The Texas Rangers allowed the fewest runs by a team in May 2005, with 89 runs.

	TEAM	R	MONTH	G	W%	W	L	ERA	SO	SHO	SV	IP	H	ER	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Rangers	89	May 2005	25	.720	18	7	3.51	137	1	8	223.0	226	87	18	64	7	1	941	5	5.53	2.58	2.14	0.73	14.6	6.8	1.30	.291	3.59	9.12
2	Cubs	98	May 2005	27	.519	14	13	3.37	208	0	7	240.1	201	90	28	85	9	10	993	8	7.79	3.18	2.45	1.05	20.9	8.6	1.19	.261	3.67	7.53
3	Twins	98	May 2005	27	.519	14	13	3.22	147	2	7	248.2	242	89	27	49	6	5	1,019	4	5.32	1.77	3.00	0.98	14.4	4.8	1.17	.272	3.55	8.76
4	Brewers	98	May 2005	28	.500	14	14	3.14	213	1	6	246.1	202	86	34	91	11	9	1,026	8	7.78	3.32	2.34	1.24	20.8	8.9	1.19	.248	3.58	7.38
5	Indians	99	May 2005	27	.593	16	11	3.33	168	0	12	243.0	229	90	26	74	9	3	1,017	4	6.22	2.74	2.27	0.96	16.5	7.3	1.25	.274	3.67	8.48
6	Angels	99	May 2005	28	.607	17	11	3.34	189	1	12	250.2	242	93	25	75	6	1	1,038	13	6.79	2.69	2.52	0.90	18.2	7.2	1.26	.292	3.55	8.69
7	Blue Jays	105	May 2005	27	.556	15	12	3.68	152	1	5	240.0	229	98	26	74	10	4	996	4	5.70	2.78	2.05	0.97	15.3	7.4	1.26	.277	3.94	8.59
8	White Sox	107	May 2005	28	.643	18	10	3.68	173	1	11	247.1	237	101	29	74	5	2	1,033	4	6.30	2.69	2.34	1.06	16.7	7.2	1.26	.277	3.89	8.62
9	Braves	113	May 2005	27	.519	14	13	4.04	138	1	6	234.0	251	105	18	90	5	7	1,019	6	5.31	3.46	1.53	0.69	13.5	8.8	1.46	.303	4.35	9.65
10	Mets	114	May 2005	28	.536	15	13	3.83	199	0	9	246.2	229	105	23	97	8	5	1,051	5	7.26	3.54	2.05	0.84	18.9	9.2	1.32	.285	4.16	8.36
11	Tigers	115	May 2005	27	.444	12	15	3.66	170	0	9	241.0	239	98	23	83	8	5	1,030	4	6.35	3.10	2.05	0.86	16.5	8.1	1.34	.290	4.29	8.93
12	Orioles	115	May 2005	28	.536	15	13	3.43	204	0	10	252.0	221	96	24	91	7	8	1,051	11	7.29	3.25	2.24	0.86	19.4	8.7	1.24	.272	4.11	7.89
13	Nationals	116	May 2005	28	.500	14	14	3.95	137	0	9	250.1	245	110	22	97	10	11	1,070	6	4.93	3.49	1.41	0.79	12.8	9.1	1.37	.277	4.17	8.81
14	Pirates	117	May 2005	28	.536	15	13	3.84	150	1	8	248.2	226	106	24	104	4	9	1,057	5	5.43	3.76	1.44	0.87	14.2	9.8	1.33	.261	4.23	8.18
15	Padres	117	May 2005	28	.786	22	6	4.11	197	1	12	254.0	239	116	27	82	7	6	1,069	5	6.98	2.91	2.40	0.96	18.4	7.7	1.26	.280	4.15	8.47
16	Phillies	126	May 2005	28	.536	15	13	4.32	206	0	6	243.2	235	117	33	89	12	12	1,050	8	7.61	3.29	2.31	1.22	19.6	8.5	1.33	.285	4.65	8.68
17	Cardinals	126	May 2005	29	.621	18	11	3.73	184	0	12	258.0	250	107	31	89	12	5	1,085	6	6.42	3.10	2.07	1.08	17.0	8.2	1.31	.285	4.40	8.72
18	Marlins	126	May 2005	27	.481	13	14	4.32	183	0	7	237.2	255	114	14	99	13	7	1,042	6	6.93	3.75	1.85	0.53	17.6	9.5	1.49	.329	4.77	9.66
19	Yankees	136	May 2005	27	.630	17	10	4.54	158	2	9	238.0	274	120	21	57	14	4	1,042	7	5.97	2.16	2.77	0.79	15.2	5.5	1.39	.319	5.14	10.36
20	Giants	138	May 2005	27	.407	11	16	4.59	145	0	7	241.0	252	123	32	100	3	5	1,050	4	5.41	3.73	1.45	1.20	13.8	9.5	1.46	.286	5.15	9.41
21	Red Sox	142	May 2005	28	.571	16	12	4.99	155	0	8	243.1	241	135	25	83	16	7	1,050	13	5.73	3.07	1.87	0.92	14.8	7.9	1.33	.280	5.25	8.91
22	Mariners	142	May 2005	27	.333	9	18	5.21	149	1	7	233.0	245	135	36	94	14	6	1,036	10	5.76	3.63	1.59	1.39	14.4	9.1	1.45	.281	5.48	9.46
23	Diamondbacks	143	May 2005	28	.571	16	12	4.60	184	1	8	252.1	295	129	29	88	10	8	1,124	10	6.56	3.14	2.09	1.03	16.4	7.8	1.52	.327	5.10	10.52
24	Astros	149	May 2005	29	.345	10	19	4.99	206	1	6	249.0	264	138	40	79	9	6	1,074	7	7.45	2.86	2.61	1.45	19.2	7.4	1.38	.303	5.39	9.54
25	Dodgers	150	May 2005	28	.393	11	17	5.23	180	0	7	246.0	281	143	42	77	9	5	1,075	8	6.59	2.82	2.34	1.54	16.7	7.2	1.46	.312	5.49	10.28