40	7	1	1	140	55	69	6	71	5	8	648	0	2.39	4.24	0.56	0.36	6.2	11.0	1.40	.255	4.12	71	5.00	108	8.36	-6.1
6	Wes Ferrell W. Ferrell	3.31	296.2	1930	CLE	43	25	13	.658	35	143	25	1	3	299	109	141	14	106	0	8	1,274	5	4.34	3.22	1.35	0.42	11.2	8.3	1.37	.282	4.28	68	4.22	86	9.07	23.6
7	Sloppy Thurston S. Thurston	3.40	106.0	1930	BKN	24	6	4	.600	11	26	5	2	1	110	40	46	4	17	0	11	437	1	2.21	1.44	1.53	0.34	5.9	3.9	1.20	.272	3.91	70	3.98	83	9.34	9.9
8	Ken Ash K. Ash	3.43	39.1	1930	CIN	16	2	0	1.000	1	15	1	0	1	37	15	22	1	16	0	12	160	0	3.43	3.66	0.94	0.23	9.4	10.0	1.35	.281	5.03	72	4.29	91	8.47	1.8
9	Lefty Stewart L. Stewart	3.45	271.0	1930	SLA	35	20	12	.625	33	79	23	1	0	281	104	119	21	70	1	2	1,139	0	2.62	2.32	1.13	0.70	6.9	6.1	1.30	.269	3.95	72	4.71	97	9.33	4.5
10	Whit Wyatt W. Wyatt	3.57	85.2	1930	DET	21	4	5	.444	7	68	2	0	2	76	34	41	6	35	3	12	363	2	7.14	3.68	1.94	0.63	18.7	9.6	1.30	.279	4.31	75	4.15	87	7.98	6.1
11	Jim Moore J. Moore	3.60	40.0	1930	CWS	9	2	1	.667	5	11	2	0	1	42	16	18	0	12	0	2	177	0	2.47	2.70	0.92	0.00	6.2	6.8	1.35	.273	4.05	80	3.85	85	9.45	3.1
12	Bobby Burke B. Burke	3.63	74.1	1930	WSH	24	3	4	.429	4	35	2	0	3	62	30	41	2	29	3	12	312	2	4.24	3.51	1.21	0.24	11.2	9.3	1.22	.247	4.96	79	4.20	90	7.51	3.7
13	George Uhle G. Uhle	3.65	239.0	1930	DET	33	12	12	.500	29	117	18	1	3	239	97	110	18	75	5	4	1,005	3	4.41	2.82	1.56	0.68	11.6	7.5	1.31	.280	4.14	77	4.50	94	9.00	7.9
14	Bump Hadley B. Hadley	3.73	260.1	1930	WSH	42	15	11	.577	34	162	15	1	3	242	108	123	6	105	6	7	1,113	4	5.60	3.63	1.54	0.21	14.6	9.4	1.33	.283	4.25	81	3.83	82	8.37	23.6
15	Ted Lyons T. Lyons	3.78	297.2	1930	CWS	42	22	15	.595	36	69	29	1	2	331	125	160	12	57	2	6	1,258	2	2.09	1.72	1.21	0.36	5.5	4.5	1.30	.285	4.84	84	4.16	91	10.01	12.8
16	Vic Sorrell V. Sorrell	3.86	233.1	1930	DET	35	16	11	.593	30	97	14	2	2	245	100	116	12	106	0	5	1,021	4	3.74	4.09	0.92	0.46	9.5	10.4	1.50	.289	4.47	81	4.70	98	9.45	2.7
17	Pat Caraway P. Caraway	3.86	193.1	1930	CWS	38	10	10	.500	21	83	9	1	1	194	83	96	12	57	3	12	812	0	3.86	2.65	1.46	0.56	10.2	7.0	1.30	.277	4.47	86	4.38	96	9.03	3.4
18	Carl Hubbell C. Hubbell	3.87	241.2	1930	NYG	37	17	12	.586	32	117	17	3	2	263	104	120	11	58	11	4	1,037	3	4.36	2.16	2.02	0.41	11.3	5.6	1.33	.300	4.47	79	3.98	83	9.79	22.6
19	Alvin Crowder A. Crowder	3.89	279.2	1930	TOT	40	18	16	.529	35	107	25	1	2	276	121	133	17	96	2	4	1,188	1	3.44	3.09	1.11	0.55	9.0	8.1	1.33	.268	4.28	84	4.58	97	8.88	4.1
20	Hi Bell H. Bell	3.90	115.1	1930	SLN	39	4	3	.571	9	42	2	0	8	143	50	65	4	23	2	17	512	1	3.28	1.79	1.83	0.31	8.2	4.5	1.44	.315	5.07	78	3.87	78	11.16	14
21	Milt Gaston M. Gaston	3.92	273.0	1930	BSA	38	13	20	.394	34	99	21	2	2	272	119	138	15	98	0	4	1,175	11	3.26	3.23	1.01	0.49	8.4	8.3	1.36	.267	4.55	86	4.57	99	8.97	0.6
22	Bill Walker B. Walker	3.93	245.1	1930	NYG	39	17	15	.531	34	105	13	2	1	258	107	133	19	88	7	4	1,075	2	3.85	3.23	1.19	0.70	9.8	8.2	1.41	.279	4.88	81	4.81	100	9.46	-0.2
23	Pat Malone P. Malone	3.94	271.2	1930	CHC	45	20	9	.690	35	142	22	1	5	290	119	145	14	96	6	8	1,197	4	4.70	3.18	1.48	0.46	11.9	8.0	1.42	.294	4.80	80	4.25	87	9.61	18.7
24	Jumbo Elliott J. Elliott	3.95	198.1	1930	BKN	35	10	7	.588	21	59	6	2	1	204	87	100	16	70	5	8	849	2	2.68	3.18	0.84	0.73	6.9	8.2	1.38	.269	4.54	81	5.09	106	9.26	-6.3
25	Pete Appleton P. Appleton	4.02	118.2	1930	CLE	39	8	7	.533	7	45	2	0	1	122	53	71	8	53	5	20	527	2	3.41	4.02	0.85	0.61	8.5	10.1	1.47	.274	5.38	82	5.08	103	9.25	-1.4