lowest era by the whole league in a MLB season

	LEAGUE	ERA	SEASON	G	W%	W	L	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	NL	2.30	1878	368	.500	180	180	368	1,081	352		1	3324.0	3,537	851	1,904	23	364		14,017	236	2.93	0.99	2.97	0.06	7.7	2.6	1.17		5.16	9.58
2	NL	2.31	1876	520	.500	257	257	520	589	472		13	4739.1	5,338	1,215	3,066	40	336		20,536	187	1.12	0.64	1.75	0.08	2.9	1.6	1.20		5.82	10.14
3	NL	2.35	1908	1,244	.500	616	616	1,244	4,180	836	160	62	11165.2	9,518	2,910	4,137	151	3,222	372	44,394	197	3.37	2.60	1.30	0.12	9.4	7.3	1.14	.257	3.33	7.67
4	NL	2.37	1880	680	.500	332	332	680	1,989	608		13	6031.1	5,943	1,591	3,191	62	739		25,041	294	2.97	1.10	2.69	0.09	7.9	3.0	1.11		4.76	8.87
5	AL	2.39	1908	1,244	.500	612	612	1,244	4,930	841	129	46	11144.1	9,724	2,956	4,284	116	2,897	396	44,161	274	3.98	2.34	1.70	0.09	11.2	6.6	1.13	.268	3.46	7.85
6	NL	2.46	1907	1,232	.500	604	604	1,232	4,217	935	153	37	10818.2	9,552	2,962	4,190	140	3,426	398	43,230	215	3.51	2.85	1.23	0.12	9.8	7.9	1.20	.269	3.49	7.95
7	AL	2.47	1909	1,240	.500	607	607	1,240	4,918	825	142	50	11028.2	9,728	3,028	4,271	109	3,046	436	43,767	290	4.01	2.49	1.61	0.09	11.2	7.0	1.16	.273	3.49	7.94
8	NL	2.50	1879	642	.500	316	316	642	1,843	609		2	5797.0	6,171	1,608	3,409	58	508		24,666	363	2.86	0.79	3.63	0.09	7.5	2.1	1.15		5.29	9.58
9	AL	2.52	1910	1,256	.500	609	609	1,256	5,278	856	130	42	11281.1	9,927	3,155	4,579	147	3,464	428	44,822	290	4.21	2.76	1.52	0.12	11.8	7.7	1.19	.275	3.65	7.92
10	AL	2.54	1907	1,234	.500	599	599	1,234	4,479	893	128	53	11004.2	10,105	3,106	4,521	104	2,886	377	44,264	254	3.66	2.36	1.55	0.09	10.1	6.5	1.18	.275	3.70	8.26
11	NL	2.59	1909	1,242	.500	611	611	1,242	4,437	794	131	64	11184.1	9,913	3,216	4,540	150	3,617	331	44,823	275	3.57	2.91	1.23	0.12	9.9	8.1	1.21	.269	3.65	7.98
12	AL	2.60	1904	1,252	.500	608	608	1,252	5,026	1,097	142	9	11084.1	10,138	3,198	4,433	156	2,611	403	44,515	260	4.08	2.12	1.92	0.13	11.3	5.9	1.15	.275	3.60	8.23
13	NL	2.61	1916	1,244	.500	612	612	1,244	4,827	682	133	82	11222.1	10,141	3,258	4,288	239	3,016	313	45,744	245	3.87	2.42	1.60	0.19	10.6	6.6	1.17	.265	3.44	8.13
14	NL	2.62	1906	1,230	.500	607	607	1,230	4,537	954	139	53	10841.2	9,700	3,162	4,383	124	3,423	387	43,935	218	3.77	2.84	1.33	0.10	10.3	7.8	1.21	.270	3.64	8.05
15	AL	2.65	1905	1,234	.500	606	606	1,234	5,107	976	119	9	10978.2	9,705	3,230	4,554	156	3,008	413	44,049	274	4.19	2.47	1.70	0.13	11.6	6.8	1.16	.270	3.73	7.96
16	AL	2.66	1917	1,244	.500	613	613	1,244	4,146	661	123	101	11230.0	10,039	3,320	4,516	133	3,831	306	45,016	213	3.32	3.07	1.08	0.11	9.2	8.5	1.24	.271	3.62	8.05
17	AA	2.68	1882	468	.500	233	233	468	1,185	438		1	4107.0	4,108	1,225	2,435	52	632		17,151	288	2.60	1.38	1.88	0.11	6.9	3.7	1.15		5.34	9.00
18	AL	2.69	1906	1,226	.500	601	601	1,226	4,561	956	138	33	10864.1	10,001	3,247	4,500	137	2,835	383	43,606	244	3.78	2.35	1.61	0.11	10.5	6.5	1.18	.276	3.73	8.28
19	NL	2.70	1917	1,250	.500	612	612	1,250	4,495	719	124	62	11273.2	10,312	3,386	4,416	202	3,057	271	46,090	202	3.59	2.44	1.47	0.16	9.8	6.6	1.19	.266	3.53	8.23
20	NL	2.73	1904	1,246	.500	612	612	1,246	4,277	1,089	107	30	10914.1	10,220	3,307	4,874	175	3,131	398	45,005	248	3.53	2.58	1.37	0.14	9.5	7.0	1.22	.271	4.02	8.43
21	AL	2.73	1914	1,262	.500	613	613	1,262	5,137	655	128	77	11262.1	10,084	3,422	4,616	148	3,929	330	45,141	291	4.11	3.14	1.31	0.12	11.4	8.7	1.24	.279	3.69	8.06
22	NL	2.75	1915	1,248	.500	611	611	1,248	4,729	679	134	78	11166.2	10,145	3,406	4,524	225	3,269	351	45,901	209	3.81	2.63	1.45	0.18	10.3	7.1	1.20	.266	3.65	8.18
23	NL	2.76	1918	1,016	.500	504	504	1,016	2,898	666	103	45	9172.2	8,562	2,816	3,678	139	2,522	226	37,696	147	2.84	2.47	1.15	0.14	7.7	6.7	1.21	.264	3.61	8.40
24	AL	2.77	1918	1,016	.500	502	502	1,016	2,977	614	93	68	9220.1	8,502	2,840	3,702	96	3,206	232	38,036	152	2.91	3.13	0.93	0.09	7.8	8.4	1.27	.267	3.61	8.30
25	NL	2.77	1881	672	.500	334	334	672	1,784	631		3	5988.1	6,331	1,846	3,425	76	1,036		25,411	343	2.68	1.56	1.72	0.11	7.0	4.1	1.23		5.15	9.52