Tom Wilson and Jim Mason are tied for the most career home runs per at-bat in the postseason, with 1.

Interpreted as:

most hr/ab by a player postseason

	NAME	HR/AB	HR	AB	G	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Tom Wilson T. Wilson	1	1	1	2	1	1	0	0	1	0	0	0	0	0	1	4	1	0	0	0	0	1.000	1.000	4.000	5.000
2	Jim Mason J. Mason	1	1	1	5	1	1	0	0	1	0	0	0	0	0	1	4	1	0	0	0	0	1.000	1.000	4.000	5.000
3	Chuck Essegian C. Essegian	0.67	2	3	4	2	2	0	0	2	1	0	1	0	0	4	8	2	0	0	0	0	.667	.750	2.667	3.417
4	Keon Broxton K. Broxton	0.5	1	2	2	1	1	0	0	1	0	0	1	0	0	2	4	1	0	0	0	0	.500	.500	2.000	2.500
5	Turner Ward T. Ward	0.5	1	2	3	2	1	0	0	3	1	0	0	0	0	3	4	1	0	0	0	0	.500	.667	2.000	2.667
6	Jose Santiago J. Santiago	0.5	1	2	3	1	1	0	0	1	0	0	1	0	0	2	4	1	0	0	0	0	.500	.500	2.000	2.500
7	Brandon Woodruff B. Woodruff	0.33	1	3	7	1	1	0	0	1	1	0	1	0	0	5	4	1	1	0	0	0	.333	.500	1.333	1.833
8	Kevin Cash K. Cash	0.33	1	3	4	1	1	0	0	1	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667
9	Bill Bathe B. Bathe	0.33	1	3	4	1	1	0	0	3	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667
10	Dusty Rhodes D. Rhodes	0.33	2	6	3	2	4	0	0	7	1	0	2	0	0	7	10	2	0	0	1	0	.667	.714	1.667	2.381
11	Eric Hinske E. Hinske	0.29	2	7	10	4	2	0	0	3	2	0	4	0	0	9	8	2	0	0	0	0	.286	.444	1.143	1.587
12	Garrett Mitchell G. Mitchell	0.25	1	4	2	1	1	0	0	2	1	0	1	0	1	5	4	1	0	0	0	0	.250	.400	1.000	1.400
13	Eric Thames E. Thames	0.25	1	4	1	1	2	1	0	1	0	0	1	0	0	4	6	2	0	0	0	1	.500	.500	1.500	2.000
14	Mark Trumbo M. Trumbo	0.25	1	4	1	1	1	0	0	2	0	0	1	0	0	4	4	1	0	0	0	0	.250	.250	1.000	1.250
15	Chuck Carr C. Carr	0.25	1	4	2	1	1	0	0	1	1	0	3	0	0	5	4	1	0	0	0	0	.250	.400	1.000	1.400
16	Mark Brouhard M. Brouhard	0.25	1	4	1	4	3	1	0	3	0	0	0	0	0	4	7	2	0	0	0	0	.750	.750	1.750	2.500
17	Rosy Ryan R. Ryan	0.25	1	4	5	1	1	0	0	2	0	0	1	0	0	5	4	1	1		0	0	.250	.250	1.000	1.250
18	Rod Barajas R. Barajas	0.22	2	9	5	2	3	0	0	2	0	0	1	0	0	9	9	2	0	0	0	0	.333	.333	1.000	1.333
19	Donn Clendenon D. Clendenon	0.21	3	14	4	4	5	1	0	4	2	0	6	0	0	16	15	4	0	0	0	0	.357	.438	1.071	1.509
20	Jake Bauers J. Bauers	0.2	2	10	4	2	4	0	0	3	1	0	4	0	0	11	10	2	0	0	0	0	.400	.455	1.000	1.455
21	Juan Yepez J. Yepez	0.2	1	5	2	1	2	0	0	2	0	0	0	0	0	5	5	1	0	0	0	0	.400	.400	1.000	1.400
22	Travis Wood T. Wood	0.2	1	5	14	1	1	0	0	1	0	0	2	0	0	5	4	1	0	0	0	0	.200	.200	.800	1.000
23	Eduardo Perez E. Perez	0.2	1	5	4	1	1	0	0	1	1	0	0	0	0	6	4	1	0	0	0	0	.200	.333	.800	1.133
24	Harry Spilman H. Spilman	0.2	1	5	6	1	1	0	0	1	0	0	0	0	0	5	4	1	0	0	0	0	.200	.200	.800	1.000
25	Royce Lewis R. Lewis	0.18	4	22	6	6	5	0	0	5	4	0	8	0	0	26	17	4	0	0	0	2	.227	.346	.773	1.119