lowest era for a pitcher in their first 5 seasons with at least 300 ip

Emmanuel Clase had the best ERA by a pitcher when pitching at least 300 innings in his first 5 seasons, with an ERA of 1.67.

	NAME	ERA	IP	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	Emmanuel Clase E. Clase	1.67	312.2	318	16	22	.421	1	302	0	0	158	221	58	91	13	58	5	256	8	1,216	15	8.69	1.67	5.21	0.37	24.8	4.8	0.89	.248	2.62	40	2.39	57	6.36	61.3
2	Ed Reulbach E. Reulbach	1.72	1262.0	175	97	39	.713	142	580	112	28	5	905	241	320	9	417	63	32		4,904	19	4.14	2.97	1.39	0.06	11.8	8.5	1.05	.234	2.28	67	2.60	97	6.45	12.1
3	Ed Walsh E. Walsh	1.73	1412.0	203	95	52	.646	147	774	118	28	13	1,110	271	412	7	262	30	51		5,411	47	4.93	1.67	2.95	0.04	14.3	4.8	0.97	.254	2.63	72	1.83	80	7.08	64.1
4	Mordecai Brown M. Brown	1.77	1172.2	152	88	47	.652	130	504	111	24	7	983	230	375	14	254	23	22		4,567	19	3.87	1.95	1.98	0.11	11.0	5.6	1.05	.257	2.88	63	2.44	85	7.54	49.9
5	Walter Johnson W. Johnson	1.77	1355.1	175	82	78	.513	157	915	135	26	4	1,095	267	433	11	303	49	17		5,309	67	6.08	2.01	3.02	0.07	17.2	5.7	1.03	.269	2.88	69	1.89	74	7.27	96
6	Al Spalding A. Spalding	1.78	539.2	65	48	12	.800	61	41	53	8	1	559	107	238	6	26		4		2,272	1	0.68	0.43	1.58	0.10	1.8	1.1	1.08		3.97	74	2.38	99	9.32	9.6
7	Jack Pfiester J. Pfiester	1.86	736.2	100	47	31	.603	85	381	54	10	0	574	152	245	5	200	31	8		2,895	12	4.65	2.44	1.91	0.06	13.2	6.9	1.05	.250	2.99	73	2.23	84	7.01	34.3
8	Jim Devlin J. Devlin	1.89	1181.0	129	65	60	.520	129	263	127	9	0	1,183	248	597	7	78		0		4,896	34	2.00	0.59	3.37	0.05	5.4	1.6	1.07		4.55	67	2.35	84	9.02	88.9
9	Howie Camnitz H. Camnitz	1.90	757.2	122	56	27	.675	78	362	55	14	6	578	160	257	7	221	18	40		2,945	11	4.30	2.63	1.64	0.08	12.3	7.5	1.05	.244	3.05	76	2.30	88	6.87	25.5
10	Old Hoss Radbourn O. Hoss Radbourn	1.91	2102.1	246	165	67	.711	228	1,074	223	24	3	1,822	445	866	32	269		17		8,508	110	4.60	1.15	3.99	0.14	12.6	3.2	0.99		3.71	67	2.62	89	7.80	60.5
11	George McQuillan G. McQuillan	1.95	877.2	138	51	45	.531	97	337	68	17	5	687	190	280	10	237	15	30		3,381	11	3.46	2.43	1.42	0.10	10.0	7.0	1.05	.243	2.87	73	2.48	91	7.04	21.4
12	Joe Wood J. Wood	1.95	999.2	152	81	43	.653	109	733	88	23	4	783	217	361	8	273	40	35		3,934	27	6.60	2.46	2.68	0.07	18.6	6.9	1.06	.269	3.25	66	2.18	75	7.05	84
13	Paul Skenes P. Skenes	1.96	320.2	55	21	13	.618	55	386	1	0	0	230	70	76	21	74	12	0	0	1,247	4	10.83	2.08	5.22	0.59	31.0	5.9	0.95	.277	2.13	46	2.39	58	6.46	61
14	John Ward J. Ward	1.98	2132.0	250	145	87	.625	232	776	216	23	3	1,974	470	977	21	204		20		8,730	119	3.28	0.86	3.80	0.09	8.9	2.3	1.02		4.12	81	2.33	96	8.33	5.5
15	Will White W. White	2.03	1710.1	195	93	97	.489	194	574	190	13	0	1,754	385	1,009	20	173		1		7,258	127	3.02	0.91	3.32	0.11	7.9	2.4	1.13		5.31	86	2.41	103	9.23	-30.8
16	Jack Coombs J. Coombs	2.05	1017.1	147	66	44	.600	115	564	86	26	4	787	232	323	4	384	32	25		4,046	32	4.99	3.40	1.47	0.04	13.9	9.5	1.15	.256	2.86	82	2.43	99	6.96	2.3
17	Dutch Leonard D. Leonard	2.07	1235.2	195	82	58	.586	145	724	84	22	11	1,015	284	374	16	359	39	40		4,833	25	5.27	2.61	2.02	0.12	15.0	7.4	1.11	.270	2.72	76	2.35	85	7.39	56.6
18	Jeff Pfeffer J. Pfeffer	2.08	969.2	131	67	38	.638	106	364	84	15	8	820	224	310	22	247	45	24		3,898	14	3.38	2.29	1.47	0.20	9.3	6.3	1.10	.248	2.88	74	2.84	99	7.61	3.8
19	Addie Joss A. Joss	2.08	1313.1	156	90	57	.612	147	547	138	25	1	1,083	304	447	12	231	43	7		5,067	18	3.75	1.58	2.37	0.08	10.8	4.6	1.00	.253	3.06	72	2.46	88	7.42	47.1
20	Babe Ruth B. Ruth	2.09	1057.0	141	80	41	.661	128	453	93	17	3	786	246	319	7	367	27	9		4,179	20	3.86	3.12	1.23	0.06	10.8	8.8	1.09	.234	2.72	78	2.65	97	6.69	4.4
21	Tommy Bond T. Bond	2.10	2510.0	289	180	97	.650	283	713	268	35	0	2,558	587	1,138	21	151		8		10,218	76	2.56	0.54	4.72	0.08	7.0	1.5	1.08		4.08	86	2.32	94	9.17	39
22	Ferdie Schupp F. Schupp	2.10	496.0	102	31	10	.756	45	272	33	10	2	367	116	142	9	148	14	46		1,956	6	4.94	2.69	1.84	0.16	13.9	7.6	1.04	.237	2.58	81	2.43	95	6.66	4.1
23	Orval Overall O. Overall	2.13	1322.2	184	92	60	.605	152	813	116	25	11	1,053	313	443	13	471	43	28		5,295	52	5.53	3.20	1.73	0.09	15.4	8.9	1.15	.263	3.01	78	2.35	84	7.17	63.1
24	Frank Linzy F. Linzy	2.15	389.2	230	32	29	.525	1	180	0	0	65	348	93	119	11	128	7	169	38	1,615	14	4.16	2.96	1.41	0.25	11.1	7.9	1.22	.261	2.75	64	2.98	93	8.04	10.8
25	Carl Mays C. Mays	2.15	1225.0	186	81	54	.600	125	453	99	15	12	1,014	293	399	11	327	49	47		4,840	21	3.33	2.40	1.39	0.08	9.4	6.8	1.09	.251	2.93	78	2.63	94	7.45	19.3