Ray Grimes has the best career on-base percentage for the Cubs, with an on-base percentage of .418.

Interpreted as:

cubs obp with a minimum of 1500 PA leaders all-time

	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	Ray Grimes R. Grimes	.418	1,674	400	1,432	255	474	96	25	27	248	197	16	120	21		701	148	29				.331	.490	.907	303	94.9	.418	139	84.8
2	Hack Wilson H. Wilson	.412	3,719	850	3,154	652	1,017	185	44	190	769	463	17	461	34		1,860	419	85				.322	.590	1.002	774	299.9	.444	153	270.7
3	Riggs Stephenson R. Stephenson	.408	3,964	978	3,474	533	1,167	237	40	49	589	395	25	176	39		1,631	326	70				.336	.469	.877	690	192.8	.403	133	172.1
4	Bill Lange B. Lange	.400	3,620	813	3,202	691	1,056	134	80	39	579	350	25	123	400		1,467	253	43				.330	.458	.858	718	157.6	.405	121	120.6
5	Bill Madlock B. Madlock	.397	1,662	400	1,481	210	498	86	13	31	202	140	19	100	35	25	703	130	7	15	28	47	.336	.475	.872	271	91.9	.393	137	69.1
6	Cap Anson C. Anson	.396	10,123	2,277	9,104	1,722	3,012	529	124	97	1,306	953	32	146	247		4,080	750	34				.331	.448	.844	2154	654.1	.397	134	525.3
7	Stan Hack S. Hack	.394	8,506	1,938	7,278	1,239	2,193	363	81	57	642	1,092	21	466	165		2,889	501	115			39	.301	.397	.791	1253	252.9	.375	124	240
8	Frank Chance F. Chance	.394	5,070	1,275	4,275	795	1,269	200	79	20	590	548	137	319	402		1,687	299	110				.297	.395	.789	800	249.4	.385	137	215.4
9	Kiki Cuyler K. Cuyler	.391	4,195	949	3,687	665	1,199	220	66	79	602	352	44	370	161		1,788	365	112				.325	.485	.876	722	186.1	.398	128	159
10	Mark Grace M. Grace	.386	8,234	1,910	7,156	1,057	2,201	456	43	148	1,004	946	29	561	67	48	3,187	647	15	88	100	174	.308	.445	.832	1255	268.2	.367	123	228.6
11	Bill Dahlen B. Dahlen	.384	4,521	987	3,909	897	1,170	203	106	57	561	472	68	332	286		1,756	366	72				.299	.449	.834	870	181.2	.394	119	134.9
12	Derrek Lee D. Lee	.378	4,021	924	3,514	578	1,046	239	10	179	574	448	27	721	51	22	1,842	428	2	30	46	107	.298	.524	.903	680	193.8	.386	131	157
13	Kris Bryant K. Bryant	.378	3,626	833	3,100	564	865	191	19	160	465	420	86	862	38	20	1,574	370	0	20	18	40	.279	.508	.886	614	180.2	.377	136	160.8
14	Jimmy Ryan J. Ryan	.377	7,560	1,662	6,765	1,410	2,084	362	142	99	914	684	64	261	370		3,027	603	47				.308	.447	.824	1438	312.6	.389	120	226
15	Jimmy Sheckard J. Sheckard	.374	4,385	1,001	3,530	589	907	172	46	17	291	629	28	434	163		1,222	235	198				.257	.346	.720	585	126.7	.359	118	89.8
16	Anthony Rizzo A. Rizzo	.372	5,639	1,308	4,812	721	1,311	276	20	242	784	624	165	871	62	35	2,353	538	0	38	67	112	.272	.489	.861	900	242.1	.368	131	214.7
17	Tommy Leach T. Leach	.372	1,545	366	1,298	229	347	57	22	15	113	211	5	114	51		493	94	31				.267	.380	.752	213	44.3	.367	118	32.6
18	Phil Cavarretta P. Cavarretta	.371	7,509	1,953	6,592	968	1,927	341	99	92	896	794	35	585	61	0	2,742	532	88			71	.292	.416	.787	1054	190	.370	119	166.4
19	Bill Everitt B. Everitt	.371	2,987	665	2,727	521	880	82	41	11	333	197	12	194	179		1,077	134	51				.323	.395	.766	486	47.8	.367	105	21.3
20	Dom Dallessandro D. Dallessandro	.370	2,094	678	1,798	224	486	103	22	22	292	283	3	134	14		699	147	10			48	.270	.389	.759	282	48.8	.361	118	44.3
21	Gabby Hartnett G. Hartnett	.370	7,132	1,926	6,282	847	1,867	391	64	231	1,153	691	34	683	28		3,079	686	125			14	.297	.490	.860	1163	267	.390	127	247.4
22	Charlie Hollocher C. Hollocher	.370	3,390	760	2,936	411	894	145	35	14	241	277	26	94	99		1,151	194	151				.304	.392	.762	452	60.2	.362	112	45.8
23	Kosuke Fukudome K. Fukudome	.369	1,967	513	1,651	236	432	98	12	37	169	284	5	340	27	24	665	147	13	14	14	29	.262	.403	.772	262	30.5	.344	106	12.8
24	Bill Nicholson B. Nicholson	.368	5,614	1,349	4,857	738	1,323	245	53	205	833	696	43	684	26		2,289	503	18			55	.272	.471	.840	875	250.2	.391	135	228.7
25	Woody English W. English	.368	4,942	1,098	4,296	747	1,248	218	50	31	373	498	28	470	51		1,659	299	120				.291	.386	.754	665	35.8	.353	101	8.8