Since 2021, the Colorado Rockies have allowed the most runs by a team, with 4,033 runs.

	TEAM	R	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	4,033	725	.386	280	445	725	5.29	5,219	4	2	157	6344.0	6,907	3,727	938	2,497	296	64	27,972	280	7.40	3.54	2.09	1.33	18.7	8.9	1.48	.314	5.72	9.80
2	Nationals	3,686	726	.405	294	432	726	4.80	5,728	3	0	163	6355.1	6,467	3,391	996	2,428	306	95	27,694	253	8.11	3.44	2.36	1.41	20.7	8.8	1.40	.300	5.22	9.16
3	Athletics	3,607	728	.408	297	431	728	4.69	5,736	4	4	152	6426.2	6,367	3,348	883	2,467	373	126	27,918	276	8.03	3.45	2.33	1.24	20.5	8.8	1.37	.297	5.05	8.92
4	Diamondbacks	3,581	726	.467	339	387	726	4.63	5,784	4	4	161	6420.1	6,341	3,301	904	2,325	272	120	27,624	197	8.11	3.26	2.49	1.27	20.9	8.4	1.35	.296	5.02	8.89
5	Pirates	3,501	728	.422	307	421	728	4.53	5,874	4	2	165	6396.1	6,195	3,219	790	2,545	360	101	27,747	235	8.27	3.58	2.31	1.11	21.2	9.2	1.37	.297	4.93	8.72
6	Angels	3,473	725	.446	323	402	725	4.44	6,129	4	3	174	6399.1	6,029	3,156	869	2,670	329	139	27,656	281	8.62	3.76	2.30	1.22	22.2	9.7	1.36	.292	4.88	8.48
7	Reds	3,417	727	.475	345	382	727	4.47	6,321	5	3	182	6422.2	6,030	3,188	931	2,570	383	85	27,719	232	8.86	3.60	2.46	1.30	22.8	9.3	1.34	.291	4.79	8.45
8	Red Sox	3,416	727	.508	369	358	727	4.29	6,314	6	3	192	6442.0	6,266	3,070	835	2,293	342	105	27,658	239	8.82	3.20	2.75	1.17	22.8	8.3	1.33	.304	4.77	8.75
9	Orioles	3,410	726	.497	361	365	726	4.45	5,901	3	2	186	6412.1	6,280	3,171	887	2,212	272	49	27,448	275	8.28	3.10	2.67	1.24	21.5	8.1	1.32	.297	4.79	8.81
10	Royals	3,384	726	.439	319	407	726	4.44	5,775	6	0	164	6364.1	6,212	3,138	790	2,433	299	66	27,403	311	8.17	3.44	2.37	1.12	21.1	8.9	1.36	.299	4.79	8.78
11	White Sox	3,362	727	.414	301	426	727	4.29	6,444	8	4	148	6387.0	5,981	3,047	849	2,605	294	83	27,548	293	9.08	3.67	2.47	1.20	23.4	9.5	1.34	.296	4.74	8.43
12	Marlins	3,337	724	.432	313	411	724	4.27	6,216	11	3	166	6400.0	6,047	3,035	810	2,376	354	113	27,392	220	8.74	3.34	2.62	1.14	22.7	8.7	1.32	.297	4.69	8.50
13	Cubs	3,291	726	.492	357	369	726	4.15	6,065	3	1	175	6422.2	6,021	2,962	894	2,354	309	63	27,403	224	8.50	3.30	2.58	1.25	22.1	8.6	1.30	.288	4.61	8.44
14	Rangers	3,284	727	.459	334	393	727	4.29	5,889	6	3	154	6413.1	5,980	3,055	864	2,331	286	80	27,229	260	8.26	3.27	2.53	1.21	21.6	8.6	1.30	.286	4.61	8.39
15	Twins	3,261	726	.492	357	369	726	4.24	6,384	5	2	165	6432.0	5,993	3,028	890	2,039	295	67	27,137	216	8.93	2.85	3.13	1.25	23.5	7.5	1.25	.291	4.56	8.39
16	Cardinals	3,191	727	.523	380	347	727	4.12	5,499	7	3	195	6428.2	6,152	2,944	715	2,294	274	72	27,335	240	7.70	3.21	2.40	1.00	20.1	8.4	1.31	.293	4.47	8.61
17	Tigers	3,160	727	.490	356	371	727	3.99	5,849	4	3	189	6431.0	5,910	2,852	795	2,202	279	45	27,179	250	8.19	3.08	2.66	1.11	21.5	8.1	1.26	.283	4.42	8.27
18	Phillies	3,144	726	.552	401	325	726	4.04	6,507	14	10	184	6431.0	5,971	2,887	801	2,115	279	74	27,139	201	9.11	2.96	3.08	1.12	24.0	7.8	1.26	.296	4.40	8.36
19	Blue Jays	3,096	725	.534	387	338	725	3.99	6,390	5	3	190	6411.1	5,866	2,839	898	2,129	322	87	26,993	172	8.97	2.99	3.00	1.26	23.7	7.9	1.25	.288	4.35	8.23
20	Giants	2,995	726	.539	391	335	726	3.74	6,261	9	6	201	6446.0	5,984	2,681	671	2,028	280	78	27,077	235	8.74	2.83	3.09	0.94	23.1	7.5	1.24	.298	4.18	8.35
21	Mets	2,989	727	.534	388	339	727	3.85	6,558	5	3	177	6379.2	5,670	2,729	772	2,370	350	59	26,920	247	9.25	3.34	2.77	1.09	24.4	8.8	1.26	.290	4.22	8.00
22	Guardians	2,988	723	.524	379	344	723	3.84	6,141	3	0	213	6404.1	5,747	2,731	818	2,258	253	55	26,894	229	8.63	3.17	2.72	1.15	22.8	8.4	1.25	.283	4.20	8.08
23	Padres	2,985	725	.531	385	340	725	3.85	6,528	5	5	195	6435.1	5,682	2,750	798	2,260	350	78	27,075	242	9.13	3.16	2.89	1.12	24.1	8.3	1.23	.285	4.17	7.95
24	Mariners	2,974	725	.542	393	332	725	3.80	6,224	4	1	187	6465.2	5,767	2,729	847	1,955	264	99	26,844	204	8.66	2.72	3.18	1.18	23.2	7.3	1.19	.280	4.14	8.03
25	Brewers	2,925	727	.563	409	318	727	3.69	6,603	3	2	216	6471.1	5,537	2,655	839	2,325	297	75	27,097	220	9.18	3.23	2.84	1.17	24.4	8.6	1.21	.276	4.07	7.70