Since 2000, Bryce Harper has the most walks in a game, with 6 walks against the Cubs on May 8, 2016.

Interpreted as:

most walks by a player in a single regular-season game since 2000

	NAME	BB	DATE	TM		OPP	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP
1	Bryce Harper B. Harper	6	5/8/2016	WSH	@	CHC	0	1	0	0	0	0	0	1	0	0	0	7	0	0	0	0	3	0
2	Freddie Freeman F. Freeman	5	6/17/2024	LAD	@	COL	1	2	1	0	0	0	0	0	0	0	0	6	1	0	0	0	1	0
3	Matt Chapman M. Chapman	5	8/12/2021	OAK	@	CLE	1	3	0	0	0	0	0	0	1	0	0	6	0	0	0	0	0	0
4	Max Muncy M. Muncy	5	4/25/2021	LAD	vs	SDP	1	2	0	0	0	0	0	0	1	0	0	6	0	0	0	0	1	0
5	Christian Yelich C. Yelich	5	9/26/2018	MIL	@	STL	0	2	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
6	Bryce Harper B. Harper	5	9/18/2018	WSH	@	MIA	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
7	Rougned Odor R. Odor	5	8/2/2018	TEX	vs	BAL	1	3	1	0	0	1	3	0	0	0	0	6	4	1	0	0	0	0
8	Joey Votto J. Votto	5	8/27/2017	CIN	vs	PIT	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
9	Matt Holliday M. Holliday	5	4/9/2017	NYY	@	BAL	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
10	Steven Souza Jr. S. Souza Jr.	5	6/15/2015	TBR	vs	WSH	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
11	Melky Cabrera M. Cabrera	5	8/10/2014	TOR	vs	DET	5	0	3	0	0	0	1	0	0	0	0	10	3	0	0	0	2	0
12	Matt Joyce M. Joyce	5	4/25/2014	TBR	@	CWS	0	1	0	0	0	0	1	0	0	0	1	5	0	0	0	0	0	0
13	Joey Votto J. Votto	5	9/23/2013	CIN	vs	NYM	0	0	0	0	0	0	1	0	0	0	0	5	0	0	0	0	1	0
14	Tony Campana T. Campana	5	8/24/2013	ARI	@	PHI	5	1	1	0	0	0	0	0	1	0	0	10	1	0	0	0	0	0
15	Cliff Pennington C. Pennington	5	8/24/2013	ARI	@	PHI	5	1	1	0	0	0	0	0	0	0	0	10	1	0	0	0	1	1
16	Mike Baxter M. Baxter	5	8/4/2012	NYM	@	SDP	0	1	0	0	0	0	0	0	0	0	0	5	0	0	0	0	0	0
17	Alex Gordon A. Gordon	5	6/17/2012	KCR	@	STL	3	1	0	0	0	0	0	0	0	0	0	8	0	0	0	0	0	0
18	Colby Rasmus C. Rasmus	5	5/22/2011	STL	@	KCR	1	1	0	0	0	0	1	0	0	0	0	6	0	0	0	0	0	0
19	Kevin Youkilis K. Youkilis	5	5/15/2010	BOS	@	DET	1	1	0	0	0	0	0	0	0	0	0	6	0	0	0	0	0	0
20	Mark Teixeira M. Teixeira	5	4/25/2009	NYY	@	BOS	1	3	0	0	0	0	0	0	1	0	0	6	0	0	0	0	1	0
21	Alex Gordon A. Gordon	5	7/30/2008	KCR	@	OAK	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0	0	2	0
22	Milton Bradley M. Bradley	5	4/16/2008	TEX	@	TOR	3	1	2	1	0	0	0	0	1	0	0	8	3	1	0	0	2	0
23	Todd Helton T. Helton	5	4/29/2007	COL	vs	ATL	1	1	1	0	0	0	0	0	0	0	0	6	1	0	0	0	0	0
24	Jim Thome J. Thome	5	4/19/2007	CWS	vs	TEX	0	1	0	0	0	0	0	0	0	0	0	5	0	0	0	0	1	0
25	Ryan Howard R. Howard	5	7/30/2006	PHI	vs	FLA	0	2	0	0	0	0	0	0	0	0	0	5	0	0	0	0	1	0