lowest era by player in season national league since 1901

Since 1901, Mordecai Brown has the lowest ERA in the NL in a season, with an ERA of 1.04 in 1906.

Interpreted as:

lowest era with a minimum of 1 IP per team game by player in season national league since 1901

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	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	Mordecai Brown M. Brown	1.04	1906	CHC	36	26	6	.813	32	144	27	9	3	277.1	198	32	56	1	61	4	4		1,044	2	4.67	1.98	2.36	0.03	13.8	5.8	0.93	.236	1.82	39	2.08	75	6.43	21.1
2	Bob Gibson B. Gibson	1.12	1968	STL	34	22	9	.710	34	268	28	13	0	304.2	198	38	49	11	62	7	0	6	1,161	4	7.92	1.83	4.32	0.32	23.1	5.3	0.85	.230	1.45	38	1.77	63	5.85	34.8
3	Christy Mathewson C. Mathewson	1.14	1909	NYG	37	25	6	.806	33	149	26	8	2	275.1	192	35	57	2	36	0	4		998	4	4.87	1.18	4.14	0.07	14.9	3.6	0.83	.234	1.86	44	1.62	61	6.28	31.7
4	Jack Pfiester J. Pfiester	1.15	1907	CHC	30	14	9	.609	22	90	13	3	0	195.0	143	25	61	1	48	5	5		745	2	4.15	2.22	1.88	0.05	12.1	6.4	0.98	.236	2.82	47	2.14	81	6.60	10.6
5	Carl Lundgren C. Lundgren	1.17	1907	CHC	28	18	7	.720	25	84	21	7	0	207.0	130	27	42	0	92	2	3		795	2	3.65	4.00	0.91	0.00	10.6	11.6	1.07	.211	1.83	48	2.73	104	5.65	-2.3
6	Grover Alexander G. Alexander	1.22	1915	PHN	49	31	10	.756	42	241	36	12	3	376.1	253	51	86	3	64	10	7		1,435	2	5.76	1.53	3.77	0.07	16.8	4.5	0.84	.224	2.06	43	1.82	63	6.05	44.1
7	Christy Mathewson C. Mathewson	1.28	1905	NYG	43	31	9	.775	37	206	32	8	3	338.2	252	48	85	4	64	1	6		1,294	6	5.47	1.70	3.22	0.11	15.9	4.9	0.93	.243	2.26	42	2.03	69	6.70	34.9
8	Jack Taylor J. Taylor	1.29	1902	CHO	37	23	11	.676	34	88	34	8	1	333.2	273	48	86	2	45	12	3		1,278	10	2.37	1.21	1.96	0.05	6.9	3.5	0.95	.240	2.32	49	2.73	98	7.36	0.6
9	Mordecai Brown M. Brown	1.31	1909	CHC	50	27	9	.750	34	172	32	8	7	342.2	246	50	78	1	53	7	15		1,280	9	4.52	1.39	3.25	0.03	13.4	4.1	0.87	.234	2.05	51	1.78	68	6.46	32.4
10	Mordecai Brown M. Brown	1.39	1907	CHC	34	20	6	.769	27	107	20	6	3	233.0	180	36	51	2	40	6	7		861	4	4.13	1.55	2.68	0.08	12.4	4.6	0.94	.252	1.97	56	1.97	75	6.95	17.2
11	Ed Reulbach E. Reulbach	1.42	1905	CHC	34	18	14	.563	29	152	28	5	1	291.2	208	46	71	1	73	18	5		1,124	5	4.69	2.25	2.08	0.03	13.5	6.5	0.96	.235	2.19	48	2.46	85	6.42	14
12	Orval Overall O. Overall	1.42	1909	CHC	38	20	11	.645	32	205	23	9	3	285.0	204	45	66	1	80	8	6		1,116	11	6.47	2.53	2.56	0.03	18.4	7.2	1.00	.247	2.08	55	1.75	67	6.44	27.8
13	Christy Mathewson C. Mathewson	1.43	1908	NYG	56	37	11	.771	44	259	34	11	5	390.2	281	62	85	5	42	3	9		1,469	2	5.97	0.97	6.17	0.12	17.6	2.9	0.83	.238	1.96	61	1.29	52	6.47	52.4
14	Fred Anderson F. Anderson	1.44	1917	NYG	38	8	8	.500	18	69	8	1	3	162.0	122	26	40	1	34	2	15		632	5	3.83	1.89	2.03	0.06	10.9	5.4	0.96	.230	2.22	56	2.16	87	6.78	5.4
15	Mordecai Brown M. Brown	1.47	1908	CHC	44	29	9	.763	31	123	27	9	5	312.1	214	51	64	1	49	5	12		1,153	6	3.54	1.41	2.51	0.03	10.7	4.2	0.84	.218	1.84	63	1.87	75	6.17	21.5
