Ken Phelps has the best career slugging percentage in the ALCS, with a slugging percentage of 2.000.

Interpreted as:

highest slugging by a player in a alcs series

	NAME	SLG	SERIES	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	OPS
1	Ken Phelps K. Phelps	2.000	ALCS	1	1	0	1	1	0	0	0	0	0	0	0	0	1	2	1	0	0	0	0	1.000	1.000	3.000
2	Mark Brouhard M. Brouhard	1.750	ALCS	1	4	4	3	1	0	1	3	0	0	0	0	0	4	7	2	0	0	0	0	.750	.750	2.500
3	Jason Castro J. Castro	1.667	ALCS	3	3	2	2	0	0	1	2	2	0	0	0	0	5	5	1	0	0	0	0	.667	.800	2.467
4	Jose Vizcaino J. Vizcaino	1.500	ALCS	4	2	3	2	1	0	0	2	0	0	0	2	0	3	3	1	0	1	0	0	1.000	.667	2.167
5	Kevin Cash K. Cash	1.333	ALCS	3	3	1	1	0	0	1	1	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.667
6	Robb Quinlan R. Quinlan	1.333	ALCS	1	3	1	1	0	0	1	1	0	0	2	0	0	3	4	1	0	0	0	0	.333	.333	1.667
7	Darryl Strawberry D. Strawberry	1.056	ALCS	7	18	5	7	0	0	4	6	3	0	4	0	0	21	19	4	0	0	1	0	.389	.476	1.532
8	Dalton Pompey D. Pompey	1.000	ALCS	2	1	0	1	0	0	0	0	0	0	0	2	0	1	1	0	0	0	0	0	1.000	1.000	2.000
9	Paulo Orlando P. Orlando	1.000	ALCS	4	2	2	2	0	0	0	0	0	0	0	0	0	2	2	0	0	0	0	0	1.000	1.000	2.000
10	Jeff Mathis J. Mathis	1.000	ALCS	5	12	2	7	5	0	0	1	0	0	2	0	0	12	12	5	0	0	0	0	.583	.583	1.583
11	Craig Grebeck C. Grebeck	1.000	ALCS	1	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
12	Ron Jackson R. Jackson	1.000	ALCS	1	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
13	Mike Davis M. Davis	1.000	ALCS	1	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
14	Barry Foote B. Foote	1.000	ALCS	2	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
15	Willie Davis W. Davis	1.000	ALCS	2	2	1	1	1	0	0	0	0	0	0	0	0	2	2	1	0	0	0	0	.500	.500	1.500
16	Vic Davalillo V. Davalillo	1.000	ALCS	4	8	2	5	1	1	0	1	1	0	0	0	0	9	8	2	0	0	1	1	.625	.667	1.667
17	Dick Woodson D. Woodson	1.000	ALCS	2	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
18	Milton Bradley M. Bradley	.944	ALCS	4	18	4	9	2	0	2	5	0	0	2	0	0	18	17	4	0	0	0	1	.500	.500	1.444
19	Wally Joyner W. Joyner	.909	ALCS	3	11	3	5	2	0	1	2	2	0	0	0	0	13	10	3	0	0	0	1	.455	.538	1.448
20	Juan Soto J. Soto	.895	ALCS	5	19	5	7	1	0	3	6	4	0	3	0	0	23	17	4	0	0	1	0	.368	.478	1.373
21	Adolis García A. García	.893	ALCS	7	28	7	10	0	0	5	15	0	2	6	1	0	30	25	5	0	0	0	0	.357	.400	1.293
22	Gary Roenicke G. Roenicke	.889	ALCS	5	9	5	4	1	0	1	5	5	2	0	0	0	16	8	2	0	0	0	2	.444	.688	1.576
23	Mark Whiten M. Whiten	.857	ALCS	2	7	2	2	1	0	1	1	1	0	3	0	0	8	6	2	0	0	1	1	.286	.375	1.232
24	Enrique Hernández E. Hernández	.846	ALCS	6	26	4	10	1	1	3	3	0	1	4	0	0	27	22	5	0	0	0	0	.385	.407	1.254
25	Nelson Cruz N. Cruz	.845	ALCS	16	58	14	19	6	0	8	20	7	1	12	0	1	66	49	14	0	0	1	2	.328	.409	1.254