pitchers that have allowed the most runs in may

Phil Niekro has allowed the most career runs in the month of May, with 430 runs.

	NAME	R	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Phil Niekro P. Niekro	430	161	53	54	.495	119	3.61	552	42	5	3	933.2	885	374	78	355	25	23	25	3,950	32	5.32	3.42	1.55	0.75	14.0	9.0	1.33	.274	4.14	8.53
2	Don Sutton D. Sutton	411	138	57	50	.533	138	3.65	628	29	13	0	934.1	868	379	91	237	15	0	20	3,856	19	6.05	2.28	2.65	0.88	16.3	6.1	1.18	.269	3.96	8.36
3	Gaylord Perry G. Perry	393	144	61	40	.604	127	3.16	644	50	10	2	996.1	908	350	78	273	26	5	30	4,070	25	5.82	2.47	2.36	0.70	15.8	6.7	1.19	.272	3.55	8.20
4	Burleigh Grimes B. Grimes	385	115	52	40	.565	94	3.34	295	60	7	5	794.2	816		22	260	19	18		3,412	22	3.34	2.94	1.13	0.25	8.6	7.6	1.35	.282	4.36	9.24
5	Tommy John T. John	384	150	61	40	.604	135	3.24	416	31	7	0	913.1	879	329	50	262	18	6	21	3,779	29	4.10	2.58	1.59	0.49	11.0	6.9	1.25	.273	3.78	8.66
6	Jamie Moyer J. Moyer	382	128	42	45	.483	109	4.76	378	4	2	0	690.2	734	365	106	215	20	7	12	2,967	7	4.93	2.80	1.76	1.38	12.7	7.2	1.37	.279	4.98	9.56
7	Sad Sam Jones S. Sam Jones	381	111	41	44	.482	91	4.17	234	46	4	2	705.2	732		36	245	16	13			18	2.98	3.12	0.96	0.46		8.1	1.38	.278	4.86	9.34
8	Early Wynn E. Wynn	369	120	55	42	.567	113	3.58	420	50	11	3	826.2	743	329	65	335	8	6	9	3,462	8	4.57	3.65	1.25	0.71	12.1	9.7	1.30	.257	4.02	8.09
9	Bobo Newsom B. Newsom	365	108	31	40	.437	84	4.35	366	34	5	6	624.1	682	302	35	315	10	18		2,830	8	5.28	4.54	1.16	0.50	12.9	11.1	1.60	.308	5.26	9.83
10	Grover Alexander G. Alexander	362	126	64	33	.660	104	2.84	398	69	12	3	866.1	842		32	170	14	16			6	4.13	1.77	2.34	0.33		4.8	1.17	.276	3.76	8.75
11	Bert Blyleven B. Blyleven	360	121	50	41	.549	118	3.40	689	43	13	0	858.1	800	324	72	220	19	1	16	3,534	23	7.22	2.31	3.13	0.75	19.5	6.2	1.19	.287	3.77	8.39
12	Nolan Ryan N. Ryan	357	135	57	48	.543	133	3.14	957	43	14	1	920.0	650	321	53	502	25	1	10	3,846	45	9.36	4.91	1.91	0.52	24.9	13.1	1.25	.259	3.49	6.36
13	Frank Tanana F. Tanana	355	116	40	44	.476	109	3.93	481	25	6	0	709.1	698	310	88	229	19	2	18	3,021	23	6.10	2.91	2.10	1.12	15.9	7.6	1.31	.277	4.50	8.86
14	Fergie Jenkins F. Jenkins	354	115	41	45	.477	108	3.70	552	47	6	2	802.2	772	330	107	187	18	6	22	3,316	10	6.19	2.10	2.95	1.20	16.6	5.6	1.19	.271	3.97	8.66
15	Jim Kaat J. Kaat	354	167	43	45	.489	110	3.34	446	30	3	5	829.1	822	308	69	212	24	25	22	3,469	26	4.84	2.30	2.10	0.75	12.9	6.1	1.25	.277	3.84	8.92
16	Greg Maddux G. Maddux	347	130	53	40	.570	130	3.14	630	17	5	0	886.2	835	309	62	187	20	0	39	3,635	15	6.39	1.90	3.37	0.63	17.3	5.1	1.15	.283	3.52	8.48
17	Bartolo Colon B. Colon	345	101	43	36	.544	101	4.36	471	10	3	0	639.1	674	310	96	162	17	0	13	2,710	11	6.63	2.28	2.91	1.35	17.4	6.0	1.31	.294	4.86	9.49
18	Warren Spahn W. Spahn	344	119	59	43	.578	111	3.22	436	59	10	4	852.0	822	305	78	263	9	8		3,570	10	4.61	2.78	1.66	0.82	12.2	7.4	1.27	.267	3.63	8.68
19	Walter Johnson W. Johnson	344	139	66	52	.559	111	2.00	565	82	19	7	969.2	851		16	247	41	27			24	5.24	2.29	2.29	0.15		6.3	1.13	.273	3.19	7.90
20	Bob Friend B. Friend	343	112	27	47	.365	89	4.30	323	20	4	1	621.0	705	297	65	158	4	12	18	2,684	14	4.68	2.29	2.04	0.94	12.0	5.9	1.39	.300	4.97	10.22
21	Jack Quinn J. Quinn	343	142	58	34	.630	87	2.34	251	54	9	13	775.2	832		18	169	18	42			14	2.91	1.96	1.49	0.21		5.4	1.29	.302	3.98	9.65
22	Red Ruffing R. Ruffing	341	105	44	34	.564	89	3.93	327	54	9	4	688.2	680	301	40	276	12	13		2,972	7	4.27	3.61	1.18	0.52	11.0	9.3	1.39	.276	4.46	8.89
23	Tom Glavine T. Glavine	340	121	59	34	.634	121	3.65	505	14	5	0	786.0	721	319	78	271	12	0	27	3,283	15	5.78	3.10	1.86	0.89	15.4	8.3	1.26	.266	3.89	8.26
24	Robin Roberts R. Roberts	339	119	50	48	.510	110	3.35	436	53	10	5	821.1	783	306	91	150	7	8		3,349	3	4.78	1.64	2.91	1.00	13.0	4.5	1.14	.260	3.71	8.58
25	Steve Carlton S. Carlton	338	133	63	44	.589	126	2.86	730	48	14	0	930.2	808	296	59	304	8	1	19	3,812	27	7.06	2.94	2.40	0.57	19.2	8.0	1.19	.276	3.27	7.81