The New York Mets got their most hits in a game against the Pirates on April 17, 1976, with 21 hits.

Interpreted as:

mets most hits in a regular-season game vs pirates

	TEAM	H	DATE	TM		OPP	RESULT	AB	R	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mets	21	4/17/1976	NYM	@	PIT	W 17-1	48	17	6	0	2	17	2	0	5	0	1	51	33	8	1	0	0	0	.438	.460	.688	1.148
2	Mets	20	4/14/2000	NYM	@	PIT	W 8-5	48	8	3	1	3	8	9	0	7	0	2	59	34	7	1	1	1	1	.417	.500	.708	1.208
3	Mets	19	6/15/2016	NYM	vs	PIT	W 11-2	43	11	4	0	2	11	2	0	8	0	0	45	29	6	0	0	0	0	.442	.467	.674	1.141
4	Mets	18	6/22/1997	NYM	vs	PIT	W 12-9	42	12	3	0	3	12	4	2	9	0	1	50	30	6	1	1	0	1	.429	.490	.714	1.204
5	Mets	18	7/7/1995	NYM	@	PIT	W 9-8	43	9	0	1	2	9	2	0	6	0	0	46	26	3	1	0	0	1	.419	.444	.605	1.049
6	Mets	18	6/6/1992	NYM	@	PIT	W 15-1	42	15	3	0	3	14	6	0	5	0	1	49	30	6	0	1	0	1	.429	.490	.714	1.204
7	Mets	18	9/21/1985	NYM	vs	PIT	W 12-1	41	12	3	1	1	11	7	0	3	1	0	48	26	5	0	0	1	0	.439	.521	.634	1.155
8	Mets	18	8/17/1967	NYM	@	PIT	L 5-6	56	5	2	1	0	5	1	0	10	0	0	59	22	3	2	0	1	1	.321	.333	.393	.726
9	Mets	17	9/7/2022	NYM	@	PIT	W 10-0	42	10	6	0	0	9	7	1	8	1	0	50	23	6	0	0	0	2	.405	.500	.548	1.048
10	Mets	17	5/9/2009	NYM	vs	PIT	W 10-1	40	10	2	1	1	10	1	0	4	1	0	41	24	4	0	0	0	1	.425	.439	.600	1.039
11	Mets	17	8/7/1993	NYM	vs	PIT	W 10-8	36	10	4	1	2	10	5	1	2	0	2	43	29	7	1	0	1	1	.472	.548	.806	1.353
12	Mets	17	5/18/1993	NYM	vs	PIT	L 8-10	40	8	2	1	0	8	2	0	2	1	0	43	21	3	0	1	0	2	.425	.442	.525	.967
13	Mets	17	8/5/1976	NYM	@	PIT	W 7-4	40	7	1	0	1	6	4	0	6	1	1	46	21	2	2	0	0	2	.425	.477	.525	1.002
14	Mets	17	8/8/1970	NYM	@	PIT	W 12-9	40	12	4	1	1	11	9	1	9	3	1	51	26	6	0	1	1	0	.425	.529	.650	1.179
15	Mets	16	8/4/2019	NYM	@	PIT	W 13-2	43	13	6	0	3	11	2	1	11	0	0	46	31	9	0	0	0	0	.372	.413	.721	1.134
16	Mets	16	8/1/1996	NYM	vs	PIT	L 9-13	43	9	2	0	1	9	3	0	11	1	0	46	21	3	0	0	0	0	.372	.413	.488	.901
17	Mets	16	10/2/1991	NYM	@	PIT	W 9-6	50	9	1	0	1	9	4	0	8	2	0	54	20	2	0	0	0	0	.320	.370	.400	.770
18	Mets	16	4/15/1991	NYM	@	PIT	W 9-3	41	9	0	1	1	8	4	0	10	1	0	45	21	2	0	0	0	2	.390	.444	.512	.957
19	Mets	16	9/27/1987	NYM	vs	PIT	W 12-3	38	12	5	0	1	12	4	1	5	1	0	44	24	6	1	0	0	0	.421	.488	.632	1.120
20	Mets	16	7/4/1969	NYM	@	PIT	W 11-6	42	11	4	0	1	11	7	0	6	1	0	49	23	5	0	0	0	2	.381	.469	.548	1.017
21	Mets	16	8/17/1967	NYM	@	PIT	W 6-5	38	6	0	1	1	6	5	0	3	0	0	44	21	2	1	0	2	0	.421	.488	.553	1.041
22	Mets	16	8/13/1967	NYM	vs	PIT	W 11-9	36	11	2	0	1	11	2	0	4	0	0	42	21	3	1	3	1	0	.444	.439	.583	1.022
23	Mets	15	5/30/2011	NYM	vs	PIT	W 7-3	37	7	2	0	0	6	2	1	4	0	0	41	17	2	1	0	0	2	.405	.450	.459	.909
24	Mets	15	8/20/2010	NYM	@	PIT	W 7-2	40	7	2	0	1	6	1	0	1	2	1	41	20	3	0	0	0	1	.375	.390	.500	.890
25	Mets	15	7/2/2009	NYM	@	PIT	W 9-8	43	9	3	0	1	9	6	2	3	3	0	52	21	4	0	1	0	1	.349	.442	.488	.931