Larry Walker had the highest slugging percentage in 1999, with a slugging percentage of .710.

Interpreted as:

highest slugging with a minimum of 3.1 PA per team game by a player avg1990 to 1999

	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	Larry Walker L. Walker	.710	1999	COL	127	438	108	166	26	4	37	115	57	12	52	11	4	513	311	67	0	6	8	12	.379	.458	1.168	131	64.1	.485	167	46.6
2	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
3	Manny Ramirez M. Ramirez	.663	1999	CLE	147	522	131	174	34	3	44	165	96	13	131	2	4	640	346	81	0	9	9	12	.333	.442	1.105	149	65.7	.459	172	61.8
4	Sammy Sosa S. Sosa	.635	1999	CHC	162	625	114	180	24	2	63	141	78	3	171	7	8	712	397	89	0	6	8	17	.288	.367	1.002	138	45.2	.414	143	41.3
5	Chipper Jones C. Jones	.633	1999	ATL	157	567	116	181	41	1	45	110	126	2	94	25	3	701	359	87	0	6	18	20	.319	.441	1.074	156	64.5	.447	165	61.6
6	Rafael Palmeiro R. Palmeiro	.630	1999	TEX	158	565	96	183	30	1	47	148	97	3	69	2	4	674	356	78	0	9	14	13	.324	.420	1.050	144	55.8	.436	156	50.9
7	Brian Giles B. Giles	.614	1999	PIT	141	521	109	164	33	3	39	115	95	3	80	6	2	627	320	75	0	8	7	14	.315	.418	1.032	132	50.1	.433	154	45.9
8	Nomar Garciaparra N. Garciaparra	.603	1999	BOS	135	532	103	190	42	4	27	104	51	8	39	14	3	595	321	73	0	4	7	11	.357	.418	1.022	125	47.8	.434	157	45
9	Juan Gonzalez J. Gonzalez	.601	1999	TEX	144	562	114	183	36	1	39	128	51	4	105	3	3	629	338	76	0	12	7	10	.326	.378	.980	119	37.1	.409	139	32.4
10	Vladimir Guerrero V. Guerrero	.600	1999	MON	160	610	102	193	37	5	42	131	55	7	62	14	7	674	366	84	0	2	14	18	.316	.378	.978	127	39.5	.408	139	35.8
11	Jeff Bagwell J. Bagwell	.591	1999	HOU	162	562	143	171	35	0	42	126	149	11	127	30	11	729	332	77	0	7	16	18	.304	.454	1.045	159	63.9	.442	166	65.7
12	Shawn Green S. Green	.588	1999	TOR	153	614	134	190	45	0	42	123	66	11	117	20	7	696	361	87	0	5	4	13	.309	.384	.972	133	42.4	.411	142	39.1
13	Todd Helton T. Helton	.587	1999	COL	159	578	114	185	39	5	35	113	68	6	77	7	6	656	339	79	0	4	6	14	.320	.395	.981	128	42.4	.415	123	20.1
14	Alex Rodriguez A. Rodriguez	.586	1999	SEA	129	502	110	143	25	0	42	111	56	5	109	21	7	572	294	67	1	8	2	12	.285	.357	.943	101	27	.395	137	27.9
15	Ken Griffey Jr. K. Griffey Jr.	.576	1999	SEA	160	606	123	173	26	3	48	134	91	7	108	24	7	706	349	77	0	2	17	8	.285	.384	.960	129	37.1	.401	141	38.3
16	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
17	Carl Everett C. Everett	.571	1999	HOU	123	464	86	151	33	3	25	108	50	11	94	27	7	535	265	61	2	8	5	5	.325	.398	.969	102	32.4	.411	146	33.7
18	Carlos Delgado C. Delgado	.571	1999	TOR	152	573	113	156	39	0	44	134	86	15	141	1	1	681	327	83	0	7	7	11	.272	.377	.948	123	34.5	.399	134	31.3
19	Jeromy Burnitz J. Burnitz	.561	1999	MIL	130	467	87	126	33	2	33	103	91	16	124	7	3	580	262	68	0	6	7	11	.270	.402	.963	110	34	.408	139	30.9
20	Ivan Rodriguez I. Rodriguez	.558	1999	TEX	144	600	116	199	29	1	35	113	24	1	64	25	12	630	335	65	0	5	2	31	.332	.356	.914	108	26	.388	125	21.3
21	Jay Bell J. Bell	.557	1999	ARI	151	589	132	170	32	6	38	112	82	4	132	7	4	688	328	76	4	9	2	9	.289	.374	.931	122	32.3	.395	129	26.8
22	John Jaha J. Jaha	.556	1999	OAK	142	457	93	126	23	0	35	111	101	9	129	2	0	570	254	58	0	3	2	14	.276	.414	.970	112	37.7	.417	149	37.2
23	Edgar Martinez E. Martinez	.554	1999	SEA	142	502	86	169	35	1	24	86	97	6	99	7	2	608	278	60	0	3	6	12	.337	.447	1.001	128	48.8	.433	161	49.8
24	Fernando Tatis F. Tatis	.553	1999	STL	149	537	104	160	31	2	34	107	82	16	128	21	9	639	297	67	0	4	4	11	.298	.404	.957	122	38.7	.411	142	36
25	Jason Giambi J. Giambi	.553	1999	OAK	158	575	115	181	36	1	33	123	105	7	106	1	1	695	318	70	0	8	6	11	.315	.422	.975	137	46.6	.418	149	46