Carlos Santana has the most career bases on balls by an active player, with 1,278 bases on balls.

	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	Carlos Santana C. Santana	1,278	2,080	7,400	1,058	1,789	393	17	324	1,082	40	1,449	58	18	8,780	3,188	734	0	62	65	181	.242	.354	.431	.785	1211	187	.342	116	161.5
2	Andrew McCutchen A. McCutchen	1,116	2,127	7,873	1,239	2,152	429	50	319	1,095	92	1,775	219	89	9,156	3,638	798	3	72	69	135	.273	.367	.462	.829	1378	315	.359	127	293.3
3	Paul Goldschmidt P. Goldschmidt	1,050	1,928	7,119	1,204	2,056	446	23	362	1,187	49	1,879	169	35	8,273	3,634	831	0	55	116	166	.289	.381	.510	.892	1398	428.9	.379	139	384.4
4	Bryce Harper B. Harper	1,035	1,653	5,934	1,082	1,670	369	24	336	976	46	1,533	140	50	7,085	3,095	729	13	57	131	134	.281	.389	.522	.911	1231	399.5	.384	142	362
5	Freddie Freeman F. Freeman	1,010	2,032	7,558	1,298	2,267	508	31	343	1,232	107	1,635	98	30	8,736	3,866	882	0	61	135	159	.300	.387	.512	.899	1497	477.5	.382	142	444.3
6	Mike Trout M. Trout	980	1,518	5,510	1,123	1,648	311	54	378	954	100	1,484	212	38	6,645	3,201	743	0	55	120	68	.299	.411	.581	.991	1313	541.9	.415	169	544.4
7	Giancarlo Stanton G. Stanton	776	1,649	6,025	907	1,551	305	11	429	1,103	53	1,963	42	15	6,893	3,165	745	0	39	88	153	.257	.345	.525	.871	1093	294.9	.368	135	288.9
8	Christian Yelich C. Yelich	770	1,466	5,535	945	1,590	306	35	204	748	45	1,381	205	36	6,381	2,578	545	5	26	54	117	.287	.377	.466	.843	1002	251.8	.363	130	234.8
9	Juan Soto J. Soto	769	936	3,280	655	934	179	15	201	592	16	696	57	23	4,087	1,746	395	2	20	67	84	.285	.421	.532	.953	790	299.8	.404	158	290.5
10	Aaron Judge A. Judge	693	993	3,564	736	1,026	173	5	315	716	33	1,209	53	16	4,316	2,154	493	0	26	68	100	.288	.406	.604	1.010	887	370.9	.420	174	374.5
11	Mookie Betts M. Betts	675	1,381	5,494	1,071	1,615	371	39	271	831	49	856	188	39	6,273	2,877	681	4	51	33	71	.294	.373	.524	.897	1077	331.8	.380	140	303.1
12	Kyle Schwarber K. Schwarber	656	1,129	3,940	689	905	152	12	284	652	39	1,330	27	17	4,660	1,933	448	1	24	41	49	.230	.343	.491	.834	705	147.7	.354	123	128.7
13	Manny Machado M. Machado	608	1,735	6,809	991	1,900	363	18	342	1,049	27	1,302	99	38	7,517	3,325	723	14	59	68	208	.279	.338	.488	.826	1098	214.7	.350	123	205.7
14	George Springer G. Springer	607	1,305	5,057	876	1,326	222	22	261	712	77	1,204	102	40	5,773	2,375	505	2	30	11	107	.262	.348	.470	.818	858	174.1	.352	126	183.6
15	José Ramírez J. Ramírez	600	1,451	5,377	898	1,500	364	40	255	864	37	728	243	55	6,085	2,709	659	19	52	88	78	.279	.352	.504	.856	945	222.2	.360	129	213.9
16	Jose Altuve J. Altuve	600	1,821	7,293	1,156	2,232	431	31	229	812	76	1,030	315	90	8,042	3,412	691	26	47	45	195	.306	.363	.468	.831	1217	279.7	.357	130	284.1
17	Eugenio Suárez E. Suárez	586	1,471	5,232	740	1,300	234	15	276	831	87	1,618	32	19	5,970	2,392	525	9	56	14	119	.248	.331	.457	.788	821	111.5	.338	111	83.8
18	Marcus Semien M. Semien	581	1,502	5,895	906	1,505	307	35	238	739	22	1,212	128	39	6,538	2,596	580	7	33	8	94	.255	.323	.440	.763	849	73.6	.329	109	76.8
19	DJ LeMahieu	561	1,628	6,004	883	1,738	275	39	124	651	31	1,013	93	49	6,680	2,463	438	37	47	24	185	.289	.351	.410	.761	874	88.7	.331	100	6.2
20	Nolan Arenado N. Arenado	549	1,680	6,406	944	1,826	387	33	341	1,132	40	1,045	28	23	7,076	3,302	761	5	76	76	192	.285	.342	.515	.857	1094	261.5	.360	118	156.6
21	Anthony Rendon A. Rendon	547	1,173	4,350	683	1,218	295	16	158	671	64	779	55	17	5,022	2,019	469	4	57	30	94	.280	.364	.464	.829	757	168.3	.356	122	141.1
22	Xander Bogaerts X. Bogaerts	545	1,530	5,858	885	1,693	354	18	186	785	54	1,176	106	22	6,517	2,641	558	5	55	20	148	.289	.352	.451	.803	934	164.7	.346	116	127
23	Max Muncy M. Muncy	540	920	2,980	545	679	135	8	195	537	44	886	14	4	3,592	1,415	338	0	28	23	32	.228	.352	.475	.826	544	113.3	.353	125	111.7
24	Francisco Lindor F. Lindor	523	1,375	5,442	894	1,492	304	26	248	770	64	989	185	45	6,116	2,592	578	31	56	34	100	.274	.342	.476	.818	891	161.4	.348	120	150.3
25	Matt Olson M. Olson	522	1,061	3,872	614	985	209	5	259	713	52	1,062	8	2	4,473	1,981	473	0	27	44	91	.254	.349	.512	.860	713	177.3	.363	133	179