The Colorado Rockies allowed the most runs by a team in 2012, with 890 runs.

	TEAM	R	SEASON	G	W%	W	L	GS	ERA	SO	CG	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	Rockies	890	2012	162	.395	64	98	162	5.22	1,144	0	0	36	1422.0	1,637	824	198	566	47	61	6,384	94	7.24	3.58	2.02	1.25	17.9	8.9	1.55	.325	5.63	10.36
2	Indians	845	2012	162	.420	68	94	162	4.78	1,086	2	1	43	1442.0	1,503	766	174	543	55	27	6,283	67	6.78	3.39	2.00	1.09	17.3	8.6	1.42	.300	5.27	9.38
3	Twins	832	2012	162	.407	66	96	162	4.77	943	3	1	35	1438.2	1,536	762	198	465	57	43	6,214	60	5.90	2.91	2.03	1.24	15.2	7.5	1.39	.294	5.20	9.61
4	Red Sox	806	2012	162	.426	69	93	162	4.70	1,176	6	2	35	1443.0	1,449	754	190	529	66	33	6,209	42	7.33	3.30	2.22	1.19	18.9	8.5	1.37	.296	5.03	9.04
5	Astros	794	2012	162	.340	55	107	162	4.56	1,170	3	2	31	1423.1	1,493	721	173	540	48	40	6,238	75	7.40	3.41	2.17	1.09	18.8	8.7	1.43	.306	5.02	9.44
6	Blue Jays	784	2012	162	.451	73	89	162	4.64	1,142	5	4	29	1443.2	1,439	745	204	574	55	20	6,216	56	7.12	3.58	1.99	1.27	18.4	9.2	1.39	.291	4.89	8.97
7	Cubs	759	2012	162	.377	61	101	162	4.51	1,128	1	0	28	1413.2	1,399	708	175	573	65	36	6,140	44	7.18	3.65	1.97	1.11	18.4	9.3	1.39	.291	4.83	8.91
8	Royals	746	2012	162	.444	72	90	162	4.30	1,177	2	1	44	1451.1	1,504	693	163	542	60	44	6,251	49	7.30	3.36	2.17	1.01	18.8	8.7	1.41	.311	4.63	9.33
9	Brewers	733	2012	162	.512	83	79	162	4.22	1,402	0	0	44	1453.2	1,458	682	169	525	31	20	6,245	57	8.68	3.25	2.67	1.05	22.4	8.4	1.36	.313	4.54	9.03
10	Marlins	724	2012	162	.426	69	93	162	4.09	1,113	5	3	38	1440.2	1,448	655	133	495	55	61	6,186	36	6.95	3.09	2.25	0.83	18.0	8.0	1.35	.300	4.52	9.05
11	Padres	710	2012	162	.469	76	86	162	4.01	1,205	4	3	43	1434.2	1,356	640	162	539	48	48	6,151	49	7.56	3.38	2.24	1.02	19.6	8.8	1.32	.284	4.45	8.51
12	Mets	709	2012	162	.457	74	88	162	4.09	1,240	7	5	36	1434.0	1,368	651	161	488	40	29	6,086	40	7.78	3.06	2.54	1.01	20.4	8.0	1.29	.290	4.45	8.59
13	Rangers	707	2012	162	.574	93	69	162	3.99	1,286	7	2	43	1442.0	1,378	639	175	446	41	15	6,067	53	8.03	2.78	2.88	1.09	21.2	7.4	1.26	.292	4.41	8.60
14	Orioles	705	2012	162	.574	93	69	162	3.90	1,177	1	1	55	1483.0	1,433	642	184	481	53	36	6,278	34	7.14	2.92	2.45	1.12	18.7	7.7	1.29	.285	4.28	8.70
15	Angels	699	2012	162	.549	89	73	162	4.02	1,157	6	5	38	1433.1	1,339	640	186	483	40	20	6,034	38	7.26	3.03	2.40	1.17	19.2	8.0	1.27	.277	4.39	8.41
16	Diamondbacks	688	2012	162	.500	81	81	162	3.93	1,200	4	2	39	1433.2	1,432	626	155	417	51	18	6,063	52	7.53	2.62	2.88	0.97	19.8	6.9	1.29	.301	4.32	8.99
17	Phillies	680	2012	162	.500	81	81	162	3.83	1,385	5	4	42	1451.1	1,387	618	178	409	44	33	6,072	30	8.59	2.54	3.39	1.10	22.8	6.7	1.24	.298	4.22	8.60
18	White Sox	676	2012	162	.525	85	77	162	4.02	1,246	6	2	37	1445.2	1,365	646	186	503	68	29	6,098	66	7.76	3.13	2.48	1.16	20.4	8.2	1.29	.288	4.21	8.50
19	Pirates	674	2012	162	.488	79	83	162	3.86	1,192	2	1	45	1433.1	1,357	615	153	490	45	30	6,097	45	7.48	3.08	2.43	0.96	19.6	8.0	1.29	.286	4.23	8.52
20	Tigers	670	2012	162	.543	88	74	162	3.75	1,318	9	3	40	1430.2	1,409	596	151	438	42	35	6,045	46	8.29	2.76	3.01	0.95	21.8	7.2	1.29	.307	4.21	8.86
21	Yankees	668	2012	162	.586	95	67	162	3.84	1,318	6	2	51	1445.1	1,401	617	190	431	49	32	6,085	53	8.21	2.68	3.06	1.18	21.7	7.1	1.27	.296	4.16	8.72
22	Mariners	651	2012	162	.463	75	87	162	3.76	1,166	8	6	43	1456.2	1,359	608	166	449	49	39	6,062	61	7.20	2.77	2.60	1.03	19.2	7.4	1.24	.282	4.02	8.40
23	Giants	649	2012	162	.580	94	68	162	3.68	1,237	5	4	53	1451.0	1,361	593	142	489	51	42	6,138	54	7.67	3.03	2.53	0.88	20.2	8.0	1.27	.289	4.03	8.44
24	Cardinals	648	2012	162	.543	88	74	162	3.71	1,218	4	2	42	1462.2	1,420	603	134	436	50	28	6,158	46	7.49	2.68	2.79	0.82	19.8	7.1	1.27	.298	3.99	8.74
25	Athletics	614	2012	162	.580	94	68	162	3.48	1,136	1	0	47	1470.0	1,360	569	147	462	46	34	6,131	40	6.96	2.83	2.46	0.90	18.5	7.5	1.24	.279	3.76	8.33