16	Jack Pfiester J. Pfiester	1.51	1906	CHC	31	20	8	.714	29	153	20	4	0	250.2	173	42	63	3	63	13	2		966	4	5.49	2.26	2.43	0.11	15.8	6.5	0.94	.232	2.26	57	2.21	80	6.21	15.4
17	George McQuillan G. McQuillan	1.53	1908	PHN	48	23	17	.575	42	114	32	7	2	359.2	263	61	88	1	91	6	6		1,367	5	2.85	2.28	1.25	0.03	8.3	6.7	0.98	.227	2.20	66	2.31	95	6.58	4.5
18	Dwight Gooden D. Gooden	1.53	1985	NYM	35	24	4	.857	35	268	16	8	0	276.2	198	47	51	13	69	2	0	4	1,065	6	8.72	2.24	3.88	0.42	25.2	6.5	0.97	.259	1.66	44	2.12	59	6.44	45.6
19	Grover Alexander G. Alexander	1.55	1916	PHN	48	33	12	.733	45	167	38	16	3	389.0	323	67	90	6	50	10	3		1,500	3	3.86	1.16	3.34	0.14	11.1	3.3	0.96	.250	2.08	58	2.12	79	7.47	25.4
20	Howie Camnitz H. Camnitz	1.56	1908	PIT	38	16	9	.640	26	118	17	3	2	236.2	182	41	76	6	69	5	10		942	2	4.49	2.62	1.71	0.23	12.5	7.3	1.06	.237	2.89	66	2.37	95	6.92	3.2
21	Greg Maddux G. Maddux	1.56	1994	ATL	25	16	6	.727	25	156	10	3	0	202.0	150	35	44	4	31	6	0	3	774	3	6.95	1.38	5.03	0.18	20.2	4.0	0.90	.253	1.96	37	2.39	55	6.68	43.7
22	Fred Toney F. Toney	1.58	1915	CIN	36	17	6	.739	23	108	18	6	2	222.2	160	39	46	1	73	3	10		877	2	4.37	2.95	1.48	0.04	12.3	8.3	1.05	.230	1.86	57	2.52	89	6.47	7.7
23	Rube Marquard R. Marquard	1.58	1916	BKN	36	13	6	.684	21	107	15	2	5	205.0	169	36	54	2	38	0	11		793	3	4.70	1.67	2.82	0.09	13.5	4.8	1.01	.259	2.37	59	1.95	73	7.42	16.5
24	Joe McGinnity J. McGinnity	1.61	1904	NYG	51	35	8	.814	44	144	38	9	5	408.0	307	73	103	8	86	13	7		1,588	2	3.18	1.90	1.67	0.18	9.1	5.4	0.96	.224	2.27	59	2.70	96	6.77	5.3
25	Howie Camnitz H. Camnitz	1.62	1909	PIT	41	25	6	.806	30	133	20	6	3	283.0	207	51	75	1	68	7	11		1,057	2	4.23	2.16	1.96	0.03	12.6	6.4	0.97	.243	2.39	63	2.12	81	6.58	15.9

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Fri 5/1	AZ	@	CHC	2:20 PM
Sat 5/2	AZ	@	CHC	2:20 PM
Sun 5/3	AZ	@	CHC	2:20 PM
Mon 5/4	CIN	@	CHC	7:40 PM
Tue 5/5	CIN	@	CHC	7:40 PM

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NL East	W	L	PCT	GB
Braves	22	10	.688
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Phillies	12	19	.387	9.5
Mets	10	21	.323	11.5
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Reds	20	11	.645
Cubs	19	12	.613	1.0
Cardinals	18	13	.581	2.0
Brewers	16	14	.533	3.5
Pirates	16	16	.500	4.5
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Dodgers	20	11	.645
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Rockies	14	18	.438	6.5
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AL East	W	L	PCT	GB
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Orioles	15	16	.484	5.0
Blue Jays	14	17	.452	6.0
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Guardians	16	16	.500
Tigers	16	16	.500
White Sox	14	17	.452	1.5
Twins	14	18	.438	2.0
Royals	12	19	.387	3.5
AL West	W	L	PCT	GB
Athletics	17	14	.548
Mariners	16	16	.500	1.5
Rangers	15	16	.484	2.0
Astros	12	20	.375	5.5
Angels	12	20	.375	5.5