Since 2005, 49 players are tied for the best walk percentage in a season, with a walk percentage of 100.0. The first three are Evan Phillips in 2022 and Jake Brentz and Austin Davis in 2021.

Interpreted as:

highest bb% by a player in an MLB season since 2005

	NAME	BB%	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	OBP	WRC	WRAA	WOBA	WRC+	BRAA
1	Evan Phillips E. Phillips	100.0	2022	LAD	1	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.689	360	0.3
2	Jake Brentz J. Brentz	100.0	2021	KCR	6	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.692	350	0.3
3	Austin Davis A. Davis	100.0	2021	TOT	11	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.692	348	0.3
4	Sean Reid-Foley S. Reid-Foley	100.0	2021	NYM	11	0	0	0	0	0	0	0	2	0	0	0	0	2	0	0	0	0	0	0	1.000	1	0.6	.692	345	0.6
5	Trevor Richards T. Richards	100.0	2021	TOT	17	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.692	340	0.3
6	Mario Feliciano M. Feliciano	100.0	2021	MIL	1	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.692	340	0.3
7	Justin Bruihl J. Bruihl	100.0	2021	LAD	21	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.692	343	0.3
8	Robert Gsellman R. Gsellman	100.0	2019	NYM	50	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.690	345	0.3
9	Chasen Shreve C. Shreve	100.0	2019	STL	3	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.690	343	0.3
10	Jacob Barnes J. Barnes	100.0	2017	MIL	68	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.693	338	0.3
11	Antonio Bastardo A. Bastardo	100.0	2017	PIT	8	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.693	341	0.3
12	Joe Blanton J. Blanton	100.0	2017	WSH	48	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.693	337	0.3
13	Chris Capuano C. Capuano	100.0	2016	MIL	16	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.691	344	0.3
14	Tony Cingrani T. Cingrani	100.0	2016	CIN	62	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.691	343	0.3
15	Spencer Kieboom S. Kieboom	100.0	2016	WSH	1	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.691	343	0.3
16	Edubray Ramos E. Ramos	100.0	2016	PHI	40	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.691	346	0.3
17	Phillippe Aumont P. Aumont	100.0	2015	PHI	1	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.687	353	0.3
18	Randy Choate R. Choate	100.0	2015	STL	66	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.687	356	0.3
19	Jason Garcia J. Garcia	100.0	2015	BAL	3	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.687	354	0.3
20	Liam Hendriks L. Hendriks	100.0	2015	TOR	5	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.687	354	0.3
21	Antonio Bastardo A. Bastardo	100.0	2014	PHI	62	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.689	356	0.3
22	J.J. Hoover	100.0	2014	CIN	50	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.689	354	0.3
23	Audry Perez A. Perez	100.0	2014	STL	1	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.689	357	0.3
24	Robert Carson R. Carson	100.0	2013	NYM	14	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.690	364	0.3
25	John Hester J. Hester	100.0	2013	LAA	1	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0	1.000	0	0.3	.690	361	0.3