The New York Mets launched their most home runs in a game versus the Phillies on August 24, 2015, with 8 home runs.

Interpreted as:

most career home runs in a regular-season game “against” mets

	TEAM	HR	DATE	TM		OPP	RESULT	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mets	8	8/24/2015	NYM	@	PHI	W 16-7	47	16	20	7	0	16	2	1	8	0	0	50	51	15	0	0	0	0	.426	.460	1.085	1.545
2	Mets	7	6/21/2025	NYM	@	PHI	W 11-4	42	11	15	1	0	11	3	0	6	0	0	45	37	8	0	0	0	0	.357	.400	.881	1.281
3	Mets	7	7/19/2021	NYM	@	CIN	W 15-11	49	15	18	1	0	15	3	0	10	1	0	52	40	8	0	0	0	1	.367	.404	.816	1.220
4	Mets	7	4/11/2017	NYM	@	PHI	W 14-4	47	14	20	7	0	14	5	0	9	0	0	52	48	14	0	0	1	0	.426	.481	1.021	1.502
5	Mets	7	4/19/2005	NYM	@	PHI	W 16-4	42	16	15	1	1	16	6	1	9	0	0	49	39	9	0	0	2	0	.357	.449	.929	1.378
6	Mets	6	8/29/2025	NYM	vs	MIA	W 19-9	41	19	18	3	0	19	7	0	5	1	0	48	39	9	0	0	0	1	.439	.521	.951	1.472
7	Mets	6	8/23/2025	NYM	@	ATL	W 9-2	38	9	11	0	0	9	6	1	5	4	0	45	29	6	0	0	0	1	.289	.400	.763	1.163
8	Mets	6	8/12/2025	NYM	vs	ATL	W 13-5	40	13	16	3	0	13	3	0	4	0	0	43	37	9	0	0	0	0	.400	.442	.925	1.367
9	Mets	6	6/8/2025	NYM	@	COL	W 13-5	43	13	17	2	0	13	6	0	10	2	0	49	37	8	0	0	0	1	.395	.469	.860	1.330
10	Mets	6	6/9/2021	NYM	@	BAL	W 14-1	40	14	16	4	0	14	2	1	8	0	0	43	38	10	0	0	0	3	.400	.442	.950	1.392
11	Mets	6	9/12/2019	NYM	vs	ARI	W 11-1	35	11	11	0	0	11	3	0	7	0	0	38	29	6	0	0	0	1	.314	.368	.829	1.197
12	Mets	6	4/19/2016	NYM	@	PHI	W 11-1	40	11	12	3	0	11	3	1	7	0	0	44	33	9	0	0	0	0	.300	.364	.825	1.189
13	Mets	6	6/15/1999	NYM	@	CIN	W 11-3	38	11	12	2	0	11	5	0	9	1	0	43	32	8	0	0	0	0	.316	.395	.842	1.237
14	Mets	6	4/4/1988	NYM	@	MON	W 10-6	37	10	13	0	0	10	6	0	7	1	2	43	31	6	0	0	1	1	.351	.442	.838	1.280
15	Mets	5	7/24/2024	NYM	@	NYY	W 12-3	41	12	14	3	0	11	4	0	6	0	0	46	32	8	0	1	0	0	.341	.391	.780	1.172
16	Mets	5	7/12/2024	NYM	vs	COL	W 7-6	33	7	10	2	0	7	4	1	7	1	1	38	27	7	0	0	0	0	.303	.395	.818	1.213
17	Mets	5	9/5/2023	NYM	@	WSH	W 11-5	35	11	11	1	1	11	1	2	3	1	0	40	29	7	1	1	0	1	.314	.359	.829	1.188
18	Mets	5	5/29/2021	NYM	vs	ATL	W 13-2	38	13	13	1	0	13	3	1	12	0	0	42	29	6	0	0	0	0	.342	.405	.763	1.168
19	Mets	5	9/6/2020	NYM	vs	PHI	W 14-1	42	14	17	7	0	13	2	2	14	0	1	46	39	12	0	0	1	0	.405	.457	.929	1.385
20	Mets	5	9/11/2019	NYM	vs	ARI	W 9-0	34	9	11	4	0	9	4	1	5	2	0	39	30	9	0	0	0	1	.324	.410	.882	1.293
21	Mets	5	5/24/2019	NYM	vs	DET	L 8-9	37	8	11	3	0	8	2	0	7	0	0	39	29	8	0	0	0	1	.297	.333	.784	1.117
22	Mets	5	4/6/2019	NYM	vs	WSH	W 6-5	32	6	11	2	0	6	2	1	10	1	2	35	28	7	0	0	0	1	.344	.400	.875	1.275
23	Mets	5	8/13/2018	NYM	@	NYY	W 8-5	41	8	15	1	0	7	2	1	12	1	1	44	31	6	0	0	0	0	.366	.409	.756	1.165
24	Mets	5	6/6/2017	NYM	@	TEX	L 8-10	42	8	17	1	0	8	6	0	5	1	0	48	33	6	0	0	0	2	.405	.479	.786	1.265
25	Mets	5	7/3/2016	NYM	vs	CHC	W 14-3	46	14	22	3	0	14	4	2	8	0	0	52	40	8	0	0	0	0	.478	.538	.870	1.408