who has the highest on-base percentage in a single season in last 50 years min 500 an

Between October 29, 1975 and October 29, 2025, 50 players are tied for the best on-base percentage in a season, with an on-base percentage of 1.000. The first three are Ryne Nelson this season, Charlie Culberson in 2023 and Evan Phillips in 2022.

	NAME	OBP	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS
1	Ryne Nelson R. Nelson	1.000	2025	AZ	1	1	1	1	0	0	0	1	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
2	Charlie Culberson C. Culberson	1.000	2023	ATL	1	1	0	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
3	Evan Phillips E. Phillips	1.000	2022	LAD	1	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
4	Josh Lowe J. Lowe	1.000	2021	TBR	2	1	0	1	0	0	0	0	1	0	0	1	0	2	1	0	0	0	0	0	1.000	1.000	2.000
5	Connor Overton C. Overton	1.000	2021	TOT	6	1	1	1	0	0	0	2	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
6	Justin Bruihl J. Bruihl	1.000	2021	LAD	21	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
7	Austin Davis A. Davis	1.000	2021	TOT	11	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
8	Tommy Hunter T. Hunter	1.000	2021	NYM	3	1	1	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
9	Mario Feliciano M. Feliciano	1.000	2021	MIL	1	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
10	Sean Reid-Foley S. Reid-Foley	1.000	2021	NYM	11	0	0	0	0	0	0	0	2	0	0	0	0	2	0	0	0	0	0	0
11	Trevor Richards T. Richards	1.000	2021	TOT	17	0	1	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
12	Jose Quintana J. Quintana	1.000	2021	TOT	7	1	0	1	0	0	0	0	1	0	0	0	0	2	1	0	0	0	0	0	1.000	1.000	2.000
13	Jake Brentz J. Brentz	1.000	2021	KCR	6	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
14	Daniel Bard D. Bard	1.000	2021	COL	64	1	1	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
15	Michael Lorenzen M. Lorenzen	1.000	2020	CIN	6	0	2	0	0	0	0	0	0	1	0	0	0	1	0	0	0	0	0	0
16	Chasen Shreve C. Shreve	1.000	2019	STL	3	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
17	Oliver Drake O. Drake	1.000	2019	TBR	3	1	0	1	0	0	0	1	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
18	Gregory Soto G. Soto	1.000	2019	DET	1	2	0	2	0	0	0	0	0	0	0	0	0	2	2	0	0	0	0	0	1.000	1.000	2.000
19	R.J. Alaniz	1.000	2019	TOT	8	1	0	1	0	0	0	1	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000
20	Francisco Liriano F. Liriano	1.000	2019	PIT	67	1	0	1	0	0	0	0	1	0	0	0	0	2	1	0	0	0	0	0	1.000	1.000	2.000
21	Robert Gsellman R. Gsellman	1.000	2019	NYM	50	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0
22	Wade LeBlanc W. LeBlanc	1.000	2019	SEA	2	0	0	0	0	0	0	0	1	0	0	0	0	2	0	0	1	0	0	0
23	John Means J. Means	1.000	2019	BAL	2	1	0	1	0	0	0	0	1	0	0	0	0	3	1	0	1	0	0	0	1.000	1.000	2.000
24	Will Smith W. Smith	1.000	2019	SFG	58	1	0	1	0	0	0	2	0	0	0	0	0	2	1	0	1	0	0	0	1.000	1.000	2.000
25	John Brebbia J. Brebbia	1.000	2019	STL	63	1	1	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000