John McGraw has the highest career on-base percentage by a third baseman, with an on-base percentage of .484.

Interpreted as:

highest obp with a minimum of 3000 PA by a 3rd baseman career

	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	John McGraw J. McGraw	.484	3,635	785	2,850	814	997	93	51	6	349	644	99	89	365		1,210	150	42				.350	.425	.909	836	294.5	.448	148	262
2	Bill Joyce B. Joyce	.443	3,544	761	2,802	731	840	133	97	60	518	633	90	243	232		1,347	290	19				.300	.481	.924	829	278.8	.439	142	246.5
3	Wade Boggs W. Boggs	.415	10,359	2,335	8,842	1,462	2,892	564	60	113	970	1,377	23	724	23	35	3,915	737	25	92	176	227	.327	.443	.858	1685	476.3	.381	132	397.9
4	Denny Lyons D. Lyons	.409	4,869	1,086	4,169	911	1,307	238	65	60	739	601	72	169	219		1,855	363	23				.314	.445	.854	1039	295.1	.408	135	267.9
5	Chipper Jones C. Jones	.398	9,292	2,180	7,878	1,424	2,376	480	35	415	1,417	1,310	15	1,236	140	42	4,171	930	3	86	141	225	.302	.529	.928	1660	515	.396	141	486.2
6	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
7	Eddie Yost E. Yost	.394	9,175	2,109	7,346	1,215	1,863	337	56	139	682	1,614	99	920	72	48	2,729	532	98	18	15	133	.254	.371	.765	1289	226.8	.362	114	163.5
8	Harlond Clift H. Clift	.390	6,894	1,582	5,730	1,070	1,558	309	62	178	829	1,070	41	713	69		2,525	549	53			51	.272	.441	.831	1101	275.5	.387	114	137.3
9	Dick Allen D. Allen	.389	3,203	741	2,787	501	858	149	48	135	453	377	7	654	56	18	1,508	332	14	18	63	62	.308	.541	.931	572	237.1	.405	160	216.3
10	Alex Rodriguez A. Rodriguez	.386	5,657	1,293	4,829	910	1,404	234	8	309	979	681	97	1,080	145	30	2,581	551	0	50	55	130	.291	.534	.920	995	318	.393	142	295.1
11	Bob Elliott B. Elliott	.384	5,968	1,419	5,176	801	1,523	283	65	144	933	749	9	456	34	2	2,368	492	34			138	.294	.457	.842	941	263.8	.392	131	226.1
12	Al Rosen A. Rosen	.384	4,374	1,044	3,725	603	1,063	165	20	192	717	587	27	385	39	25	1,844	377	9	26	9	121	.285	.495	.879	727	216.5	.397	137	201.9
13	Mike Schmidt M. Schmidt	.381	9,417	2,246	7,803	1,417	2,082	377	54	515	1,502	1,420	76	1,766	173	89	4,112	946	16	102	193	146	.267	.527	.908	1606	553	.396	147	504.1
14	Eddie Mathews E. Mathews	.378	9,590	2,254	8,101	1,456	2,212	338	70	496	1,396	1,381	23	1,399	66	35	4,178	904	33	52	95	117	.273	.516	.894	1625	548.9	.393	145	526.1
15	Toby Harrah T. Harrah	.377	4,579	1,098	3,819	630	1,025	162	26	110	496	637	49	432	143	38	1,569	298	38	36	33	84	.268	.411	.788	648	133.3	.357	121	111.7
16	George Brett G. Brett	.377	7,479	1,741	6,675	1,072	2,095	428	112	209	1,051	695	17	489	141	74	3,374	749	25	67	147	119	.314	.505	.882	1217	382.5	.385	140	344.8
17	Kris Bryant K. Bryant	.376	3,838	884	3,287	592	914	204	19	167	487	443	87	908	44	20	1,657	390	0	21	21	43	.278	.504	.880	643	183.9	.375	134	164.3
18	David Wright D. Wright	.376	6,870	1,585	5,998	949	1,777	390	26	242	970	762	45	1,292	196	65	2,945	658	0	65	73	152	.296	.491	.867	1092	285.4	.373	133	280.8
19	Bill Mueller B. Mueller	.373	4,886	1,216	4,223	663	1,229	265	22	85	493	543	35	571	20	18	1,793	372	37	48	17	105	.291	.425	.797	693	83.8	.352	112	74.9
20	Heinie Groh H. Groh	.373	5,970	1,389	5,172	800	1,518	269	77	21	483	586	66	273	126		2,004	367	146				.294	.387	.760	800	143.4	.365	123	141.5
21	Justin Turner J. Turner	.372	4,456	1,173	3,899	582	1,147	248	8	158	593	413	97	684	33	7	1,885	414	3	44	14	99	.294	.483	.856	715	189.4	.367	134	187
22	Willie Kamm W. Kamm	.372	6,935	1,693	5,851	802	1,643	348	85	29	827	824	22	405	126		2,248	462	238				.281	.384	.756	932	63.3	.356	100	-4.3
23	Jimmy Dykes J. Dykes	.372	5,371	1,294	4,592	609	1,285	251	49	53	645	603	68	475	36		1,793	353	108			0	.280	.390	.762	742	64	.358	99	-10.4
24	Kevin Seitzer K. Seitzer	.371	5,051	1,193	4,411	611	1,286	232	31	57	500	545	29	499	74	48	1,751	320	32	34	24	114	.292	.397	.768	685	102	.346	112	77.6
25	Pinky Higgins P. Higgins	.370	7,554	1,802	6,636	931	1,941	374	51	140	1,075	800	22	590	61		2,837	565	96			112	.292	.428	.798	1104	209.8	.372	107	65.6