Bryce Harper has the most career walks by an active player, with 1,105 walks.

Interpreted as:

most base on balls by a player of all-time active

	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	Bryce Harper B. Harper	1,105	1,785	6,435	1,154	1,801	401	24	363	1,051	52	1,654	152	52	7,665	3,339	788	13	60	137	139	.280	.387	.519	.905	1322	422.1	.382	141	384.3
2	Freddie Freeman F. Freeman	1,070	2,179	8,114	1,379	2,431	547	33	367	1,322	113	1,763	104	32	9,363	4,145	947	0	66	142	172	.300	.386	.511	.897	1600	506.4	.381	142	474.4
3	Mike Trout M. Trout	1,067	1,648	5,966	1,196	1,754	325	55	404	1,018	106	1,662	214	38	7,200	3,401	784	0	61	130	75	.294	.407	.570	.977	1392	555.5	.410	166	556.8
4	Juan Soto J. Soto	896	1,096	3,857	775	1,086	199	16	244	697	19	833	95	27	4,801	2,049	459	3	26	80	101	.282	.417	.531	.948	919	344.3	.402	158	338.1
5	Christian Yelich C. Yelich	834	1,616	6,108	1,033	1,741	327	35	233	851	51	1,548	221	42	7,025	2,837	595	5	27	60	123	.285	.374	.464	.839	1094	267.5	.361	129	250.3
6	Aaron Judge A. Judge	817	1,145	4,105	873	1,205	203	7	368	830	40	1,369	65	21	4,995	2,526	578	0	33	104	116	.294	.413	.615	1.028	1050	453.4	.425	178	457.2
7	Giancarlo Stanton G. Stanton	805	1,726	6,274	943	1,619	313	11	453	1,169	54	2,059	42	15	7,173	3,313	777	0	40	91	158	.258	.345	.528	.874	1145	313.5	.369	136	307.6
8	Mookie Betts M. Betts	736	1,531	6,083	1,166	1,767	394	41	291	913	52	924	196	41	6,936	3,116	726	4	61	35	86	.290	.369	.512	.881	1158	334.4	.374	136	307
9	George Springer G. Springer	676	1,445	5,555	982	1,480	249	23	293	796	85	1,315	120	41	6,352	2,654	565	2	34	14	121	.266	.353	.478	.831	971	218.7	.357	130	229
10	José Ramírez J. Ramírez	666	1,609	5,970	1,001	1,668	398	43	285	949	45	802	287	62	6,757	3,007	726	19	57	110	87	.279	.353	.504	.857	1050	247.6	.360	130	240.3
11	Manny Machado M. Machado	663	1,894	7,424	1,082	2,069	396	18	369	1,144	30	1,433	113	41	8,195	3,608	783	14	64	72	224	.279	.338	.486	.824	1193	230.2	.350	123	224.1
12	Jose Altuve J. Altuve	655	1,976	7,881	1,236	2,388	455	32	255	889	80	1,139	325	96	8,696	3,672	742	27	53	50	215	.303	.360	.466	.826	1304	289.5	.355	129	294.8
13	Marcus Semien M. Semien	631	1,629	6,365	968	1,613	323	36	253	801	27	1,305	139	40	7,072	2,767	612	7	42	8	102	.253	.321	.435	.756	904	65.7	.326	108	69
14	Matt Olson M. Olson	613	1,223	4,496	712	1,155	250	7	288	808	56	1,238	9	2	5,197	2,283	545	0	32	46	105	.257	.351	.508	.859	830	208.7	.363	133	209.2
15	Max Muncy M. Muncy	604	1,020	3,293	593	755	145	10	214	604	50	969	18	4	3,980	1,562	369	0	33	25	36	.229	.354	.474	.828	607	130	.355	126	129.1
16	Xander Bogaerts X. Bogaerts	593	1,666	6,349	948	1,822	384	18	197	838	58	1,270	126	24	7,069	2,833	599	6	63	23	160	.287	.350	.446	.796	999	164.8	.343	115	129.5
17	Justin Turner J. Turner	589	1,758	5,709	811	1,617	354	9	201	832	136	1,012	47	13	6,502	2,592	564	5	63	18	146	.283	.360	.454	.814	963	197.8	.352	125	196.1
18	Francisco Lindor F. Lindor	588	1,535	6,086	1,011	1,664	339	26	279	856	80	1,120	216	51	6,848	2,892	644	31	63	36	109	.273	.342	.475	.817	999	183.5	.348	121	175.6
19	Nolan Arenado N. Arenado	577	1,787	6,807	992	1,921	405	34	353	1,184	43	1,094	31	23	7,512	3,453	792	5	80	80	202	.282	.338	.507	.846	1136	252.2	.356	116	148.1
20	Carlos Correa C. Correa	552	1,253	4,716	686	1,298	264	13	200	724	30	1,086	33	9	5,343	2,188	477	0	45	28	151	.275	.352	.464	.816	786	150.7	.350	125	159.5
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	Shohei Ohtani S. Ohtani	541	1,018	3,730	708	1,050	192	45	280	669	25	1,104	165	43	4,316	2,172	517	0	20	88	49	.282	.374	.582	.957	807	292.3	.397	156	288.6
23	Ian Happ I. Happ	540	1,139	3,845	567	950	217	16	173	557	34	1,175	70	25	4,449	1,718	406	5	25	24	70	.247	.343	.447	.790	626	94.9	.341	116	89.6
24	Joc Pederson J. Pederson	531	1,368	3,952	606	935	191	18	218	575	89	1,085	31	27	4,604	1,816	427	6	26	27	69	.237	.338	.460	.798	648	101.8	.342	117	97.7
25	Brandon Nimmo B. Nimmo	524	1,066	3,723	593	974	188	32	135	463	87	974	54	18	4,365	1,631	355	9	22	7	46	.262	.364	.438	.802	648	128.5	.350	126	140