The New York Mets had their best record in a season in the month of May in 1972, with a record of 21-7.

Interpreted as:

best mets records in a regular season in may of all-time

	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	21-7	1972	.750	28	21	7	951	118	234	39	7	21	111	114	7	181	8	11	1,090	350	67	13	5	14	23	.246	.330	.368	.698
2	Mets	18-8	1998	.692	26	18	8	864	137	243	52	6	21	132	85	8	166	15	10	979	370	79	14	8	10	27	.281	.348	.428	.776
3	Mets	19-9	2009	.679	28	19	9	951	138	266	59	4	20	133	122	10	163	38	13	1,110	393	83	15	12	13	25	.280	.363	.413	.777
4	Mets	19-9	2007	.679	28	19	9	941	127	253	42	4	28	119	100	8	176	34	7	1,074	387	74	16	9	12	18	.269	.341	.411	.752
5	Mets	19-9	1988	.679	28	19	9	940	122	244	42	3	19	112	98	5	147	31	6	1,066	349	64	13	10	19	19	.260	.330	.371	.701
6	Mets	18-9	1997	.667	27	18	9	909	138	254	48	7	28	132	95	7	150	16	13	1,034	400	83	11	12	5	19	.279	.348	.440	.788
7	Mets	18-9	1986	.667	27	18	9	894	114	216	46	5	21	108	99	6	168	21	10	1,018	335	72	8	11	12	19	.242	.318	.375	.693
8	Mets	19-10	2022	.655	29	19	10	998	168	277	48	10	29	162	85	13	213	11	3	1,115	432	87	4	15	7	19	.278	.338	.433	.770
9	Mets	17-9	2021	.654	26	17	9	840	109	193	34	2	26	104	86	10	219	13	3	941	309	62	3	2	5	12	.230	.308	.368	.676
10	Mets	17-11	1982	.607	28	17	11	954	122	260	34	3	17	112	81	8	175	26	8	1,063	351	54	13	7	12	24	.273	.332	.368	.700
11	Mets	15-10	1985	.600	25	15	10	807	82	177	28	5	16	75	83	1	127	24	8	910	263	49	11	8	11	15	.219	.290	.326	.616
12	Mets	15-11	1971	.577	26	15	11	926	106	243	47	8	21	99	73	5	156	11	11	1,023	369	76	14	5	11	18	.262	.318	.398	.717
13	Mets	16-12	2006	.571	28	16	12	1,010	137	256	62	4	37	128	105	15	192	23	7	1,154	437	103	20	4	15	11	.253	.332	.433	.764
14	Mets	14-11	1991	.560	25	14	11	859	115	226	41	4	22	110	85	1	138	36	14	963	341	67	11	7	12	12	.263	.328	.397	.725
15	Mets	15-12	2025	.556	27	15	12	884	107	220	40	5	30	104	102	19	218	25	4	1,019	360	75	3	11	6	29	.249	.336	.407	.743
16	Mets	15-12	2004	.556	27	15	12	934	124	231	58	2	34	116	106	10	207	14	2	1,067	395	94	14	3	16	22	.247	.330	.423	.752
17	Mets	15-13	2012	.536	28	15	13	914	129	231	61	3	18	124	96	7	217	15	6	1,038	352	82	17	4	8	21	.253	.327	.385	.712
18	Mets	15-13	2005	.536	28	15	13	945	123	242	48	9	31	114	93	5	194	22	10	1,056	401	88	7	6	10	19	.256	.324	.424	.748
19	Mets	14-13	2011	.519	27	14	13	919	102	239	49	9	14	96	110	1	192	29	6	1,047	348	72	11	6	16	22	.260	.338	.379	.717
20	Mets	15-14	1970	.517	29	15	14	965	124	225	37	11	22	114	144	7	212	34	12	1,135	350	70	8	11	11	19	.233	.334	.363	.696
21	Mets	14-14	2003	.500	28	14	14	922	124	239	55	6	24	115	113	6	166	8	7	1,056	378	85	10	5	7	45	.259	.342	.410	.752
22	Mets	14-14	1994	.500	28	14	14	942	130	234	39	6	32	125	88	15	203	8	3	1,068	381	77	12	11	9	16	.248	.319	.404	.724
23	Mets	13-13	1980	.500	26	13	13	874	97	229	39	8	5	87	83	6	122	21	14	988	299	52	19	6	9	22	.262	.328	.342	.670
24	Mets	12-12	1975	.500	24	12	12	794	91	209	40	5	15	87	69	6	82	4	4	885	304	60	9	7	10	24	.263	.324	.383	.707
25	Mets	12-12	1969	.500	24	12	12	802	98	198	27	10	20	90	84	5	146	12	5	909	305	57	11	7	13	17	.247	.320	.380	.700