what player has the most home run per at bat

Mark Worrell, Esteban Yan and Frank O'Connor are tied for the most career home runs per at-bat, with 0.5.

	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	WRC	WRAA	WOBA	WRC+	BRAA
1	Mark Worrell M. Worrell	0.5	1	2	4	1	1	0	0	3	0	0	0	0	0	2	4	1	0	0	0	0	.500	.500	2.000	2.500	1	1.1	1.012	548	1.1
2	Esteban Yan E. Yan	0.5	1	2	38	1	2	0	0	1	0	0	0	0	0	3	5	1	1	0	0	0	1.000	1.000	2.500	3.500	4	3.3	1.419	906	3.3
3	Frank O'Connor F. O'Connor	0.5	1	2	3	1	2	0	0	3	0	0	0	0		2	5	1					1.000	1.000	2.500	3.500	2	1.9	1.453	671	1.9
4	Daniel Camarena D. Camarena	0.33	1	3	6	1	1	0	0	4	0	0	2	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.669	331	0.9
5	Keith McDonald K. McDonald	0.33	3	9	8	3	3	0	0	5	2	0	2	0	0	11	12	3	0	0	0	1	.333	.455	1.333	1.788	5	3.1	.662	304	3.1
6	Jeff Bittiger J. Bittiger	0.33	1	3	3	1	1	0	0	1	0	0	1	0	0	4	4	1	1	0	0	0	.333	.333	1.333	1.667	2	1.2	.698	353	1.2
7	Luke Stuart L. Stuart	0.33	1	3	3	2	1	0	0	2	0	0	1	0	0	3	4	1	0				.333	.333	1.333	1.667	1	0.8	.692	290	0.8
8	Gregg Olson G. Olson	0.25	1	4	138	1	1	0	0	2	1	0	3	0	0	5	4	1	0	0	0	0	.250	.400	1.000	1.400	2	0.9	.546	235	0.9
9	Doug Clarey D. Clarey	0.25	1	4	9	2	1	0	0	2	0	0	1	0	0	4	4	1	0	0	0	0	.250	.250	1.000	1.250	1	0.7	.562	255	0.7
10	Tom Sullivan T. Sullivan	0.25	1	4	3	1	1	0	0	2	0	0	1	0	0	4	4	1	0				.250	.250	1.000	1.250	1	0.6	.519	184	0.5
11	Charlton Jimerson C. Jimerson	0.22	2	9	31	8	4	0	0	2	0	0	3	4	0	9	10	2	0	0	0	1	.444	.444	1.111	1.556	3	2.3	.639	303	2.3
12	Eddy Rodriguez E. Rodriguez	0.2	1	5	2	1	1	0	0	1	2	0	3	0	0	7	4	1	0	0	0	0	.200	.429	.800	1.229	2	1	.491	222	1
13	Gene Stechschulte G. Stechschulte	0.2	1	5	93	1	2	0	0	3	1	0	3	0	0	6	5	1	0	0	0	0	.400	.500	1.000	1.500	2	1.4	.596	270	1.4
14	Ed Sanicki E. Sanicki	0.18	3	17	20	5	5	1	0	8	2	0	5	1	0	20	15	4	1			0	.294	.368	.882	1.251	5	3	.532	217	2.9
15	Humberto Castellanos H. Castellanos	0.17	1	6	11	1	3	0	0	5	0	0	1	0	0	7	6	1	0	1	0	0	.500	.429	1.000	1.429	2	1.3	.538	240	1.2
16	David Matranga D. Matranga	0.17	1	6	7	1	1	0	0	1	0	0	2	0	0	6	4	1	0	0	0	0	.167	.167	.667	.833	1	0	.333	97	0
17	Hal Haydel H. Haydel	0.17	1	6	35	2	3	1	0	1	0	0	2	0	0	6	7	2	0	0	0	0	.500	.500	1.167	1.667	3	1.9	.722	359	1.8
18	Ray Rippelmeyer R. Rippelmeyer	0.17	1	6	18	2	3	1	0	1	0	0	1	0	0	6	7	2	0	0	0	0	.500	.500	1.167	1.667	3	1.9	.714	342	1.8
19	Greg Jones G. Jones	0.14	1	7	9	1	1	0	0	1	1	0	6	1	0	8	4	1	0	0	0	0	.143	.250	.571	.821	1	0.2	.342	108	0.1
20	Carlos Rivero C. Rivero	0.14	1	7	4	1	4	2	0	3	1	0	0	0	0	8	9	3	0	0	0	0	.571	.625	1.286	1.911	4	2.9	.785	424	2.9
21	Chad Santos C. Santos	0.14	1	7	3	2	3	0	0	2	1	0	2	0	0	8	6	1	0	0	0	0	.429	.500	.857	1.357	3	1.5	.557	242	1.5
22	Juan Diaz J. Diaz	0.14	1	7	4	2	2	1	0	2	1	0	2	0	0	8	6	2	0	0	0	0	.286	.375	.857	1.232	2	1.1	.498	211	1.1
23	Don Durham D. Durham	0.14	2	14	15	3	7	0	0	4	0	0	4	0	0	14	13	2	0	0	0	0	.500	.500	.929	1.429	5	3.5	.651	314	3.3
24	Bill Southworth B. Southworth	0.14	1	7	3	2	2	0	0	2	0	2	3	0	0	9	5	1	0	0	0	0	.286	.444	.714	1.159	2	1.3	.500	226	1.3
25	Dummy Lynch D. Lynch	0.14	1	7	7	3	2	0	0	1	1	0	1	0		8	5	1	0			0	.286	.375	.714	1.089	2	0.8	.477	184	0.8