most slugging percentage by a first baseman in a season

Lou Gehrig has the best slugging percentage by a first baseman in a season, with a slugging percentage of .765 in 1927.

Interpreted as:

most slugging percentage with a minimum of 3.1 PA per team game by a first baseman 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	Lou Gehrig L. Gehrig	.765	1927	NYY	155	584	149	218	52	18	47	173	109	3	84	10	8	717	447	117	21				.373	.474	1.240	199	110.9	.540	209	105.6
2	Mark McGwire M. McGwire	.752	1998	STL	155	509	130	152	21	0	70	147	162	6	155	1	0	681	383	91	0	4	28	8	.299	.470	1.222	176	91.7	.492	205	90.7
3	Jeff Bagwell J. Bagwell	.750	1994	HOU	110	400	104	147	32	2	39	116	65	4	65	15	4	479	300	73	0	10	14	12	.368	.451	1.201	123	62.6	.488	206	65.2
4	Jimmie Foxx J. Foxx	.749	1932	PHA	154	585	151	213	33	9	58	169	116	0	96	3	7	701	438	100	0				.364	.469	1.218	193	105.6	.522	198	95.8
5	Mark McGwire M. McGwire	.730	1996	OAK	130	423	104	132	21	0	52	113	116	8	112	0	0	548	309	73	0	1	16	14	.312	.467	1.198	142	71.8	.489	190	68.5
6	Frank Thomas F. Thomas	.729	1994	CWS	113	399	106	141	34	1	38	101	109	2	61	2	3	517	291	73	0	7	12	15	.353	.487	1.217	138	72.3	.499	205	71.9
7	Lou Gehrig L. Gehrig	.721	1930	NYY	154	581	143	220	42	17	41	173	101	3	63	12	14	703	419	100	18				.379	.473	1.194	193	94.5	.507	198	98.3
8	Lou Gehrig L. Gehrig	.706	1934	NYY	154	579	128	210	40	6	49	166	109	2	31	9	5	690	409	95	0				.363	.465	1.172	182	94.8	.511	194	90.9
9	Jimmie Foxx J. Foxx	.704	1938	BSA	149	565	139	197	33	9	50	175	119	0	76	5	4	685	398	92	1				.349	.462	1.166	178	91.7	.508	173	74.2
10	Jimmie Foxx J. Foxx	.703	1933	PHA	149	573	125	204	37	9	48	163	96	1	93	2	2	670	403	94	0				.356	.449	1.153	170	92.1	.510	189	79.8
11	Todd Helton T. Helton	.698	2000	COL	160	580	138	216	59	2	42	147	103	4	61	5	3	697	405	103	0	10	22	12	.372	.463	1.162	174	82.4	.476	161	58
12	Mark McGwire M. McGwire	.697	1999	STL	153	521	118	145	21	1	65	147	133	2	141	0	0	661	363	87	0	5	21	12	.278	.424	1.120	150	64.2	.453	169	61.5
13	Lou Gehrig L. Gehrig	.696	1936	NYY	155	579	167	205	37	7	49	152	130	7	46	3	4	719	403	93	3				.354	.478	1.174	192	97.6	.512	178	85.8
14	Jimmie Foxx J. Foxx	.694	1939	BSA	124	467	130	168	31	10	35	105	89	2	72	4	3	563	324	76	5			17	.360	.464	1.158	144	74.3	.507	181	63.5
15	Todd Helton T. Helton	.685	2001	COL	159	587	132	197	54	2	49	146	98	5	104	7	5	696	402	105	1	5	15	14	.336	.432	1.116	163	76.6	.457	160	54.8
16	Hank Greenberg H. Greenberg	.683	1938	DET	155	556	143	175	23	4	58	147	119	3	92	7	5	681	380	85	3				.315	.438	1.122	166	80.3	.489	162	62
17	Jim Thome J. Thome	.677	2002	CLE	147	480	101	146	19	2	52	118	122	5	139	1	2	613	325	73	0	6	18	5	.304	.445	1.122	142	68.3	.461	189	67.1
18	Albert Pujols A. Pujols	.671	2006	STL	143	535	119	177	33	1	49	137	92	4	50	7	2	634	359	83	0	3	28	20	.331	.431	1.102	142	62.6	.447	174	61.7
19	Hank Aaron H. Aaron	.669	1971	ATL	139	495	95	162	22	3	47	118	71	2	58	1	1	573	331	72	0	5	21	9	.327	.410	1.079	124	65.3	.466	191	57.2
20	Hank Greenberg H. Greenberg	.668	1937	DET	154	594	137	200	49	14	40	184	102	3	101	8	3	701	397	103	2				.337	.436	1.105	167	79.5	.483	164	65.3
21	Carlos Delgado C. Delgado	.664	2000	TOR	162	569	115	196	57	1	41	137	123	15	104	0	1	711	378	99	0	4	18	12	.344	.470	1.134	174	81	.471	179	76
22	Lou Gehrig L. Gehrig	.662	1931	NYY	155	619	163	211	31	15	46	185	117	0	56	17	12	738	410	92	2				.341	.446	1.108	179	87.7	.488	184	83.8
23	Norm Cash N. Cash	.662	1961	DET	159	535	119	193	22	8	41	132	124	9	85	11	5	672	354	71	2	2	19	16	.361	.487	1.148	168	88.3	.488	194	79.5
24	Derrek Lee D. Lee	.662	2005	CHC	158	594	120	199	50	3	46	107	85	5	109	15	3	691	393	99	0	7	23	12	.335	.418	1.080	150	67.4	.444	170	60.9
25	Jason Giambi J. Giambi	.660	2001	OAK	154	520	109	178	47	2	38	120	129	13	83	2	0	671	343	87	0	9	24	17	.342	.477	1.137	162	78.3	.465	193	78.7