least era in a career by a pitcher with at least 300 games started

Ed Walsh has the lowest career ERA when starting 300+ games, with an ERA of 1.82.

	NAME	ERA	GS	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	ERA-	FIP	FIP-	H/9	PRAA
1	Ed Walsh E. Walsh	1.82	315	430	195	126	.607	1,736	250	57	35	2964.1	2,346	598	873	23	617	52	105		11,413	76	5.27	1.87	2.81	0.07	15.2	5.4	1.00	.259	2.65	69	2.02	79	7.12	164.3
2	Mordecai Brown M. Brown	2.06	332	481	239	130	.648	1,375	271	55	49	3172.1	2,708	725	1,044	43	673	61	138		12,422	61	3.90	1.91	2.04	0.12	11.1	5.4	1.07	.259	2.96	71	2.42	83	7.68	161.9
3	Christy Mathewson C. Mathewson	2.13	552	636	373	188	.665	2,507	435	79	30	4788.2	4,219	1,135	1,620	89	848	59	73		18,913	115	4.71	1.59	2.96	0.17	13.3	4.5	1.06	.268	3.04	75	2.26	76	7.93	363
4	Rube Waddell R. Waddell	2.16	340	407	193	143	.574	2,316	261	50	5	2961.1	2,460	711	1,063	37	803	115	54		11,717	74	7.04	2.44	2.88	0.11	19.8	6.9	1.10	.287	3.23	75	2.03	71	7.48	262
5	Walter Johnson W. Johnson	2.17	666	802	417	279	.599	3,509	531	110	34	5914.1	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
6	Tommy Bond T. Bond	2.25	314	322	193	115	.627	860	294	35	0	2779.2	2,857	695	1,339	32	178		11		11,386	120	2.78	0.58	4.83	0.10	7.6	1.6	1.09	.274	4.34	89	2.38	95	9.25	32.3
7	Will White W. White	2.28	402	403	229	166	.580	1,041	394	36	0	3542.2	3,440	896	1,844	65	496		1		14,951	221	2.64	1.26	2.10	0.17	7.0	3.3	1.11	.254	4.68	83	2.98	108	8.74	-109.3
8	Ed Reulbach E. Reulbach	2.28	300	399	182	106	.632	1,137	200	40	13	2632.1	2,117	668	887	33	892	107	80		10,521	49	3.89	3.05	1.27	0.11	10.8	8.5	1.14	.250	3.03	80	2.84	99	7.24	9
9	Eddie Plank E. Plank	2.35	529	623	326	194	.627	2,246	410	69	23	4495.2	3,958	1,174	1,566	42	1,072	190	77		17,803	88	4.50	2.15	2.10	0.08	12.6	6.0	1.12	.275	3.14	81	2.45	86	7.92	195.2
10	Eddie Cicotte E. Cicotte	2.38	361	502	209	148	.585	1,374	249	35	24	3226.0	2,897	853	1,161	32	827	52	107		12,731	57	3.83	2.31	1.66	0.09	10.8	6.5	1.15	.274	3.24	82	2.54	88	8.08	131.9
11	Doc White D. White	2.39	363	427	189	156	.548	1,384	262	45	5	3041.0	2,738	808	1,118	33	670	120	53		12,093	63	4.10	1.98	2.07	0.10	11.4	5.5	1.12	.274	3.31	89	2.51	96	8.10	22.9
12	Jim McCormick J. McCormick	2.43	485	492	265	214	.553	1,704	466	33	1	4275.2	4,092	1,155	2,095	82	749	12	7		17,702	160	3.59	1.58	2.28	0.17	9.6	4.2	1.13	.265	4.41	86	2.88	100	8.61	-32.7
13	Chief Bender C. Bender	2.46	334	459	212	127	.625	1,711	255	40	34	3017.0	2,645	823	1,108	40	712	102	112		11,895	79	5.10	2.12	2.40	0.12	14.4	6.0	1.11	.279	3.31	88	2.29	83	7.89	145.9
14	Hippo Vaughn H. Vaughn	2.49	332	390	178	137	.565	1,416	214	41	5	2730.0	2,461	754	1,039	39	817	85	45		11,225	63	4.67	2.69	1.73	0.13	12.6	7.3	1.20	.273	3.43	83	2.62	88	8.11	108.4
15	Clayton Kershaw C. Kershaw	2.53	451	455	223	96	.699	3,052	25	15	0	2855.1	2,193	804	881	235	713	46	1	28	11,279	108	9.62	2.25	4.28	0.74	27.1	6.3	1.02	.271	2.78	65	2.85	70	6.91	375.1
16	Grover Alexander G. Alexander	2.56	600	696	373	208	.642	2,198	436	90	32	5190.0	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
17	Slim Sallee S. Sallee	2.56	305	476	174	143	.549	836	189	25	36	2821.2	2,729	804	1,092	68	573	43	123		11,476	12	2.67	1.83	1.46	0.22	7.3	5.0	1.17	.267	3.48	89	2.87	97	8.70	25.8
18	Cy Young C. Young	2.63	815	906	511	316	.618	2,803	749	76	17	7356.0	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
19	Tim Keefe T. Keefe	2.63	594	600	342	225	.603	2,564	554	39	2	5049.2	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
20	Vic Willis V. Willis	2.63	471	513	249	205	.548	1,651	388	50	11	3996.0	3,621	1,167	1,620	66	1,212	156	41		16,263	94	3.72	2.73	1.36	0.15	10.2	7.5	1.21	.270	3.65	86	2.96	95	8.16	82
21	Red Ames R. Ames	2.63	371	533	183	167	.523	1,702	209	27	36	3198.0	2,896	934	1,313	41	1,034	64	118		13,080	156	4.79	2.91	1.65	0.12	13.0	7.9	1.23	.279	3.70	93	2.54	88	8.15	121.5
22	Joe McGinnity J. McGinnity	2.66	381	465	246	142	.634	1,068	314	32	24	3441.1	3,276	1,016	1,436	52	812	179	73		14,132	30	2.79	2.12	1.32	0.14	7.6	5.7	1.19	.268	3.76	85	3.04	95	8.57	68.9
23	Old Hoss Radbourn O. Hoss Radbourn	2.68	502	527	309	194	.614	1,830	488	35	3	4527.1	4,328	1,347	2,273	118	875	54	24		18,918	214	3.64	1.74	2.09	0.23	9.7	4.6	1.15	.262	4.52	82	3.15	95	8.60	51
24	Jack Chesbro J. Chesbro	2.68	332	392	198	132	.600	1,265	260	35	5	2896.2	2,647	864	1,206	39	690	113	52		11,632	62	3.93	2.14	1.83	0.12	10.9	5.9	1.15	.274	3.75	90	2.67	90	8.22	99.6
25	Bill Donovan B. Donovan	2.69	327	378	185	139	.571	1,552	289	35	8	2964.2	2,631	886	1,212	30	1,059	90	49		12,175	69	4.71	3.21	1.47	0.09	12.7	8.7	1.24	.275	3.68	93	2.77	98	7.99	28.2