Mickey Cochrane has the highest career on-base percentage by a catcher, with an on-base percentage of .419.

Interpreted as:

highest obp with a minimum of 3000 PA by a catcher 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	Mickey Cochrane M. Cochrane	.419	6,206	1,482	5,169	1,041	1,652	333	64	119	830	857	29	217	64		2,470	516	151				.320	.478	.897	1128	344.9	.413	132	269.2
2	Joe Mauer J. Mauer	.405	5,060	1,178	4,378	688	1,414	282	20	105	634	616	17	564	43	16	2,051	407	4	45	103	137	.323	.468	.873	820	221.9	.378	134	209.4
3	Wally Schang W. Schang	.396	5,573	1,616	4,610	664	1,327	240	71	51	623	745	83	482	89		1,862	362	135				.288	.404	.800	836	182.3	.382	119	128.3
4	Gene Tenace G. Tenace	.395	3,176	914	2,516	368	621	102	12	113	384	579	50	593	21	21	1,086	227	10	21	34	42	.247	.432	.826	492	138.9	.376	141	147.8
5	Roger Bresnahan R. Bresnahan	.385	3,939	1,102	3,244	467	875	149	47	12	383	557	51	274	147		1,154	208	87				.270	.356	.741	551	139.1	.366	124	102.4
6	Bill Dickey B. Dickey	.382	7,060	1,789	6,300	930	1,969	343	72	202	1,209	678	31	289	36		3,062	617	51			49	.313	.486	.868	1182	312.3	.396	126	253.9
7	Mike Piazza M. Piazza	.381	6,888	1,700	6,147	968	1,921	306	7	399	1,237	673	28	974	17	20	3,438	712	0	40	132	206	.313	.559	.940	1238	379.9	.397	145	399.8
8	Rick Ferrell R. Ferrell	.378	7,072	1,884	6,028	687	1,692	324	45	28	734	931	10	277	29		2,190	397	103			55	.281	.363	.741	945	86.8	.353	98	-15.5
9	Jorge Posada J. Posada	.377	6,763	1,714	5,748	866	1,583	365	10	261	1,021	897	72	1,377	20	19	2,751	636	1	45	74	169	.275	.479	.856	1063	228.8	.370	125	213.1
10	Buster Posey B. Posey	.372	5,607	1,371	4,970	663	1,500	293	9	158	729	540	43	721	23	9	2,285	460	1	53	67	163	.302	.460	.831	837	188.2	.358	129	190.6
11	Gabby Hartnett G. Hartnett	.370	7,297	1,990	6,432	867	1,912	396	64	236	1,179	703	35	697	28		3,144	696	127			19	.297	.489	.858	1186	271.2	.389	127	251.3
12	Victor Martinez V. Martinez	.369	4,224	1,004	3,739	509	1,120	235	3	131	638	411	28	482	3	3	1,754	369	0	46	52	133	.300	.469	.838	629	116.5	.361	120	106
13	Spud Davis S. Davis	.369	4,713	1,458	4,255	388	1,312	244	22	77	647	386	22	326	6		1,831	343	50			30	.308	.430	.799	690	101.5	.368	109	52.2
14	Mickey Tettleton M. Tettleton	.367	3,914	1,039	3,212	473	777	139	10	154	457	635	19	909	18	21	1,398	303	19	29	46	60	.242	.435	.803	565	121.3	.359	124	108.3
15	Chief Meyers C. Meyers	.367	3,226	992	2,834	276	826	120	41	14	369	274	63	174	44		1,070	175	55				.291	.378	.744	437	92.6	.363	118	73
16	Mike Stanley M. Stanley	.367	3,105	956	2,639	394	711	133	7	108	439	399	23	562	9	2	1,182	248	14	30	13	71	.269	.448	.814	461	89.8	.361	118	73.7
17	Chris Hoiles C. Hoiles	.366	3,338	894	2,820	415	739	122	2	151	449	435	44	616	5	7	1,318	275	11	28	17	65	.262	.467	.833	511	107.2	.368	122	89.9
18	Jason Kendall J. Kendall	.366	8,701	2,085	7,627	1,030	2,195	394	35	75	744	721	254	686	189	89	2,884	504	36	63	51	176	.288	.378	.744	1100	26.2	.334	99	-7.6
19	Muddy Ruel M. Ruel	.365	5,292	1,468	4,514	494	1,242	187	29	4	536	606	29	238	61		1,499	220	143				.275	.332	.697	618	-34	.337	89	-78.2
20	Smoky Burgess S. Burgess	.363	4,937	1,614	4,411	483	1,310	229	33	124	662	463	12	262	13	14	1,977	386	13	38	74	119	.297	.448	.811	699	138.6	.359	116	95.7
21	Joe Torre J. Torre	.362	4,801	1,196	4,322	559	1,289	181	30	163	652	404	43	608	12	23	2,019	374	6	26	53	161	.298	.467	.829	724	212.5	.366	132	177.4
22	Roy Campanella R. Campanella	.360	4,816	1,215	4,205	627	1,161	178	18	242	856	533	30	501	25	15	2,101	438	30	18	30	143	.276	.500	.860	755	193.4	.385	123	142.6
23	Bob O'Farrell B. O'Farrell	.360	4,742	1,492	4,101	517	1,120	201	58	51	549	547	11	408	35		1,590	310	83				.273	.388	.748	616	31.1	.352	100	4.3
24	Ernie Lombardi E. Lombardi	.358	6,349	1,853	5,855	601	1,792	277	27	190	990	430	46	262	8		2,693	494	18			143	.306	.460	.818	952	199.4	.376	125	194.9
25	Joe Ferguson J. Ferguson	.358	3,567	984	2,957	400	710	119	11	121	439	551	9	594	22	12	1,214	251	16	34	64	85	.240	.411	.768	468	73.3	.346	118	74.5