Juan Soto has the best career on-base percentage by an active player, with an on-base percentage of .418.

Interpreted as:

highest career obp with a minimum of 1500 PA active MLB player

	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	Juan Soto J. Soto	.418	4,419	1,010	3,546	707	1,000	193	15	215	629	830	17	748	65	24	1,868	423	2	24	72	98	.282	.527	.945	842	313.9	.401	157	305.8
2	Aaron Judge A. Judge	.410	4,644	1,067	3,840	802	1,127	191	7	341	776	741	36	1,293	59	19	2,355	539	0	27	84	108	.293	.613	1.023	971	417.1	.425	177	421.1
3	Mike Trout M. Trout	.408	6,846	1,566	5,684	1,145	1,689	313	55	390	982	1,003	101	1,538	214	38	3,282	758	0	58	124	71	.297	.577	.985	1340	545.3	.413	168	547.6
4	Bryce Harper B. Harper	.388	7,338	1,710	6,147	1,114	1,725	382	24	345	1,010	1,070	49	1,580	148	50	3,190	751	13	59	133	136	.281	.519	.907	1269	408.2	.383	142	370.3
5	Freddie Freeman F. Freeman	.388	9,007	2,096	7,796	1,336	2,346	529	32	352	1,273	1,038	109	1,688	98	31	3,995	913	0	64	140	166	.301	.512	.900	1547	496.5	.382	142	463.7
6	Yordan Alvarez Y. Alvarez	.387	2,789	658	2,390	419	704	152	6	167	484	334	40	554	9	1	1,369	325	0	25	40	59	.295	.573	.959	532	198.9	.401	162	205
7	Ronald Acuña Jr. R. Acuña Jr.	.383	3,355	746	2,903	604	847	148	12	173	431	387	50	742	197	49	1,538	333	0	15	19	43	.292	.530	.913	603	198.9	.387	143	180.4
8	Paul Goldschmidt P. Goldschmidt	.381	8,570	2,002	7,390	1,250	2,138	461	24	370	1,219	1,073	51	1,933	174	35	3,757	855	0	56	119	170	.289	.508	.889	1441	438.4	.378	138	394.3
9	Christian Yelich C. Yelich	.375	6,678	1,536	5,799	980	1,654	313	35	218	792	799	48	1,463	216	39	2,691	566	5	27	56	121	.285	.464	.839	1040	255.3	.362	129	238.1
10	Shohei Ohtani S. Ohtani	.372	3,931	933	3,410	635	963	179	41	250	610	477	24	1,003	156	41	1,974	470	0	20	77	44	.282	.579	.951	728	259.9	.395	155	255.2
11	Mookie Betts M. Betts	.372	6,574	1,449	5,757	1,119	1,683	379	40	280	867	710	50	885	194	39	2,982	699	4	53	35	76	.292	.518	.890	1115	335.6	.378	139	307.1
12	Yandy Díaz Y. Díaz	.368	3,405	822	2,988	424	856	168	7	85	383	372	26	508	11	7	1,293	260	0	19	11	83	.286	.433	.801	503	96.6	.349	129	114.5
13	Kris Bryant K. Bryant	.368	4,550	1,054	3,919	667	1,068	233	19	184	548	504	103	1,064	44	20	1,891	436	0	24	21	63	.273	.483	.851	724	180.8	.364	126	148.3
14	Brendan Donovan B. Donovan	.367	1,783	441	1,567	215	449	86	5	34	179	162	42	245	15	10	647	125	3	9	5	20	.287	.413	.780	254	45.4	.344	122	46.5
15	Andrew McCutchen A. McCutchen	.367	9,413	2,192	8,098	1,262	2,212	442	50	326	1,122	1,144	94	1,827	220	89	3,732	818	3	74	70	139	.273	.461	.827	1413	320.1	.358	127	297.5
16	Alex Bregman A. Bregman	.366	5,058	1,162	4,354	726	1,191	282	18	202	698	598	64	688	43	15	2,115	502	1	41	15	111	.274	.486	.852	812	206.3	.365	135	215.9
17	Luis Arraez L. Arraez	.366	3,151	753	2,896	403	924	155	17	31	274	209	19	199	23	14	1,206	203	7	20	18	59	.319	.416	.783	444	68.1	.340	118	68.1
18	Jesse Winker J. Winker	.366	2,853	779	2,431	352	636	127	5	96	334	365	42	531	18	7	1,061	228	4	11	11	56	.262	.436	.803	424	83.5	.350	120	70.3
19	Brandon Nimmo B. Nimmo	.366	4,005	982	3,401	546	884	174	32	123	410	497	82	890	47	18	1,491	329	8	17	7	43	.260	.438	.804	599	122.3	.352	127	131.9
20	Vladimir Guerrero Jr. V. Guerrero Jr.	.365	3,862	892	3,418	518	983	193	6	169	545	392	34	596	22	12	1,695	368	0	18	36	111	.288	.496	.861	628	165.7	.367	137	168
21	Anthony Rendon A. Rendon	.364	5,022	1,173	4,350	683	1,218	295	16	158	671	547	64	779	55	17	2,019	469	4	57	30	94	.280	.464	.829	757	168.3	.356	122	141.1
22	Justin Turner J. Turner	.361	6,425	1,718	5,638	803	1,600	349	9	199	825	584	136	995	46	13	2,564	557	5	62	18	145	.284	.455	.816	955	199.3	.353	125	197.1
23	Jose Altuve J. Altuve	.361	8,343	1,892	7,571	1,191	2,309	441	31	241	846	619	77	1,077	321	94	3,535	713	26	50	47	201	.305	.467	.828	1255	283.9	.356	129	288.9
24	Steven Kwan S. Kwan	.360	2,197	497	1,951	298	560	91	17	31	173	210	18	210	62	14	778	139	6	12	4	24	.287	.399	.758	296	37.7	.335	118	45.4
25	Corey Seager C. Seager	.359	4,628	1,073	4,127	660	1,190	257	13	206	631	436	36	826	18	8	2,091	476	0	29	46	88	.288	.507	.866	746	192.3	.366	134	191