Joe Harris has the most walks per at-bat - hits per at-bat in a season, with 3 in his rookie season in 1914.

Interpreted as:

most bb / ab-h / ab in a season 300 pa by a player

	NAME	BB/AB-H/AB	PA	BB	AB	H	SEASON	TM	G	R	2B	3B	HR	RBI	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Joe Harris J. Harris	3	6	3	1	0	1914	NYY	2	0	0	0	0	0	1	1	0	0	0	0	1				.000	.800	.000	.800	2	1.1	.595	272	1.1
2	Shelby Miller S. Miller	2	3	2	1	0	2019	TEX	2	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.460	184	0.3
3	Trevor Williams T. Williams	2	3	2	1	0	2016	PIT	7	1	0	0	0	1	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.460	193	0.3
4	Javier Vazquez J. Vazquez	2	5	2	1	0	2010	NYY	4	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	.000	.667	.000	.667	1	0.6	.467	194	0.6
5	Jaime Garcia J. Garcia	2	3	2	1	0	2008	STL	10	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.472	193	0.4
6	Darrell Rasner D. Rasner	2	3	2	1	0	2008	NYY	2	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.472	194	0.3
7	Jason Grimsley J. Grimsley	2	3	2	1	0	2000	NYY	5	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.481	189	0.4
8	Cory Bailey C. Bailey	2	4	2	1	0	1996	STL	51	2	0	0	0	0	0	0	0	0	0	0	1	0	0	0	.000	.667	.000	.667	1	0.5	.479	200	0.5
9	Rick Honeycutt R. Honeycutt	2	3	2	1	0	1996	STL	61	0	0	0	0	1	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.479	200	0.4
10	Terry Leach T. Leach	2	3	2	1	0	1981	NYM	21	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.3	.471	203	0.3
11	Larry Lintz L. Lintz	2	4	2	1	0	1976	OAK	68	21	0	0	0	0	0	0	31	11	0	0	1	0	0	0	.000	.667	.000	.667	1	0.5	.475	213	0.5
12	Mickey Scott M. Scott	2	3	2	1	0	1972	BAL	15	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.3	.463	212	0.3
13	Jim Breazeale J. Breazeale	2	3	2	1	0	1969	ATL	2	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.3	.470	193	0.3
14	Danny Murphy D. Murphy	2	3	2	1	0	1969	CWS	17	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.3	.470	192	0.3
15	Archie Reynolds A. Reynolds	2	3	2	1	0	1969	CHC	2	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.3	.470	187	0.3
16	Leo Kiely L. Kiely	2	3	2	1	0	1960	KCA	20	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	.000	.667	.000	.667	1	0.4	.470	184	0.3
17	Dick Littlefield D. Littlefield	2	3	2	1	0	1951	CWS	4	0	0	0	0	0	0	0	0	0	0	0	0			0	.000	.667	.000	.667	1	0.4	.488	191	0.3
18	Charlie Bicknell C. Bicknell	2	3	2	1	0	1949	PHN	13	0	0	0	0	0	0	1	0		0	0	0			0	.000	.667	.000	.667	1	0.4	.495	194	0.4
19	Jim McDonnell J. McDonnell	2	3	2	1	0	1943	CLE	2	1	0	0	0	0	0	1	0	0	0	0	0			0	.000	.667	.000	.667	1	0.3	.487	206	0.3
20	Vern Olsen V. Olsen	2	3	2	1	0	1939	CHC	4	1	0	0	0	0	0	1	0		0	0	0			0	.000	.667	.000	.667	1	0.4	.494	195	0.4
21	Dick Lanahan D. Lanahan	2	3	2	1	0	1937	WSH	6	0	0	0	0	0	0	0	0	0	0	0	0				.000	.667	.000	.667	1	0.4	.494	176	0.3
22	Frank Reiber F. Reiber	2	3	2	1	0	1934	DET	3	0	0	0	0	0	0	0	0	0	0	0	0				.000	.667	.000	.667	1	0.4	.494	180	0.3
23	Jim Winford J. Winford	2	3	2	1	0	1934	SLN	5	0	0	0	0	0	0	1	0		0	0	0			0	.000	.667	.000	.667	1	0.4	.494	192	0.4
24	Pat Veltman P. Veltman	2	3	2	1	0	1929	NYG	2	1	0	0	0	0	0	0	0		0	0	0				.000	.667	.000	.667	1	0.4	.498	176	0.3
25	Ellis Johnson E. Johnson	2	3	2	1	0	1917	PHA	4	1	0	0	0	0	0	0	0		0	0	0				.000	.667	.000	.667	1	0.3	.484	200	0.3