Andy Van Slyke has the best career slugging percentage with 50+ at-bats against Greg Maddux, with a slugging percentage of .627.

Interpreted as:

best slg by a player vs Greg Maddux min 50 at bats

	NAME	SLG	AB	G	H	2B	3B	HR	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	OPS
1	Andy Van Slyke A. Van Slyke	.627	67	24	23	7	0	4	11	11	0	12	79	42	11	0	0	0	.343	.436	1.063
2	Luis Gonzalez L. Gonzalez	.626	115	38	36	6	0	10	22	10	0	11	126	72	16	1	0	3	.313	.368	.994
3	Bobby Abreu B. Abreu	.617	60	21	24	5	1	2	9	2	0	11	63	37	8	0	1	0	.400	.413	1.029
4	Jeff Bagwell J. Bagwell	.585	82	28	25	0	1	7	17	5	3	15	91	48	8	0	1	1	.305	.363	.948
5	Howard Johnson H. Johnson	.581	74	28	21	5	1	5	13	11	0	18	85	43	11	0	0	4	.284	.376	.958
6	Benito Santiago B. Santiago	.578	83	29	24	4	1	6	17	6	1	13	91	48	11	0	1	2	.289	.341	.919
7	Jeff Kent J. Kent	.568	88	31	29	6	0	5	13	3	2	15	94	50	11	0	1	0	.330	.362	.930
8	Geoff Jenkins G. Jenkins	.557	61	23	26	5	0	1	7	5	1	7	67	34	6	0	0	2	.426	.478	1.035
9	Tony Gwynn T. Gwynn	.538	91	33	39	8	1	0	9	10	0	0	103	49	9	2	0	6	.429	.485	1.024
10	Scott Rolen S. Rolen	.514	70	26	22	8	0	2	11	7	2	11	82	36	10	0	3	0	.314	.378	.892
11	Ray Lankford R. Lankford	.505	103	31	29	7	2	4	18	3	2	31	108	52	13	0	0	0	.282	.315	.820
12	Gary Sheffield G. Sheffield	.500	54	18	14	7	0	2	5	4	1	12	59	27	9	0	0	1	.259	.322	.822
13	Mickey Morandini M. Morandini	.495	93	29	32	3	4	1	8	4	0	18	100	46	8	3	0	1	.344	.371	.866
14	Barry Bonds B. Bonds	.485	130	49	34	3	1	8	18	23	0	16	154	63	12	0	1	8	.262	.370	.855
15	Hal Morris H. Morris	.480	50	16	19	5	0	0	4	4	0	8	55	24	5	1	0	1	.380	.426	.906
16	Todd Helton T. Helton	.455	55	21	20	5	0	0	8	3	0	4	60	25	5	0	2	0	.364	.383	.838
17	Gregg Jefferies G. Jefferies	.455	88	29	30	2	1	2	8	7	0	4	95	40	5	0	0	2	.341	.389	.844
18	Henry Rodriguez H. Rodriguez	.442	52	16	14	3	0	2	6	0	0	11	52	23	5	0	0	0	.269	.269	.712
19	Sammy Sosa S. Sosa	.429	56	18	13	2	0	3	9	6	0	12	62	24	5	0	0	2	.232	.306	.735
20	Cliff Floyd C. Floyd	.425	73	25	18	7	0	2	10	3	0	17	76	31	9	0	0	0	.247	.276	.701
21	Edgardo Alfonzo E. Alfonzo	.423	52	20	17	5	0	0	3	1	0	2	53	22	5	0	0	0	.327	.340	.763
22	Mike Piazza M. Piazza	.423	71	25	17	1	0	4	8	1	0	11	72	30	5	0	0	0	.239	.250	.673
23	Bernard Gilkey B. Gilkey	.421	57	18	16	5	0	1	11	2	0	10	61	24	6	0	2	0	.281	.295	.716
24	Barry Larkin B. Larkin	.412	97	31	26	11	0	1	5	2	2	11	104	40	12	3	0	0	.268	.297	.709
25	Steve Finley S. Finley	.404	94	30	23	1	1	4	10	5	0	16	102	38	6	2	1	2	.245	.280	.684