Bill Bergen has the lowest career on-base percentage, with an on-base percentage of .194.

Interpreted as:

least obp with a minimum of 3000 PA by a player ever

	NAME	OBP	PA	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Bill Bergen B. Bergen	.194	3,228	947	3,028	138	516	45	21	2	193	88	0	421	23		609	68	112				.170	.201	.395	80	-266.4	.192	22	-287.6
2	Cy Young C. Young	.234	3,101	918	2,960	325	623	87	35	18	290	81	10	373	29		834	140	50				.210	.282	.516	198	-212.2	.245	45	-238.4
3	Jeff Mathis J. Mathis	.252	3,015	948	2,718	255	526	112	8	53	286	205	16	872	12	8	813	173	51	25	17	39	.194	.299	.551	165	-189.1	.243	45	-200.1
4	Billy Sullivan B. Sullivan	.254	3,981	1,147	3,647	363	777	119	33	21	378	170	32	565	98		1,025	173	132				.213	.281	.535	287	-147.4	.260	66	-152.4
5	Hal Lanier H. Lanier	.255	3,940	1,196	3,703	297	843	111	20	8	273	136	4	436	11	11	1,018	139	78	19	25	135	.228	.275	.529	213	-196.7	.238	49	-226.7
6	Pop Snyder P. Snyder	.256	3,207	797	3,122	355	737	110	39	7	114	75	6	3	30		946	156					.236	.303	.559	382	-80.9	.258	79	-100.2
7	Bill Kuehne B. Kuehne	.258	4,423	1,085	4,277	533	993	145	115	25	403	136	5	80	150		1,443	285					.232	.337	.595	528	-118.5	.276	83	-112.8
8	Joe Gerhardt J. Gerhardt	.261	3,945	986	3,770	448	854	112	51	7	151	162	8	0	37		1,089	170					.227	.289	.550	459	-118.7	.259	78	-131.7
9	Bobby Wine B. Wine	.264	3,467	1,164	3,172	249	682	104	16	30	268	214	3	538	7	7	908	150	63	15	53	103	.215	.286	.550	204	-165.4	.245	51	-193.8
10	Hobe Ferris H. Ferris	.265	5,107	1,279	4,797	472	1,145	192	89	40	550	160	13	550	89		1,635	321	137				.239	.341	.606	475	-68.1	.290	83	-97.8
11	Doug Flynn D. Flynn	.266	4,085	1,309	3,853	288	918	115	39	7	284	151	1	320	20	20	1,132	161	60	20	58	95	.238	.294	.560	232	-223.9	.248	52	-225.5
12	Frank Hankinson F. Hankinson	.267	3,443	849	3,272	410	747	122	39	13	198	170	0		31		986	174					.228	.301	.568	425	-72.6	.266	82	-89.3
13	Lee Tannehill L. Tannehill	.269	4,184	1,090	3,778	331	833	135	27	3	346	229	23	375	63		1,031	165	154				.220	.273	.542	311	-126.9	.266	74	-117.7
14	Jack Burdock J. Burdock	.270	4,011	960	3,873	578	944	131	40	15	74	128	10	1	32		1,200	186					.244	.310	.580	519	-51.1	.268	88	-66
15	Charley O'Leary C. O'Leary	.270	3,581	955	3,232	317	731	104	18	3	213	164	32	247	74		880	125	153				.226	.272	.543	263	-105.1	.267	67	-125.9
16	Mike Zunino M. Zunino	.271	3,098	892	2,798	326	557	121	5	149	372	219	60	1,088	2	4	1,135	275	8	13	1	54	.199	.406	.676	305	-57.3	.293	87	-47.8
17	John Bateman J. Bateman	.271	3,585	1,017	3,330	250	765	123	18	81	375	172	27	610	10	10	1,167	222	25	31	69	123	.230	.350	.621	283	-89.6	.272	71	-116.5
18	Red Dooin R. Dooin	.272	4,271	1,290	4,004	333	961	139	31	10	344	155	20	328	133		1,192	180	92				.240	.298	.570	342	-103.8	.277	71	-137.9
19	Bill Killefer B. Killefer	.273	3,400	1,035	3,150	237	751	86	21	4	240	113	35	159	39		891	111	102				.238	.283	.555	233	-123.6	.270	61	-144.6
20	Joe Demaestri J. Demaestri	.274	3,678	1,121	3,441	322	813	114	23	49	281	168	17	511	15	19	1,120	186	30	22	13	91	.236	.325	.599	262	-159.4	.271	56	-194.7
21	Aurelio Rodriguez A. Rodriguez	.275	7,078	2,017	6,611	612	1,570	287	46	124	648	324	27	943	35	31	2,321	457	82	34	37	167	.237	.351	.626	586	-176.5	.282	73	-213.3
22	Miguel Olivo M. Olivo	.275	3,993	1,124	3,765	435	905	177	26	145	490	158	29	1,060	53	34	1,569	348	17	24	19	77	.240	.417	.691	383	-93.7	.297	78	-109.1
23	Otto Miller O. Miller	.275	3,049	927	2,836	229	695	97	33	5	231	104	13	301	40		873	135	96				.245	.308	.583	227	-106.4	.279	65	-122.3
24	Malachi Kittridge M. Kittridge	.277	4,454	1,216	4,029	375	882	108	31	17	391	314	8	221	64		1,103	156	103				.219	.274	.550	387	-223.7	.270	59	-255.4
25	Johnnie LeMaster J. LeMaster	.277	3,515	1,039	3,191	320	709	109	19	22	229	241	7	564	94	51	922	150	57	19	37	52	.222	.289	.566	223	-169.3	.257	58	-166.6