Dominic Smith has the highest slugging percentage for the Mets in a season, with a slugging percentage of .616 in 2020.

Interpreted as:

highest slugging with a minimum of 1.55 PA per team game by a met in a season

	NAME	SLG	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Dominic Smith D. Smith	.616	2020	NYM	50	177	27	56	21	1	10	42	14	5	45	0	0	199	109	32	0	3	0	2	.316	.377	.993	40	15.5	.412	166	16.7
2	Mike Piazza M. Piazza	.614	2000	NYM	136	482	90	156	26	0	38	113	58	3	69	4	2	545	296	64	0	2	10	15	.324	.398	1.012	110	38.9	.423	153	39.1
3	Mike Piazza M. Piazza	.607	1998	NYM	109	394	67	137	33	0	23	76	47	2	53	1	0	446	239	56	0	3	10	12	.348	.417	1.024	93	37.4	.432	168	38.4
4	Bobby Bonilla B. Bonilla	.599	1995	NYM	80	317	49	103	25	4	18	53	31	1	48	0	3	351	190	47	0	2	10	11	.325	.385	.984	67	23.1	.412	154	23.9
5	Carlos Beltran C. Beltran	.594	2006	NYM	140	510	127	140	38	1	41	116	95	4	99	18	3	617	303	80	1	7	6	6	.275	.388	.982	118	40.3	.408	149	39.4
6	Pete Alonso P. Alonso	.585	2025	NYM	69	258	41	77	21	1	17	63	35	9	63	0	2	305	151	39	0	3	2	11	.298	.397	.982	60	25.3	.418	175	26.4
7	Pete Alonso P. Alonso	.583	2019	NYM	161	597	103	155	30	2	53	120	72	21	183	1	0	693	348	85	0	3	6	13	.260	.358	.941	126	38.4	.384	144	40.3
8	Darryl Strawberry D. Strawberry	.583	1987	NYM	154	532	108	151	32	5	39	104	97	7	122	36	12	640	310	76	0	4	13	4	.284	.398	.981	124	45.8	.412	159	47.5
9	Jeromy Burnitz J. Burnitz	.581	2003	NYM	65	234	38	64	18	0	18	45	21	4	55	1	4	259	136	36	0	0	6	4	.274	.344	.925	44	12	.383	135	11.5
10	Mike Piazza M. Piazza	.575	1999	NYM	141	534	100	162	25	0	40	124	51	1	70	2	2	593	307	65	0	7	11	27	.303	.361	.936	102	25.1	.390	131	25
11	Mike Piazza M. Piazza	.573	2001	NYM	141	503	81	151	29	0	36	94	67	2	87	0	2	573	288	65	0	1	19	20	.300	.384	.957	104	32.9	.395	143	32
12	Bernard Gilkey B. Gilkey	.562	1996	NYM	153	571	108	181	44	3	30	117	73	4	125	17	9	656	321	77	0	8	7	18	.317	.393	.955	124	39.3	.405	152	43.3
13	Howard Johnson H. Johnson	.559	1989	NYM	153	571	104	164	41	3	36	101	77	1	126	41	8	655	319	80	0	6	8	4	.287	.369	.928	117	45.6	.406	166	47.4
14	Darryl Strawberry D. Strawberry	.557	1985	NYM	111	393	78	109	15	4	29	79	73	1	96	26	11	470	219	48	0	3	13	9	.277	.389	.947	85	32	.405	163	33.6
15	Michael Conforto M. Conforto	.555	2017	NYM	109	373	72	104	20	1	27	68	57	8	113	2	0	440	207	48	0	2	5	3	.279	.384	.939	80	26.4	.392	147	26.7
16	John Olerud J. Olerud	.551	1998	NYM	160	557	91	197	36	4	22	93	96	4	73	2	2	665	307	62	1	7	11	15	.354	.447	.998	137	54.6	.430	167	56.1
17	Todd Hundley T. Hundley	.550	1996	NYM	153	540	85	140	32	1	41	112	79	3	146	1	3	624	297	74	0	2	15	9	.259	.356	.906	103	22.8	.378	134	26.7
18	Todd Hundley T. Hundley	.549	1997	NYM	132	417	78	114	21	2	30	86	83	3	116	2	3	508	229	53	0	5	16	10	.273	.394	.943	90	27.1	.396	143	27.7
19	Jeff McNeil J. McNeil	.548	2025	NYM	38	115	13	31	5	3	7	22	17	1	12	1	0	135	63	15	0	2	2	3	.270	.363	.911	23	7.5	.384	151	8
20	Carlos Delgado C. Delgado	.548	2006	NYM	144	524	89	139	30	2	38	114	74	10	120	0	0	618	287	70	0	10	11	12	.265	.361	.909	101	23.8	.377	128	22.9
21	David Wright D. Wright	.546	2007	NYM	160	604	113	196	42	1	30	107	94	6	115	34	5	711	330	73	0	7	6	14	.325	.416	.963	137	49.1	.413	151	47.4
22	Tim Teufel T. Teufel	.545	1987	NYM	97	299	55	92	29	0	14	61	44	2	53	3	2	350	163	43	3	2	2	7	.308	.398	.943	66	22.9	.405	154	23.9
23	Darryl Strawberry D. Strawberry	.545	1988	NYM	153	543	101	146	27	3	39	101	85	3	127	29	14	640	296	69	0	9	21	6	.269	.366	.911	107	37.6	.390	160	41.5
24	Mike Piazza M. Piazza	.544	2002	NYM	135	478	69	134	23	2	33	98	57	3	82	0	3	541	260	58	0	3	9	26	.280	.359	.903	89	24.5	.381	136	24.4
25	Robinson Cano R. Cano	.544	2020	NYM	49	171	23	54	9	0	10	30	9	1	24	0	0	182	93	19	0	1	1	7	.316	.352	.896	32	8.7	.376	142	9.9