Ted Williams had the best on-base percentage by a player in his first 13 seasons, with an on-base percentage of .486.

Interpreted as:

highest obp with a minimum of 1.55 PA per team game by a player in first 13 seasons

	NAME	OBP	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Ted Williams T. Williams	.486	1,581	5,573	1,385	1,937	395	63	366	1,387	1,484	22	486	20	2	7,087	3,556	824	5	3		132	.348	.638	1.124	1731	910	.503	190	796.2
2	Babe Ruth B. Ruth	.479	1,350	4,419	1,125	1,539	312	90	356	1,097	1,084	29	743	85		5,589	3,099	758	57				.348	.701	1.181	1451	795.2	.524	203	744.4
3	John McGraw J. McGraw	.466	1,087	3,910	1,024	1,305	121	70	13	462	832	134	155	435		4,922	1,605	204	46				.334	.410	.876	1081	353.1	.433	141	308.3
4	Billy Hamilton B. Hamilton	.458	1,492	5,935	1,626	2,064	231	93	37	704	1,125	85	240	894		7,183	2,592	361	38				.348	.437	.895	1645	563.1	.436	143	493
5	Lou Gehrig L. Gehrig	.446	1,687	6,249	1,466	2,142	428	141	378	1,570	1,139	29	619	89		7,519	3,986	947	102				.343	.638	1.084	1768	822.2	.479	177	788.1
6	Bill Joyce B. Joyce	.435	906	3,310	822	971	153	106	70	609	721	108	303	266		4,163	1,546	329	24				.293	.467	.902	933	302.4	.430	139	267.6
7	Jimmie Foxx J. Foxx	.435	1,561	5,551	1,216	1,852	313	93	379	1,345	985	9	859	71		6,605	3,488	785	60				.334	.628	1.063	1512	674.4	.469	163	578
8	Ty Cobb T. Cobb	.434	1,694	6,383	1,241	2,361	376	183	63	1,077	658	63	493	707		7,259	3,292	622	155				.370	.516	.950	1422	674.8	.453	179	620.3
9	Frank Thomas F. Thomas	.432	1,698	6,065	1,168	1,902	393	11	376	1,285	1,286	53	962	32	21	7,505	3,445	780	0	101	155	175	.314	.568	1.000	1514	598.2	.427	161	576.9
10	Stan Musial S. Musial	.431	1,834	7,028	1,396	2,418	509	151	292	1,253	1,054	31	375	64	23	8,149	4,105	952	29	7		140	.344	.584	1.015	1703	781.8	.460	172	705.2
11	Jesse Burkett J. Burkett	.430	1,640	6,763	1,497	2,396	273	152	66	838	832	63	387	347		7,731	3,171	491	73				.354	.469	.899	1671	546.7	.428	141	478.8
12	Mickey Mantle M. Mantle	.429	1,740	6,068	1,380	1,875	264	67	419	1,187	1,291	11	1,246	135	30	7,414	3,530	750	13	31	82	66	.309	.582	1.011	1528	680.4	.441	175	671.3
13	Rogers Hornsby R. Hornsby	.429	1,689	6,366	1,213	2,288	393	152	217	1,176	734	40	512	126		7,301	3,636	762	161				.359	.571	1.000	1525	682.2	.457	175	665.3
14	Todd Helton T. Helton	.427	1,812	6,506	1,222	2,134	509	34	325	1,202	1,130	51	883	36	27	7,761	3,686	868	3	71	175	160	.328	.567	.994	1545	583	.420	139	395.6
15	Edgar Martinez E. Martinez	.426	1,387	4,876	880	1,558	372	14	198	780	877	60	746	40	27	5,867	2,552	584	10	44	71	128	.320	.523	.949	1124	417.3	.415	152	386.3
16	Wade Boggs W. Boggs	.424	1,865	7,139	1,211	2,392	467	49	98	801	1,139	23	548	18	29	8,401	3,251	614	26	74	157	183	.335	.455	.880	1423	466.2	.390	139	394
17	Ferris Fain F. Fain	.424	1,151	3,930	595	1,139	213	30	48	570	904	18	261	46	12	4,904	1,556	291	44	8	3	117	.290	.396	.820	777	203	.390	127	161
18	Max Bishop M. Bishop	.423	1,338	4,494	966	1,216	236	35	41	379	1,156	31	452	40		5,779	1,645	312	98				.271	.366	.789	904	176.3	.383	113	104.4
19	Joe Jackson J. Jackson	.423	1,332	4,981	873	1,772	307	168	54	785	519	59	234	202		5,690	2,577	529	131				.356	.517	.940	1090	480.3	.443	165	429.2
20	Joey Votto J. Votto	.421	1,717	6,088	1,009	1,866	404	20	284	944	1,180	60	1,311	79	29	7,372	3,162	708	0	44	140	146	.307	.519	.941	1358	499	.402	150	446.2
21	Dan Brouthers D. Brouthers	.420	1,233	4,973	1,151	1,711	345	147	87	622	581	74	20	170		5,628	2,611	579					.344	.525	.945	1401	576.8	.435	159	513.4
22	Mickey Cochrane M. Cochrane	.419	1,482	5,169	1,041	1,652	333	64	119	830	857	29	217	64		6,206	2,470	516	151				.320	.478	.897	1128	344.9	.413	132	269.2
23	Eddie Collins E. Collins	.419	1,576	5,576	1,049	1,816	219	125	21	700	839	54	342	528		6,761	2,348	365	292				.326	.421	.840	1115	412.3	.408	153	393.3
24	Joe Kelley J. Kelley	.419	1,438	5,543	1,235	1,840	303	162	61	1,024	764	63	330	406		6,451	2,650	526	81				.332	.478	.897	1369	430.7	.423	136	369.5
25	Tristram Speaker T. Speaker	.418	1,619	5,969	1,052	2,018	395	148	45	805	745	77	290	378		6,954	2,844	588	163				.338	.476	.895	1240	515.4	.428	161	469.1