The Pittsburgh Pirates allowed the fewest runs by a team in April 2009, with 75 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	Pirates	75	April 2009	21	.524	11	10	3.41	112	1	5	184.2	157	70	19	86	9	6	779	3	5.46	4.19	1.30	0.93	14.4	11.0	1.32	.250	3.66	7.65
2	Giants	80	April 2009	20	.500	10	10	3.90	164	0	5	177.2	165	77	17	85	7	10	769	11	8.31	4.31	1.93	0.86	21.3	11.1	1.41	.298	4.05	8.36
3	Royals	82	April 2009	22	.545	12	10	3.62	172	1	6	194.0	172	78	16	74	5	2	806	8	7.98	3.43	2.32	0.74	21.3	9.2	1.27	.289	3.80	7.98
4	Athletics	82	April 2009	19	.421	8	11	3.71	128	0	5	177.0	163	73	18	88	2	5	765	6	6.51	4.47	1.45	0.92	16.7	11.5	1.42	.274	4.17	8.29
5	Mariners	84	April 2009	22	.591	13	9	3.47	148	0	8	194.2	179	75	13	69	8	2	830	15	6.84	3.19	2.14	0.60	17.8	8.3	1.27	.280	3.88	8.28
6	Braves	90	April 2009	21	.476	10	11	4.06	178	0	5	184.0	175	83	10	78	12	7	806	4	8.71	3.82	2.28	0.49	22.1	9.7	1.38	.313	4.40	8.56
7	Reds	92	April 2009	21	.524	11	10	4.11	135	1	7	186.0	172	85	20	87	9	2	803	6	6.53	4.21	1.55	0.97	16.8	10.8	1.39	.275	4.45	8.32
8	Astros	92	April 2009	22	.409	9	13	4.13	141	0	4	196.0	205	90	22	79	9	2	844	4	6.47	3.63	1.78	1.01	16.7	9.4	1.45	.309	4.22	9.41
9	Dodgers	96	April 2009	23	.652	15	8	4.16	168	0	9	199.0	169	92	16	86	11	10	843	12	7.60	3.89	1.95	0.72	19.9	10.2	1.28	.272	4.34	7.64
10	Cardinals	96	April 2009	23	.696	16	7	3.65	153	1	9	207.1	205	84	15	78	5	2	892	8	6.64	3.39	1.96	0.65	17.2	8.7	1.36	.296	4.17	8.90
11	Brewers	97	April 2009	22	.545	12	10	4.16	153	0	6	194.2	177	90	22	88	16	7	848	7	7.07	4.07	1.74	1.02	18.0	10.4	1.36	.272	4.48	8.18
12	Mets	97	April 2009	21	.429	9	12	4.46	153	0	4	183.2	177	91	19	81	5	6	805	6	7.50	3.97	1.89	0.93	19.0	10.1	1.40	.289	4.75	8.67
13	White Sox	98	April 2009	21	.524	11	10	4.52	135	0	5	185.0	205	93	16	81	3	6	839	9	6.57	3.94	1.67	0.78	16.1	9.7	1.55	.313	4.77	9.97
14	Rays	103	April 2009	23	.391	9	14	4.48	147	0	3	198.2	189	99	23	87	6	4	856	12	6.66	3.94	1.69	1.04	17.2	10.2	1.39	.280	4.67	8.56
15	Cubs	104	April 2009	21	.476	10	11	4.70	179	0	3	187.2	179	98	27	92	6	6	822	7	8.58	4.41	1.95	1.29	21.8	11.2	1.44	.293	4.99	8.58
16	Tigers	105	April 2009	21	.524	11	10	4.29	137	0	4	182.2	185	87	26	72	3	4	791	9	6.75	3.55	1.90	1.28	17.3	9.1	1.41	.288	5.17	9.11
17	Marlins	105	April 2009	22	.636	14	8	4.39	165	0	5	199.0	193	97	16	89	7	9	881	11	7.46	4.03	1.85	0.72	18.7	10.1	1.42	.293	4.75	8.73
18	Diamondbacks	105	April 2009	22	.409	9	13	4.52	161	0	4	199.0	197	100	24	73	3	2	854	10	7.28	3.30	2.21	1.09	18.9	8.5	1.36	.292	4.75	8.91
19	Red Sox	107	April 2009	22	.636	14	8	4.52	162	0	8	197.1	200	99	22	93	13	3	884	7	7.39	4.24	1.74	1.00	18.3	10.5	1.48	.300	4.88	9.12
20	Rockies	108	April 2009	20	.400	8	12	5.46	123	0	4	173.0	202	105	27	80	6	8	783	4	6.40	4.16	1.54	1.40	15.7	10.2	1.63	.320	5.62	10.51
21	Blue Jays	112	April 2009	24	.625	15	9	4.34	177	0	5	217.2	202	105	27	88	9	4	928	8	7.32	3.64	2.01	1.12	19.1	9.5	1.33	.279	4.63	8.35
22	Phillies	112	April 2009	20	.550	11	9	5.63	155	0	5	179.0	200	112	40	74	6	3	799	3	7.79	3.72	2.09	2.01	19.4	9.3	1.53	.305	5.63	10.06
23	Angels	113	April 2009	21	.429	9	12	4.89	114	0	6	184.0	217	100	20	70	4	5	819	8	5.58	3.42	1.63	0.98	13.9	8.5	1.56	.322	5.53	10.61
24	Padres	115	April 2009	22	.500	11	11	4.90	149	0	8	194.2	204	106	21	88	6	8	852	6	6.89	4.07	1.69	0.97	17.5	10.3	1.50	.311	5.32	9.43
25	Twins	116	April 2009	22	.500	11	11	5.26	132	0	3	193.1	213	113	26	62	5	3	838	8	6.14	2.89	2.13	1.21	15.8	7.4	1.42	.305	5.40	9.92