leader in era with greater difference compared to the average of the league un a regular season min 5000 ip

Walter Johnson has the lowest career ERA with an ERA worse than 0.00 and when pitching at least 5000 innings, with an ERA of 2.17.

	NAME	ERA	AVG	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	Walter Johnson W. Johnson	2.17	.235	5914.1	802	417	279	.599	666	3,509	531	110	34	4,913	1,424	1,902	97	1,363	205	127		23,405	154	5.34	2.07	2.57	0.15	15.0	5.8	1.06	.264	2.89	68	2.42	76	7.48	472.8
2	Grover Alexander G. Alexander	2.56	.209	5190.0	696	373	208	.642	600	2,198	436	90	32	4,868	1,476	1,852	165	951	70	81		20,893	38	3.81	1.65	2.31	0.29	10.5	4.6	1.12	.269	3.21	73	2.88	81	8.44	359.1
3	Cy Young C. Young	2.63	.210	7356.0	906	511	316	.618	815	2,803	749	76	17	7,092	2,147	3,167	138	1,217	161	84		29,565	156	3.43	1.49	2.30	0.17	9.5	4.1	1.13	.275	3.87	74	2.84	79	8.68	620
4	Tim Keefe T. Keefe	2.63	.187	5049.2	600	342	225	.603	594	2,564	554	39	2	4,438	1,474	2,470	75	1,233	83	7		20,941	240	4.57	2.20	2.08	0.13	12.2	5.9	1.12	.257	4.40	79	2.92	87	7.91	239.2
5	Pud Galvin P. Galvin	2.87	.202	5941.1	697	361	308	.540	681	1,799	639	57	1	6,352	1,895	3,315	121	744	54	18		25,160	220	2.73	1.13	2.42	0.18	7.2	3.0	1.19	.278	5.02	94	2.97	95	9.62	94.5
6	Kid Nichols K. Nichols	2.96	.226	5067.1	621	361	208	.634	562	1,881	532	48	17	4,929	1,664	2,480	156	1,272	129	56		21,082	169	3.34	2.26	1.48	0.28	8.9	6.0	1.22	.271	4.40	73	3.48	85	8.75	377.8
7	Warren Spahn W. Spahn	3.09	.194	5243.2	750	363	245	.597	665	2,583	382	63	28	4,830	1,798	2,016	434	1,434	42	67	60	21,547	81	4.43	2.46	1.80	0.74	12.0	6.7	1.19	.258	3.46	84	3.44	94	8.29	124.4
8	Gaylord Perry G. Perry	3.11	.131	5350.0	777	314	265	.542	690	3,534	303	53	10	4,938	1,846	2,128	399	1,379	108	33	164	21,953	160	5.95	2.32	2.56	0.67	16.1	6.3	1.18	.275	3.58	85	3.06	85	8.31	312.9
9	Greg Maddux G. Maddux	3.16	.171	5008.1	744	355	227	.610	740	3,371	109	35	0	4,726	1,756	1,981	353	999	137	3	177	20,421	70	6.06	1.80	3.37	0.63	16.5	4.9	1.14	.281	3.56	76	3.25	78	8.49	519.5
10	Nolan Ryan N. Ryan	3.19	.110	5386.0	807	324	292	.526	773	5,714	222	61	3	3,923	1,911	2,178	321	2,795	158	13	78	22,575	277	9.55	4.67	2.04	0.54	25.3	12.4	1.25	.265	3.64	90	2.96	83	6.56	370.2
11	Steve Carlton S. Carlton	3.22	.201	5217.2	741	329	244	.574	709	4,136	254	55	2	4,672	1,864	2,130	414	1,833	53	13	150	21,683	183	7.13	3.16	2.26	0.71	19.1	8.5	1.25	.279	3.67	87	3.14	86	8.06	271.5
12	Don Sutton D. Sutton	3.26	.144	5282.1	774	324	256	.559	756	3,574	178	58	5	4,692	1,914	2,104	472	1,343	82	12	102	21,631	112	6.09	2.29	2.66	0.80	16.5	6.2	1.14	.261	3.58	92	3.23	90	7.99	181.2
13	Phil Niekro P. Niekro	3.35	.169	5404.0	864	318	274	.537	716	3,342	245	45	29	5,044	2,012	2,337	482	1,809	123	83	86	22,677	226	5.57	3.01	1.85	0.80	14.7	8.0	1.27	.270	3.89	87	3.61	95	8.40	116.1