mlb teams with the most runs given up per game in a season from 1903 to 2021

Between the 1903 and 2021 seasons, the Philadelphia Phillies allowed the most runs by a team in a season, with 1,199 runs in 1930.

	TEAM	R	G	SEASON	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	Phillies	1,199	156	1930	.338	52	102	156	6.71	384	54	3	7	1372.2	1,993	1,024	142	543	33		6,549	23	2.52	3.56	0.71	0.93	5.9	8.3	1.85	.340	7.86	13.07
2	Tigers	1,103	162	1996	.327	53	109	162	6.38	957	10	4	22	1432.2	1,699	1,015	241	784	80	63	6,713	82	6.01	4.93	1.22	1.51	14.3	11.7	1.73	.313	6.93	10.67
3	Browns	1,064	155	1936	.375	57	95	155	6.24	399	54	3	13	1348.1	1,776	935	115	609	47		6,382	44	2.66	4.07	0.66	0.77	6.3	9.5	1.77	.319	7.10	11.85
4	Athletics	1,045	154	1936	.346	53	100	154	6.08	405	68	3	11	1352.1	1,645	913	131	696	24		6,301	67	2.70	4.63	0.58	0.87	6.4	11.0	1.73	.300	6.95	10.95
5	Phillies	1,036	154	1929	.464	71	82	154	6.13	369	45	5	24	1348.0	1,743	918	122	616	39		6,303	21	2.46	4.11	0.60	0.81	5.9	9.8	1.75	.314	6.92	11.64
6	Browns	1,035	156	1939	.279	43	111	156	6.01	516	56	3	4	1371.1	1,724	916	133	739	29		6,474	32	3.39	4.85	0.70	0.87	8.0	11.4	1.80	.315	6.79	11.31
7	Rockies	1,028	162	1999	.444	72	90	162	6.01	1,032	12	1	33	1429.0	1,700	955	237	737	60	46	6,574	70	6.50	4.64	1.40	1.49	15.7	11.2	1.71	.325	6.47	10.71
8	Browns	1,023	156	1937	.299	46	108	156	6.00	468	55	2	8	1363.0	1,770	909	143	653	30		6,371	34	3.09	4.31	0.72	0.94	7.3	10.2	1.78	.320	6.75	11.69
9	Athletics	1,022	153	1939	.362	55	97	153	5.79	397	50	6	12	1342.2	1,687	864	148	579	19		6,248	35	2.66	3.88	0.69	0.99	6.4	9.3	1.69	.301	6.85	11.31
10	Rustlers	1,021	156	1911	.291	44	107	156	5.08	486	73	5	7	1374.0	1,570	776	76	672	56		6,026	36	3.18	4.40	0.72	0.50	8.1	11.2	1.63	.315	6.69	10.28
11	Phillies	1,008	155	1923	.325	50	104	155	5.34	384	68	3	8	1376.1	1,801	816	100	549	38		6,332	41	2.51	3.59	0.70	0.65	6.1	8.7	1.71	.323	6.59	11.78
12	Orioles	981	162	2019	.333	54	108	162	5.59	1,248	0	0	27	1443.0	1,544	897	305	561	80	11	6,396	75	7.78	3.50	2.22	1.90	19.5	8.8	1.46	.295	6.12	9.63
13	Rangers	974	162	2000	.438	71	91	162	5.52	918	3	0	39	1429.0	1,683	876	202	661	63	40	6,559	40	5.78	4.16	1.39	1.27	14.0	10.1	1.64	.314	6.13	10.60
14	Royals	971	162	2006	.383	62	100	162	5.65	904	3	2	35	1426.1	1,648	896	213	637	60	45	6,434	85	5.70	4.02	1.42	1.34	14.1	9.9	1.60	.311	6.13	10.40
15	Rangers	969	162	2003	.438	71	91	162	5.67	1,009	4	2	43	1433.1	1,625	903	208	603	63	45	6,413	51	6.34	3.79	1.67	1.31	15.7	9.4	1.55	.313	6.08	10.20
16	Rangers	968	162	2001	.451	73	89	162	5.71	951	4	1	37	1438.1	1,670	913	222	596	63	33	6,469	70	5.95	3.73	1.60	1.39	14.7	9.2	1.58	.312	6.06	10.45
17	Rangers	967	162	2008	.488	79	83	162	5.37	963	6	2	36	1442.0	1,647	860	176	625	72	44	6,506	62	6.01	3.90	1.54	1.10	14.8	9.6	1.58	.315	6.04	10.28
18	Rockies	967	162	1993	.414	67	95	162	5.41	913	9	0	35	1431.1	1,664	860	181	609	41	66	6,471	82	5.74	3.83	1.50	1.14	14.1	9.4	1.59	.314	6.08	10.46
19	Rockies	964	162	1996	.512	83	79	162	5.59	932	5	1	34	1422.2	1,597	884	198	624	69	19	6,391	66	5.90	3.95	1.49	1.25	14.6	9.8	1.56	.306	6.10	10.10
20	Browns	962	156	1938	.362	55	97	156	5.80	632	71	3	7	1344.2	1,584	867	132	737	26		6,222	27	4.23	4.93	0.86	0.88	10.2	11.8	1.73	.309	6.44	10.60
21	Rockies	958	162	2019	.438	71	91	162	5.56	1,264	1	1	28	1448.2	1,576	895	270	589	57	33	6,423	63	7.85	3.66	2.15	1.68	19.7	9.2	1.49	.308	5.95	9.79
22	Indians	957	162	1987	.377	61	101	162	5.28	849	24	4	25	1422.2	1,566	835	219	606	50	28	6,395	74	5.37	3.83	1.40	1.39	13.3	9.5	1.53	.288	6.05	9.91
23	Orioles	956	162	2021	.321	52	110	162	5.84	1,234	1	1	26	1402.0	1,518	910	258	563	68	12	6,252	88	7.92	3.61	2.19	1.66	19.7	9.0	1.48	.305	6.14	9.74
24	Athletics	956	154	1938	.349	53	99	154	5.48	473	56	3	12	1324.0	1,573	806	142	599	18		6,085	28	3.22	4.07	0.79	0.97	7.8	9.8	1.64	.295	6.50	10.69
25	Phillies	956	152	1928	.283	43	109	152	5.61	402	42	4	13	1346.2	1,664	839	108	675	42		6,224	22	2.69	4.51	0.60	0.72	6.5	10.8	1.74	.311	6.39	11.12