Matt Olson had the highest slugging percentage by a first baseman in 2023, with a slugging percentage of .604.

Interpreted as:

highest slg with a minimum of 3.1 PA per team game as first baseman 2023

	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	Matt Olson M. Olson	.604	2023	ATL	162	608	127	172	27	3	54	139	104	4	167	1	0	720	367	84	0	4	8	13	.283	.389	.993	144	56.4	.413	161	54.1
2	Freddie Freeman F. Freeman	.567	2023	LAD	161	637	131	211	59	2	29	102	72	16	121	23	1	730	361	90	0	5	12	14	.331	.410	.976	145	55.9	.411	162	56.2
3	Yandy Díaz Y. Díaz	.522	2023	TBR	137	525	95	173	35	0	22	78	65	8	94	0	1	600	274	57	0	2	0	16	.330	.410	.932	115	41.5	.402	164	45.7
4	Pete Alonso P. Alonso	.504	2023	NYM	154	568	92	123	21	2	46	118	65	21	151	4	1	658	286	69	0	4	6	17	.217	.318	.821	95	14.9	.346	121	16.8
5	Christian Walker C. Walker	.497	2023	ARI	157	582	86	150	36	2	33	103	62	8	127	11	0	660	289	71	0	8	3	13	.258	.333	.830	98	17.9	.351	119	15.7
6	Spencer Steer S. Steer	.464	2023	CIN	156	582	74	158	37	3	23	86	68	11	139	15	3	665	270	63	0	4	0	9	.271	.356	.820	101	20.1	.355	117	13.9
7	Paul Goldschmidt P. Goldschmidt	.447	2023	STL	154	593	89	159	31	0	25	80	87	3	161	11	2	686	265	56	0	3	6	12	.268	.363	.810	102	18.1	.350	122	18.4
8	Spencer Torkelson S. Torkelson	.446	2023	DET	159	606	88	141	34	1	31	94	67	6	171	3	0	684	270	66	0	5	1	15	.233	.313	.758	88	4.2	.326	108	6.4
9	Vladimir Guerrero Jr. V. Guerrero Jr.	.444	2023	TOR	156	602	78	159	30	0	26	94	67	9	100	5	3	682	267	56	0	4	5	23	.264	.345	.788	95	12.1	.340	118	14.3
10	Andrew Vaughn A. Vaughn	.429	2023	CWS	152	566	67	146	30	2	21	80	36	11	129	0	0	615	243	53	0	2	0	15	.258	.314	.743	76	1.5	.321	103	2
11	Carlos Santana C. Santana	.429	2023	TOT	146	550	78	132	33	1	23	86	65	0	104	6	0	619	236	57	0	4	0	11	.240	.318	.747	78	2.5	.323	100	0.3
12	LaMonte Wade Jr. L. Wade Jr.	.417	2023	SFG	135	429	64	110	14	2	17	45	76	6	95	2	0	519	179	33	4	4	3	4	.256	.373	.790	76	12.4	.347	121	13.2
13	Nathaniel Lowe N. Lowe	.414	2023	TEX	161	623	89	163	38	3	17	82	93	5	165	1	0	724	258	58	0	3	2	22	.262	.360	.775	101	13.1	.340	117	14.6
14	José Abreu J. Abreu	.383	2023	HOU	141	540	62	128	23	1	18	90	42	6	130	0	1	594	207	42	0	6	1	16	.237	.296	.680	61	-11.5	.295	87	-9.5
15	Jake Cronenworth J. Cronenworth	.378	2023	SDP	127	458	54	105	24	7	10	48	46	11	97	6	1	521	173	41	1	5	2	8	.229	.312	.689	56	-7.5	.301	91	-6
16	Ty France T. France	.368	2023	SEA	158	587	79	148	32	0	12	58	43	34	117	1	0	665	216	44	0	1	0	25	.252	.338	.706	80	-1.2	.316	106	5
17	Dominic Smith D. Smith	.366	2023	WSH	153	527	57	134	21	1	12	46	47	10	91	1	1	586	193	34	0	2	1	12	.254	.326	.692	66	-5.8	.306	91	-6.3