4 players are tied for the highest career on-base percentage when slugging under .400, with an on-base percentage of .667. The first three are Hayden Penn, Darrell Rasner and Jake Striker.

Interpreted as:

highest obp by a player with less than.400 slg

	NAME	OBP	SLG	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Hayden Penn H. Penn	.667	.000	18	1	0	0	0	0	0	0	2	0	0	0	0	5	0	0	2	0	0	0	.000	.667	1	0.7	.470	210	0.7
2	Darrell Rasner D. Rasner	.667	.000	2	1	0	0	0	0	0	0	2	0	1	0	0	3	0	0	0	0	0	0	.000	.667	1	0.4	.472	194	0.3
3	Jake Striker J. Striker	.667	.000	1	1	0	0	0	0	0	0	1	1	1	0	0	3	0	0	0	0	0	0	.000	.667	1	0.4	.481	204	0.4
4	Chief Chouneau C. Chouneau	.667	.000	1	1	0	0	0	0	0	0	1	1	1	0		3	0	0	0				.000	.667	1	0.4	.505	229	0.4
5	Charles Matthews C. Matthews	.600	.333	1	3	1	1	0	0	0	0	0	2	1	0		5	1	0					.333	.933	1	0.7	.518	188	0.7
6	Talmadge Nunnari T. Nunnari	.583	.200	18	5	2	1	0	0	0	1	6	0	2	0	0	12	1	0	0	1	1	0	.200	.783	2	0.7	.410	141	0.7
7	Rudy Miller R. Miller	.571	.250	2	4	1	1	0	0	0	1	3	0	0	0	0	7	1	0	0				.250	.821	2	0.6	.453	160	0.6
8	George Orme G. Orme	.556	.333	4	6	4	2	0	0	0	1	3	0	0	0	0	9	2	0	0				.333	.889	2	0.8	.456	161	0.7
9	Red Howell R. Howell	.545	.286	11	7	0	2	0	0	0	2	4	0	2	0	0	11	2	0	0			0	.286	.831	2	0.9	.438	151	0.7
10	Bill Lelivelt B. Lelivelt	.545	.375	5	8	0	3	0	0	0	0	3	0	2	0		11	3	0	0				.375	.920	2	1.1	.464	193	1
11	Petey Halpin P. Halpin	.500	.333	6	6	5	2	0	0	0	0	2	0	2	0	0	8	2	0	0	0	0	0	.333	.833	1	0.5	.393	157	0.5
12	Kenedy Corona K. Corona	.500	.000	3	2	0	0	0	0	0	0	2	0	1	0	0	4	0	0	0	0	0	0	.000	.500	1	0.1	.346	124	0.1
13	Ivan Castillo I. Castillo	.500	.333	3	3	0	1	0	0	0	1	1	0	0	0	0	4	1	0	0	0	0	0	.333	.833	1	0.3	.393	152	0.3
14	Mario Feliciano M. Feliciano	.500	.250	3	4	1	1	0	0	0	0	2	0	1	0	0	6	1	0	0	0	0	0	.250	.750	1	0.3	.377	141	0.3
15	Reid Detmers R. Detmers	.500	.000	1	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0.1	.346	118	0
16	Clarke Schmidt C. Schmidt	.500	.000	2	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0.1	.346	122	0.1
17	Edubray Ramos E. Ramos	.500	.000	162	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.345	115	0
18	Audry Perez A. Perez	.500	.000	3	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.345	119	0
19	Phillippe Aumont P. Aumont	.500	.000	6	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0.1	.343	119	0.1
20	Brandon Gomes B. Gomes	.500	.000	6	1	0	0	0	0	0	1	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.345	123	0.1
21	Cole Kimball C. Kimball	.500	.000	11	1	1	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.347	119	0
22	Josh Stinson J. Stinson	.500	.000	20	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.347	120	0
23	Dan Runzler D. Runzler	.500	.000	79	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.347	124	0
24	Brian Gordon B. Gordon	.500	.000	1	1	0	0	0	0	0	0	1	0	1	0	0	2	0	0	0	0	0	0	.000	.500	0	0	.347	115	0
25	Jeremy Sowers J. Sowers	.500	.250	4	4	1	1	0	0	0	0	2	0	1	0	0	7	1	0	1	0	0	0	.250	.750	1	0.3	.386	134	0.3