Colonel Snover, Babe Doty and Harry Raymond are tied for the lowest career ERA with an ERA of 1.00 or worse, with an ERA of 1.00.

Interpreted as:

lowest era by a player minimum 1 all-time

	NAME	ERA	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	Colonel Snover C. Snover	1.00	2	0	1	.000	1	4	0	0	0	9.0	7	1	5	0	3	1	1		38	0	4.00	3.00	1.33	0.00	10.5	7.9	1.11	.233	5.00	35	2.93	102	7.00	-0.1
2	Babe Doty B. Doty	1.00	1	1	0	1.000	1	4	1	0	0	9.0	9	1	1	0	1	0	0		37	0	4.00	1.00	4.00	0.00	10.8	2.7	1.11	.281	1.00	26	2.36	64	9.00	1.3
3	Harry Raymond H. Raymond	1.00	1	1	0	1.000	1	1	1	0	0	9.0	8	1	2	0	11	0	0		46	2	1.00	11.00	0.09	0.00	2.2	23.9	2.11	.235	2.00	26	6.45	170	8.00	-2.7
4	Kyle Hurt K. Hurt	1.04	4	0	1	.000	1	6	0	0	0	8.2	8	1	2	0	1	0	1	0	33	0	6.23	1.04	6.00	0.00	18.2	3.0	1.04	.308	2.08	26	2.14	52	8.31	2
5	Fred Herbert F. Herbert	1.06	2	1	1	.500	2	6	1	0	0	17.0	12	2	5	0	4	0	0		65	0	3.18	2.12	1.50	0.00	9.2	6.2	0.94	.218	2.65	40	2.41	90	6.35	0.5
6	Brad Kilby B. Kilby	1.07	16	1	0	1.000	1	28	0	0	0	25.1	17	3	4	3	4	0	3	0	97	0	9.95	1.42	7.00	1.07	28.9	4.1	0.83	.226	1.42	26	2.88	69	6.04	3.9
7	Brad Moore B. Moore	1.08	8	0	0		0	3	0	0	0	8.1	8	1	1	0	6	0	5	2	34	1	3.24	6.48	0.50	0.00	8.8	17.6	1.68	.320	1.08	28	4.21	117	8.64	-0.6
8	Rodrigo Rosario R. Rosario	1.13	2	1	0	1.000	2	6	0	0	0	8.0	5	1	2	0	3	1	0	1	33	1	6.75	3.38	2.00	0.00	18.2	9.1	1.00	.217	2.25	26	3.02	69	5.63	1.2
9	Hector Maestri H. Maestri	1.13	2	0	1	.000	1	3	0	0	0	8.0	7	1	3	1	3	0	0	0	33	0	3.38	3.38	1.00	1.13	9.1	9.1	1.25	.231	3.38	29	4.56	113	7.88	-0.5
10	Whitey Wistert W. Wistert	1.13	2	0	1	.000	1	1	0	0	0	8.0	5	1	1	1	5	0	1		33	0	1.13	5.63	0.20	1.13	3.0	15.2	1.25	.154	1.13	28	6.37	159	5.63	-2.1
11	Pete Fahrer P. Fahrer	1.13	5	0	0		0	2	0	0	0	8.0	8	1	3	0	4	0	5		33	0	2.25	4.50	0.50	0.00	6.1	12.1	1.50	.296	3.38	40	3.44	115	9.00	-0.4
12	Frank Leary F. Leary	1.13	2	0	1	.000	1	4	0	0	0	8.0	7	1	2	0	6	0	1		32	0	4.50	6.75	0.67	0.00	12.5	18.8	1.63	.318	2.25	45	3.43	128	7.88	-0.6
13	Joe Koukalik J. Koukalik	1.13	1	0	1	.000	1	1	1	0	0	8.0	10	1	3	0	4	0	0		34	0	1.13	4.50	0.25	0.00	2.9	11.8	1.75	.345	3.38	43	3.67	134	11.25	-0.9
14	Red Long R. Long	1.13	1	0	0		1	5	1	0	0	8.0	4	1	2	0	3	1	0		31	0	5.63	3.38	1.67	0.00	16.1	9.7	0.88	.182	2.25	39	2.92	96	4.50	0.1
15	Billy Ging B. Ging	1.13	1	1	0	1.000	1	2	1	0	0	8.0	5	1	1	0	5	0	0		33	0	2.25	5.63	0.40	0.00	6.1	15.2	1.25	.192	1.13	28	4.31	106	5.63	-0.1
16	Sam Mertes S. Mertes	1.13	1	1	0	1.000	1	0	0	0	0	8.0	6	1	2	0	0	0	1		19	0	0.00	0.00		0.00	0.0	0.0	0.75	.316	2.25	33	2.67	82	6.75	0.5
17	Eddie Hogan E. Hogan	1.13	1	0	1	.000	1	4	1	0	0	8.0	10	1	7	0	0		0		35	0	4.50	0.00		0.00	11.4	0.0	1.25		7.88	41	1.76	61	11.25	1
18	Rhett Lowder R. Lowder	1.17	6	2	2	.500	6	22	0	0	0	30.2	25	4	4	0	14	0	0	0	128	0	6.46	4.11	1.57	0.00	17.2	10.9	1.27	.272	1.17	27	3.09	72	7.34	4
19	Lefty Guise L. Guise	1.17	2	0	0		0	1	0	0	0	7.2	8	1	2	0	5	1	0		34	0	1.17	5.87	0.20	0.00	2.9	14.7	1.70	.296	2.35	31	4.92	128	9.39	-0.9
20	Paul Carpenter P. Carpenter	1.17	5	0	0		0	5	0	0	0	7.2	8	1	3	0	4	0	5		36	0	5.87	4.70	1.25	0.00	13.9	11.1	1.57	.296	3.52	45	2.58	98	9.39	0
21	Al Tedrow A. Tedrow	1.21	4	1	2	.333	3	4	1	0	0	22.1	19	3	6	0	14	3	0		98	0	1.61	5.64	0.29	0.00	4.1	14.3	1.48	.247	2.42	43	4.36	150	7.66	-3.4
22	Ben Braymer B. Braymer	1.23	3	1	0	1.000	1	8	0	0	0	7.1	7	1	1	0	5	0	0	0	34	0	9.82	6.14	1.60	0.00	23.5	14.7	1.64	.333	1.23	27	3.05	67	8.59	1.2
23	Charlie Culberson C. Culberson	1.23	8	0	0		0	1	0	0	0	7.1	7	1	1	0	3	0	8	0	31	1	1.23	3.68	0.33	0.00	3.2	9.7	1.36	.259	1.23	30	4.11	97	8.59	0.1
24	Luis Rivera L. Rivera	1.23	6	1	0	1.000	0	5	0	0	0	7.1	5	1	1	0	6	0	3	1	32	0	6.14	7.36	0.83	0.00	15.6	18.8	1.50	.238	1.23	27	4.22	90	6.14	0.4
25	Nolan McLean N. McLean	1.27	7	4	1	.800	7	46	0	0	0	42.2	29	6	8	1	14	2	0	0	165	2	9.70	2.95	3.29	0.21	27.9	8.5	1.01	.275	1.69	31	2.41	59	6.12	8.1