The New York Mets had their worst record in a season in the month of June in 2018, with a record of 5-21.

Interpreted as:

mets worst june record in a regular season in history

	TEAM	REC	SEASON	W%	G	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mets	5-21	2018	.192	26	5	21	868	89	182	42	4	27	86	93	11	236	9	3	984	313	73	6	6	7	23	.210	.292	.361	.653
2	Mets	6-21	1993	.222	27	6	21	930	107	239	37	6	22	97	53	5	145	17	4	1,016	354	65	20	8	6	19	.257	.298	.381	.679
3	Mets	2-7	1981	.222	9	2	7	295	28	66	7	2	4	22	27	1	60	10	2	332	89	13	6	3	3	5	.224	.288	.302	.590
4	Mets	8-23	1962	.258	31	8	23	1,027	112	239	33	7	18	107	132	6	212	13	2	1,189	340	58	12	12	5	29	.233	.320	.331	.651
5	Mets	8-22	1964	.267	31	8	22	1,035	103	252	33	2	23	99	76	8	169	4	5	1,133	358	58	10	4	6	26	.243	.299	.346	.645
6	Mets	7-19	2023	.269	26	7	19	865	115	197	35	2	36	114	72	18	231	23	1	965	344	73	3	7	1	21	.228	.298	.398	.696
7	Mets	9-21	1965	.300	30	9	21	991	75	211	34	8	18	70	60	5	222	5	7	1,072	315	60	11	5	9	14	.213	.260	.318	.578
8	Mets	9-18	2009	.333	27	9	18	913	108	236	57	2	16	101	84	8	136	22	3	1,025	345	75	12	8	5	28	.258	.324	.378	.702
9	Mets	9-18	1994	.333	27	9	18	900	121	225	34	7	24	111	72	15	171	9	7	1,015	345	65	18	10	7	18	.250	.313	.383	.696
10	Mets	9-18	1982	.333	27	9	18	920	85	213	35	5	14	81	75	2	179	14	6	1,015	300	54	11	7	7	16	.232	.289	.326	.615
11	Mets	10-18	2019	.357	28	10	18	974	140	260	45	1	48	137	83	15	224	17	1	1,082	451	94	4	6	3	30	.267	.332	.463	.795
12	Mets	10-18	1978	.357	28	10	18	944	96	245	35	4	18	89	83	0	143	13	8	1,051	342	57	13	11	12	23	.260	.316	.362	.678
13	Mets	10-17	1995	.370	27	10	17	948	118	251	28	9	25	113	74	7	185	11	4	1,050	372	62	12	9	7	19	.265	.320	.392	.712
14	Mets	11-18	1985	.379	29	11	18	978	96	235	33	3	24	90	86	5	153	9	12	1,087	346	60	10	8	12	30	.240	.303	.354	.656
15	Mets	11-18	1967	.379	29	11	18	974	85	230	33	5	16	77	66	10	184	16	6	1,068	321	54	10	8	17	26	.236	.289	.330	.619
16	Mets	10-16	2003	.385	26	10	16	889	117	225	37	4	28	113	55	7	158	9	6	968	354	69	11	6	5	14	.253	.300	.398	.698
17	Mets	10-16	1974	.385	26	10	16	888	67	201	35	3	14	62	78	4	107	5	2	988	284	52	15	3	8	28	.226	.291	.320	.611
18	Mets	11-17	2014	.393	28	11	17	946	105	235	56	0	23	101	92	7	219	18	7	1,069	360	79	13	11	11	24	.248	.316	.381	.697
19	Mets	11-17	1992	.393	28	11	17	910	104	212	54	2	19	99	108	6	159	27	12	1,044	327	75	15	5	6	16	.233	.317	.359	.676
20	Mets	11-17	1973	.393	28	11	17	935	91	225	44	5	13	86	75	2	134	7	2	1,027	318	62	8	7	3	20	.241	.296	.340	.636
21	Mets	11-17	1963	.393	28	11	17	908	93	195	23	7	16	81	93	8	192	8	9	1,028	280	46	13	6	12	29	.215	.292	.308	.600
22	Mets	13-18	1983	.419	31	13	18	1,091	112	286	40	5	19	105	88	4	179	26	14	1,205	393	64	18	4	13	34	.262	.318	.360	.679
23	Mets	11-15	2013	.423	26	11	15	910	99	210	46	4	24	92	71	10	219	14	7	1,005	336	74	7	7	5	23	.231	.292	.369	.661
24	Mets	11-15	2002	.423	26	11	15	874	106	228	36	5	27	98	70	12	163	12	8	974	355	68	15	3	10	19	.261	.323	.406	.729
25	Mets	14-19	1966	.424	33	14	19	1,099	103	251	31	3	25	95	99	8	195	15	15	1,223	363	59	11	6	9	22	.228	.295	.330	.626