The Oakland Athletics allowed the most runs by a team in May 2023, with 165 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	Athletics	165	May 2023	29	.207	6	23	5.54	225	0	1	255.0	249	157	49	120	16	7	1,129	10	7.94	4.24	1.88	1.73	19.9	10.6	1.45	.278	5.82	8.79
2	Rockies	148	May 2023	28	.536	15	13	5.13	192	0	8	244.0	265	139	36	106	10	0	1,076	11	7.08	3.91	1.81	1.33	17.8	9.9	1.52	.313	5.46	9.77
3	Brewers	144	May 2023	27	.407	11	16	4.91	215	0	4	233.0	238	127	43	88	14	1	1,026	11	8.30	3.40	2.44	1.66	21.0	8.6	1.40	.293	5.56	9.19
4	Mets	143	May 2023	29	.483	14	15	4.86	234	0	9	252.0	243	136	38	93	17	0	1,081	10	8.36	3.32	2.52	1.36	21.6	8.6	1.33	.293	5.11	8.68
5	Phillies	141	May 2023	26	.385	10	16	4.99	231	0	6	225.1	238	125	31	75	11	2	990	4	9.23	3.00	3.08	1.24	23.3	7.6	1.39	.322	5.63	9.51
6	Cubs	140	May 2023	28	.357	10	18	4.73	212	1	4	247.1	252	130	30	78	8	1	1,046	5	7.71	2.84	2.72	1.09	20.3	7.5	1.33	.309	5.09	9.17
7	Reds	139	May 2023	27	.519	14	13	4.97	231	0	11	241.0	246	133	36	97	9	2	1,049	6	8.63	3.62	2.38	1.34	22.0	9.2	1.42	.311	5.19	9.19
8	Angels	138	May 2023	28	.536	15	13	4.59	245	0	8	249.0	252	127	34	93	8	8	1,077	16	8.86	3.36	2.63	1.23	22.7	8.6	1.39	.313	4.99	9.11
9	Nationals	138	May 2023	29	.483	14	15	4.40	212	0	10	253.2	260	124	42	112	8	4	1,119	15	7.52	3.97	1.89	1.49	18.9	10.0	1.47	.293	4.90	9.22
10	Dodgers	133	May 2023	28	.643	18	10	4.49	236	0	7	248.2	224	124	38	85	10	6	1,051	7	8.54	3.08	2.78	1.38	22.5	8.1	1.24	.273	4.81	8.11
11	Orioles	131	May 2023	28	.571	16	12	4.25	244	0	9	256.0	258	121	37	93	6	5	1,091	12	8.58	3.27	2.62	1.30	22.4	8.5	1.37	.311	4.61	9.07
12	Royals	131	May 2023	27	.370	10	17	4.60	228	0	3	236.2	221	121	23	121	9	2	1,035	17	8.67	4.60	1.88	0.87	22.0	11.7	1.45	.303	4.98	8.40
13	Cardinals	130	May 2023	28	.536	15	13	4.16	223	0	9	251.0	264	116	25	94	14	1	1,099	10	8.00	3.37	2.37	0.90	20.3	8.6	1.43	.322	4.66	9.47
14	Rays	129	May 2023	29	.586	17	12	4.30	233	0	12	255.1	245	122	41	93	8	4	1,088	16	8.21	3.28	2.51	1.45	21.4	8.5	1.32	.286	4.55	8.64
15	Braves	129	May 2023	29	.517	15	14	3.94	276	0	7	258.0	241	113	31	97	15	3	1,103	8	9.63	3.38	2.85	1.08	25.0	8.8	1.31	.307	4.50	8.41
16	Pirates	127	May 2023	26	.308	8	18	4.49	228	1	1	226.2	219	113	29	90	6	2	974	13	9.05	3.57	2.53	1.15	23.4	9.2	1.36	.306	5.04	8.70
17	Tigers	125	May 2023	27	.593	16	11	4.03	217	0	8	241.0	239	108	28	68	5	3	1,024	9	8.10	2.54	3.19	1.05	21.2	6.6	1.27	.299	4.67	8.93
18	Red Sox	125	May 2023	26	.500	13	13	4.36	218	0	7	227.0	214	110	37	79	8	2	974	9	8.64	3.13	2.76	1.47	22.4	8.1	1.29	.280	4.96	8.48
19	Blue Jays	125	May 2023	28	.393	11	17	4.00	245	1	3	247.2	235	110	39	112	12	5	1,079	11	8.90	4.07	2.19	1.42	22.7	10.4	1.40	.292	4.54	8.54
20	White Sox	123	May 2023	29	.517	15	14	3.96	250	0	7	259.0	211	114	36	107	13	2	1,087	8	8.69	3.72	2.34	1.25	23.0	9.8	1.23	.257	4.27	7.33
21	Marlins	120	May 2023	27	.481	13	14	4.14	267	0	7	241.1	230	111	27	103	8	8	1,038	6	9.96	3.84	2.59	1.01	25.7	9.9	1.38	.321	4.48	8.58
22	Diamondbacks	119	May 2023	27	.630	17	10	3.85	238	0	8	243.1	230	104	29	87	4	4	1,030	9	8.80	3.22	2.74	1.07	23.1	8.4	1.30	.299	4.40	8.51
23	Yankees	119	May 2023	29	.655	19	10	3.57	254	0	10	264.2	230	105	30	105	15	1	1,124	6	8.64	3.57	2.42	1.02	22.6	9.3	1.27	.278	4.05	7.82
24	Giants	110	May 2023	29	.586	17	12	3.39	247	0	14	255.0	224	96	23	85	14	4	1,060	13	8.72	3.00	2.91	0.81	23.3	8.0	1.21	.291	3.88	7.91
25	Rangers	109	May 2023	27	.667	18	9	3.95	209	0	6	239.1	221	105	31	76	9	2	997	5	7.86	2.86	2.75	1.17	21.0	7.6	1.24	.283	4.10	8.31