Ted Williams has the highest career on-base percentage by a left fielder, with an on-base percentage of .485.

Interpreted as:

highest career on base percentage with a minimum of 3000 PA by a left fielder

	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	Ted Williams T. Williams	.485	9,114	2,143	7,141	1,667	2,469	481	60	490	1,694	1,914	37	645	22	4	4,540	1,031	2	20	86	187	.346	.636	1.121	2199	1,153.6	.496	190	1,013.8
2	Billy Hamilton B. Hamilton	.458	7,183	1,492	5,935	1,626	2,064	231	93	37	704	1,125	85	240	894		2,592	361	38				.348	.437	.895	1645	563.1	.436	143	493
3	Barry Bonds B. Bonds	.449	12,122	2,873	9,434	2,155	2,843	575	74	746	1,948	2,493	104	1,437	478	134	5,804	1,395	2	89	686	161	.301	.615	1.064	2602	1,138.3	.439	175	1,137.5
4	Willie Keeler W. Keeler	.428	4,376	921	3,957	997	1,517	132	96	19	501	247	65	42	324		1,898	247	107				.383	.480	.908	947	285.6	.429	137	251
5	Ed Delahanty E. Delahanty	.427	6,947	1,517	6,165	1,371	2,204	452	161	95	1,262	664	78	330	376		3,263	708	40				.358	.529	.956	1606	592.8	.445	152	550.3
6	Lefty O'Doul L. O'Doul	.417	3,581	894	3,192	618	1,126	173	41	113	532	329	23	114	35		1,720	327	37				.353	.539	.956	715	257.8	.430	145	219.5
7	Manny Ramirez M. Ramirez	.416	5,042	1,188	4,228	786	1,325	277	7	278	901	707	64	882	10	8	2,450	562	0	43	144	136	.313	.579	.995	987	373.6	.417	155	347.1
8	Jesse Burkett J. Burkett	.415	9,620	2,067	8,426	1,720	2,850	320	182	75	952	1,029	75	561	389		3,759	577	90				.338	.446	.861	1921	592.9	.411	137	526.7
9	Jake Stenzel J. Stenzel	.409	3,383	757	2,990	661	1,013	189	71	32	530	299	58	110	292		1,440	292	36				.339	.482	.891	713	187.2	.417	130	172.5
10	Joe Kelley J. Kelley	.409	6,646	1,510	5,687	1,195	1,824	289	160	59	1,020	773	72	346	395		2,610	508	114				.321	.459	.868	1335	402	.411	131	333.3
11	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
12	Bill Lange B. Lange	.407	3,095	696	2,733	599	924	126	73	31	491	298	21	103	353		1,289	230	43				.338	.472	.879	633	157.2	.413	126	125.6
13	Elmer Smith E. Smith	.406	4,876	1,087	4,206	849	1,339	177	126	35	611	584	39	194	223		1,873	338	47				.318	.445	.852	971	235.8	.405	128	214.5
14	Pete Browning P. Browning	.406	4,539	1,011	4,085	786	1,387	245	74	37	612	427	20	102	258		1,891	356	0				.340	.463	.869	1009	337.4	.409	144	309.8
15	Charlie Keller C. Keller	.404	3,441	871	2,841	529	793	126	48	155	568	584	10	379	31	0	1,480	329	6			35	.279	.521	.925	625	249.7	.429	155	223.2
16	Ralph Kiner R. Kiner	.403	5,677	1,328	4,703	908	1,327	199	36	346	934	937	23	640	19	2	2,636	581	7	7	1	111	.282	.560	.964	1090	426.8	.433	150	354.1
17	Stan Musial S. Musial	.402	3,605	947	3,111	524	979	182	39	135	566	457	11	255	19	10	1,644	356	6	20	37	47	.315	.528	.931	657	245.1	.413	145	201
18	Rickey Henderson R. Henderson	.402	11,551	2,690	9,448	1,941	2,619	434	53	228	932	1,922	91	1,496	1,198	299	3,843	715	30	60	57	142	.277	.407	.809	1762	406.8	.369	130	410
19	Tip O'Neill T. O'Neill	.395	4,633	1,029	4,172	871	1,370	219	92	52	698	417	31	58	161		1,929	363					.328	.462	.858	1004	323.8	.403	136	258.9
20	Ken Williams K. Williams	.394	5,187	1,256	4,495	807	1,436	261	70	187	859	524	26	255	146		2,398	518	142				.319	.533	.927	952	319.8	.421	134	239.6
21	Augie Galan A. Galan	.393	4,448	1,083	3,770	656	1,099	220	56	67	528	615	17	241	82		1,632	343	46			27	.292	.433	.826	693	163.9	.386	128	150.7
22	Mike Tiernan M. Tiernan	.392	6,732	1,478	5,915	1,316	1,838	257	162	106	853	748	41	218	428		2,737	525	28				.311	.463	.855	1365	343.1	.402	131	326.1
23	Bob Johnson B. Johnson	.392	7,395	1,711	6,357	1,125	1,875	369	86	258	1,170	988	22	778	87		3,190	713	28			102	.295	.502	.893	1297	427.1	.409	133	320.3
24	Goose Goslin G. Goslin	.390	9,165	2,141	8,057	1,377	2,559	464	162	237	1,542	901	53	548	171		4,058	863	154				.318	.504	.894	1602	441.5	.405	128	347.5
25	Gene Woodling G. Woodling	.389	5,463	1,462	4,595	714	1,310	220	51	121	684	781	23	383	23	36	1,995	392	35	29	28	84	.285	.434	.824	830	197.5	.375	127	176.6