Rick Ferrell has the most career bases on balls by a catcher, with 931 walks.

	NAME	BB	G	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Rick Ferrell R. Ferrell	931	1,884	6,028	687	1,692	324	45	28	734	10	277	29		7,072	2,190	397	103			55	.281	.378	.363	.741	945	86.8	.353	98	-15.5
2	Jorge Posada J. Posada	897	1,714	5,748	866	1,583	365	10	261	1,021	72	1,377	20	19	6,763	2,751	636	1	45	74	169	.275	.377	.479	.856	1063	228.8	.370	125	213.1
3	Darrell Porter D. Porter	875	1,697	5,409	746	1,338	234	48	181	805	43	982	39	37	6,407	2,211	463	18	62	102	100	.247	.353	.409	.762	827	114.8	.342	113	97
4	Mickey Cochrane M. Cochrane	857	1,482	5,169	1,041	1,652	333	64	119	830	29	217	64		6,206	2,470	516	151				.320	.419	.478	.897	1128	344.9	.413	132	269.2
5	Carlton Fisk C. Fisk	839	2,408	8,436	1,227	2,269	398	45	366	1,288	137	1,348	125	58	9,513	3,855	809	25	76	105	195	.269	.342	.457	.799	1320	264.6	.355	118	190.7
6	Johnny Bench J. Bench	813	1,877	6,771	1,001	1,811	342	22	356	1,259	19	1,161	67	38	7,700	3,265	720	9	88	129	170	.267	.344	.482	.826	1115	288.8	.365	128	243.8
7	Russell Martin R. Martin	792	1,693	5,701	803	1,416	255	9	191	771	107	1,211	101	51	6,648	2,262	455	12	36	46	190	.248	.349	.397	.746	829	50.1	.330	104	34
8	Gary Carter G. Carter	776	2,152	7,468	967	1,956	351	30	307	1,157	67	914	34	40	8,429	3,288	688	23	95	98	173	.262	.333	.440	.773	1096	147.3	.341	116	151.4
9	Wally Schang W. Schang	745	1,616	4,610	664	1,327	240	71	51	623	83	482	89		5,573	1,862	362	135				.288	.396	.404	.800	836	182.3	.382	119	128.3
10	Jason Kendall J. Kendall	721	2,085	7,627	1,030	2,195	394	35	75	744	254	686	189	89	8,701	2,884	504	36	63	51	176	.288	.366	.378	.744	1100	26.2	.334	99	-7.6
11	Ted Simmons T. Simmons	720	1,954	7,244	930	2,116	413	43	222	1,195	34	576	15	31	8,094	3,281	678	9	87	164	238	.292	.355	.453	.808	1126	242.7	.357	122	206.1
12	Gabby Hartnett G. Hartnett	703	1,990	6,432	867	1,912	396	64	236	1,179	35	697	28		7,297	3,144	696	127			19	.297	.370	.489	.858	1186	271.2	.389	127	251.3
13	Jim Sundberg J. Sundberg	699	1,962	6,021	621	1,493	243	36	95	624	22	963	20	37	6,898	2,093	374	118	38	31	159	.248	.327	.348	.674	718	-51.7	.309	91	-72.9
14	Yasmani Grandal Y. Grandal	679	1,307	4,138	535	977	183	7	194	592	26	1,124	13	7	4,885	1,756	384	6	36	11	126	.236	.345	.424	.769	657	80.3	.335	112	75
15	Bill Dickey B. Dickey	678	1,789	6,300	930	1,969	343	72	202	1,209	31	289	36		7,060	3,062	617	51			49	.313	.382	.486	.868	1182	312.3	.396	126	253.9
16	Mike Piazza M. Piazza	673	1,700	6,147	968	1,921	306	7	399	1,237	28	974	17	20	6,888	3,438	712	0	40	132	206	.313	.381	.559	.940	1238	379.9	.397	145	399.8
17	Sherm Lollar S. Lollar	671	1,752	5,351	623	1,415	244	14	155	808	115	453	20	7	6,218	2,152	413	47	34	49	184	.264	.357	.402	.759	807	89.2	.346	106	42.8
18	Yogi Berra Y. Berra	669	2,001	7,160	1,113	2,043	310	49	336	1,369	50	386	28	19	7,927	3,459	695	9	39	45	139	.285	.349	.483	.832	1173	257.6	.371	124	238.4
19	Bob Boone B. Boone	663	2,264	7,245	679	1,838	303	26	105	826	20	608	38	50	8,148	2,508	434	142	78	90	191	.254	.315	.346	.661	780	-130.6	.298	82	-174.8
20	Brian McCann B. McCann	640	1,755	6,067	742	1,590	294	5	282	1,018	75	1,054	25	9	6,850	2,740	581	9	59	71	180	.262	.337	.452	.789	910	106.6	.340	110	83.7
21	Ray Schalk R. Schalk	638	1,762	5,306	579	1,345	199	49	11	594	59	358	177		6,217	1,675	259	214				.253	.340	.316	.656	644	-49.7	.321	88	-97.8
22	Mickey Tettleton M. Tettleton	635	1,039	3,212	473	777	139	10	154	457	19	909	18	21	3,914	1,398	303	19	29	46	60	.242	.367	.435	.803	565	121.3	.359	124	108.3
23	Brad Ausmus B. Ausmus	634	1,971	6,279	718	1,579	270	34	80	607	69	1,034	102	53	7,101	2,157	384	82	37	69	201	.251	.325	.344	.669	687	-197.8	.299	76	-222.5
24	Butch Wynegar B. Wynegar	626	1,301	4,330	498	1,102	176	15	65	506	17	428	10	13	5,067	1,503	256	58	36	41	119	.255	.348	.347	.695	569	0.6	.320	96	-22.1
25	Joe Mauer J. Mauer	616	1,178	4,378	688	1,414	282	20	105	634	17	564	43	16	5,060	2,051	407	4	45	103	137	.323	.405	.468	.873	820	221.9	.378	134	209.4