Mickey Mantle has the highest career on-base percentage by a switch-hitter, with an on-base percentage of .421.

Interpreted as:

highest career obp with a minimum of 3000 PA by a switch hitter

	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	Mickey Mantle M. Mantle	.421	9,909	2,401	8,102	1,676	2,415	344	72	536	1,509	1,733	13	1,710	153	38	4,511	952	14	47	126	113	.298	.557	.977	1941	840	.428	170	821.8
2	Roy Cullenbine R. Cullenbine	.408	4,787	1,181	3,879	627	1,072	209	32	110	599	853	11	399	26		1,675	351	44			61	.276	.432	.840	773	243.9	.399	136	198.8
3	Lance Berkman L. Berkman	.406	7,813	1,879	6,491	1,146	1,905	422	30	366	1,234	1,201	66	1,300	86	48	3,485	818	1	54	160	147	.293	.537	.943	1424	477.5	.400	144	432.3
4	Lu Blue L. Blue	.402	7,207	1,615	5,904	1,152	1,696	319	109	44	695	1,092	43	436	151		2,365	472	168				.287	.401	.803	1102	191.5	.380	112	118
5	Chipper Jones C. Jones	.401	10,614	2,499	8,984	1,619	2,726	549	38	468	1,623	1,512	18	1,409	150	46	4,755	1,055	3	97	177	253	.303	.529	.930	1904	598.1	.397	141	563
6	Wally Schang W. Schang	.393	6,423	1,842	5,307	769	1,506	264	90	59	705	849	107	573	121		2,127	413	160				.284	.401	.794	951	213.1	.380	120	153
7	Augie Galan A. Galan	.390	7,003	1,742	5,937	1,004	1,706	336	74	100	830	979	25	393	123		2,490	510	62			47	.287	.419	.810	1058	236.2	.382	125	209.2
8	Ken Singleton K. Singleton	.388	8,558	2,082	7,189	985	2,029	317	25	246	1,065	1,263	17	1,246	21	36	3,134	588	29	60	125	248	.282	.436	.824	1288	349.1	.371	134	330.3
9	Tim Raines T. Raines	.385	10,359	2,502	8,872	1,571	2,605	430	113	170	980	1,330	42	966	808	146	3,771	713	39	76	148	142	.294	.425	.810	1517	318.9	.361	125	306.9
10	Miller Huggins M. Huggins	.382	6,800	1,586	5,558	948	1,474	146	50	9	318	1,003	47	556	324		1,747	205	192				.265	.314	.696	873	162.4	.350	111	88.5
11	Bernie Williams B. Williams	.381	9,053	2,076	7,869	1,366	2,336	449	55	287	1,257	1,069	39	1,212	147	87	3,756	791	12	64	97	223	.297	.477	.858	1440	321.1	.373	126	301.2
12	Sammy Strang S. Strang	.377	3,512	903	2,933	479	790	112	28	16	253	464	43	394	216		1,006	156	72				.269	.343	.720	496	97.6	.356	117	66.4
13	Pete Rose P. Rose	.375	15,861	3,562	14,053	2,165	4,256	746	135	160	1,314	1,566	107	1,143	198	149	5,752	1,041	56	79	167	247	.303	.409	.784	2190	480.1	.354	121	368.7
14	Tony Phillips T. Phillips	.374	9,110	2,161	7,617	1,300	2,023	360	50	160	819	1,319	42	1,499	177	114	2,963	570	69	63	44	127	.266	.389	.763	1239	164	.347	112	137.5
15	Jorge Posada J. Posada	.374	7,150	1,829	6,092	900	1,664	379	10	275	1,065	936	74	1,453	20	21	2,888	664	1	47	78	186	.273	.474	.848	1106	227.9	.367	123	209.3
16	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
17	Quilvio Veras Q. Veras	.372	3,293	767	2,780	469	750	129	15	32	239	427	38	462	183	83	1,005	176	29	19	4	44	.270	.362	.734	422	5.9	.336	103	11.9
18	Roberto Alomar R. Alomar	.371	10,400	2,379	9,073	1,508	2,724	504	80	210	1,134	1,032	50	1,140	474	114	4,018	794	148	97	62	206	.300	.443	.814	1526	275.7	.359	118	230.8
19	Mickey Tettleton M. Tettleton	.369	5,745	1,485	4,698	711	1,132	210	16	245	732	949	30	1,307	23	29	2,109	471	21	47	72	86	.241	.449	.818	850	178.9	.363	122	148.2
20	Frankie Frisch F. Frisch	.369	10,100	2,311	9,112	1,532	2,880	466	138	105	1,244	728	31	272	419		3,937	709	229				.316	.432	.801	1469	211	.370	112	164.5
21	Luis Castillo L. Castillo	.368	7,471	1,720	6,510	1,001	1,889	194	59	28	443	800	12	850	370	142	2,285	281	123	26	13	120	.290	.351	.719	901	-23.2	.327	97	-26
22	Reggie Smith R. Smith	.366	8,050	1,987	7,033	1,123	2,020	363	57	314	1,092	890	33	1,030	137	86	3,439	734	8	86	115	150	.287	.489	.855	1254	395	.379	137	333.7
23	Bill North B. North	.365	4,621	1,169	3,900	640	1,016	120	31	20	230	627	25	665	395	162	1,258	171	55	14	28	50	.261	.323	.688	526	19.8	.324	106	31.6
24	Tommy Tucker T. Tucker	.364	7,273	1,688	6,482	1,084	1,882	240	85	42	932	481	272	249	352		2,418	367	38				.290	.373	.737	1209	111.5	.358	104	44.1
25	Milton Bradley M. Bradley	.364	4,178	1,042	3,605	541	976	202	17	125	481	496	44	817	88	40	1,587	344	14	19	38	91	.271	.440	.804	591	82.2	.352	114	71.3