6 pitchers are tied for the lowest career ERA when pitching at least 30 innings in the month of May, with an ERA of 0.00. The first three are Dixie Walker, Kirby White and Bugs Raymond.

Interpreted as:

best era by a player in may all-time, minimum 30 ip

	NAME	ERA	IP	G	W	L	W%	GS	SO	CG	SHO	SV	H	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Dixie Walker D. Walker	0.00	94.0	18	5	7	.417	13	43	7	0	0	109	62	1	35	8	4		2	4.12	3.35	1.23	0.10		8.3	1.53	.324	5.94	10.44
2	Kirby White K. White	0.00	45.1	11	2	4	.333	5	14	1	0	1	39	22	1	18	0	5	191	3	2.78	3.57	0.78	0.20	7.3	9.4	1.26	.241	4.37	7.74
3	Bugs Raymond B. Raymond	0.00	203.1	35	13	13	.500	25	108	16	4	1	169	66	3	54	6	8	822	5	4.78	2.39	2.00	0.13	13.1	6.6	1.10	.255	2.92	7.48
4	Bill Burns B. Burns	0.00	125.0	20	4	10	.286	17	46	6	1	1	115	54	0	23	6	1	494	2	3.31	1.66	2.00	0.00	9.3	4.7	1.10	.274	3.89	8.28
5	Big Jeff Pfeffer B. Jeff Pfeffer	0.00	172.1	28	6	13	.316	21	64	16	2	0	175	91	1	74	9	6		4	3.34	3.86	0.86	0.05		9.9	1.44	.292	4.75	9.14
6	Irv Young I. Young	0.00	234.2	36	10	19	.345	32	87	22	6	0	256	111	1	57	7	3	979	5	3.34	2.19	1.53	0.04	8.9	5.8	1.33	.308	4.26	9.82
7	Ed Karger E. Karger	0.11	159.1	26	8	9	.471	20	52	8	2	0	154	78	4	62	3	5	668	8	2.94	3.50	0.84	0.23	7.8	9.3	1.36	.274	4.41	8.70
8	Ed Summers E. Summers	0.14	130.2	17	9	6	.600	16	59	12	1	0	118	48	2	31	5	1	527	1	4.06	2.14	1.90	0.14	11.2	5.9	1.14	.270	3.31	8.13
9	George Bell G. Bell	0.19	186.1	28	11	13	.458	22	67	16	6	1	147	59	1	41	3	6	722	5	3.24	1.98	1.63	0.05	9.3	5.7	1.01	.239	2.85	7.10
10	Harry McIntire H. McIntire	0.20	322.0	46	14	21	.400	36	130	27	2	2	303	152	7	111	16	7		2	3.63	3.10	1.17	0.20		8.3	1.29	.275	4.25	8.47
11	Bob Ewing B. Ewing	0.24	370.2	49	24	15	.615	44	124	31	4	0	295	150	4	113	10	5		9	3.01	2.74	1.10	0.10		7.7	1.10	.241	3.64	7.16
12	Hooks Wiltse H. Wiltse	0.28	318.0	52	21	14	.600	34	152	22	2	2	262	116	11	85	3	15		6	4.30	2.41	1.79	0.31		6.6	1.09	.244	3.28	7.42
13	Lew Brockett L. Brockett	0.29	94.1	17	3	7	.300	11	37	5	1	1	89	54	2	41	4	6		3	3.53	3.91	0.90	0.19		12.2	1.38	.347	5.15	8.49
14	Ralph Works R. Works	0.29	93.1	16	7	2	.778	8	35	5	2	0	87	43	0	45	6	6	401	2	3.38	4.34	0.78	0.00	8.7	11.2	1.41	.276	4.15	8.39
15	Harry Krause H. Krause	0.29	122.2	17	10	3	.769	13	69	11	4	0	93	36	2	32	9	1	492	0	5.06	2.35	2.16	0.15	14.0	6.5	1.02	.239	2.64	6.82
16	Gus Dorner G. Dorner	0.33	163.1	25	7	13	.350	17	57	12	1	1	147	92	6	72	5	6		3	3.14	3.97	0.79	0.33		11.3	1.34	.282	5.07	8.10
17	Vic Willis V. Willis	0.36	480.2	65	27	28	.491	61	193	44	9	2	455	193	8	133	11	4		12	3.61	2.49	1.45	0.15		6.9	1.22	.281	3.61	8.52
18	Barney Pelty B. Pelty	0.36	302.2	47	15	14	.517	33	88	23	3	2	267	124	0	96	19	13		4	2.62	2.85	0.92	0.00		9.3	1.20	.322	3.69	7.94
19	Deacon Phillippe D. Phillippe	0.38	407.1	60	23	24	.489	44	163	39	6	5	374	160	2	58	14	13		4	3.60	1.28	2.81	0.04		3.6	1.06	.270	3.54	8.26
20	Lefty Leifield L. Leifield	0.38	258.2	45	18	10	.643	28	96	16	5	2	239	103	3	92	15	10		1	3.34	3.20	1.04	0.10		8.5	1.28	.269	3.58	8.32
21	Joe Lake J. Lake	0.38	235.0	35	15	12	.556	24	104	17	1	0	211	100	2	65	2	9		2	3.98	2.49	1.60	0.08		6.7	1.17	.261	3.83	8.08
22	Al Mattern A. Mattern	0.42	151.2	24	7	10	.412	18	40	11	2	1	149	85	7	62	1	4	644	2	2.37	3.68	0.65	0.42	6.2	9.6	1.39	.266	5.04	8.84
23	Ed Walsh E. Walsh	0.42	432.1	63	30	15	.667	45	249	35	5	4	356	132	3	96	5	17		12	5.18	2.00	2.59	0.06		6.3	1.05	.302	2.75	7.41
24	Jack Taylor J. Taylor	0.44	347.0	40	22	16	.579	39	99	38	6	0	296	121	4	81	17	1		7	2.57	2.10	1.22	0.10		5.8	1.09	.245	3.14	7.68
25	Cy Morgan C. Morgan	0.45	242.2	39	11	12	.478	27	109	17	1	0	224	117	2	111	16	9		14	4.04	4.12	0.98	0.07		13.3	1.38	.374	4.34	8.31