Mike Trout had the best on-base percentage in 2019, with an on-base percentage of .438.

Interpreted as:

best obp with a minimum of 3.1 PA per team game by a player in 2019

	NAME	OBP	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Mike Trout M. Trout	.438	2019	LAA	134	470	110	137	27	2	45	104	110	16	120	11	2	600	303	74	0	4	14	5	.291	.645	1.083	136	60.4	.436	176	58.5
2	Christian Yelich C. Yelich	.429	2019	MIL	130	489	100	161	29	3	44	97	80	8	118	30	2	580	328	76	0	3	16	8	.329	.671	1.100	134	61	.442	174	56.7
3	Alex Bregman A. Bregman	.423	2019	HOU	156	554	122	164	37	2	41	112	119	9	83	5	1	690	328	80	0	8	2	9	.296	.592	1.015	146	58.7	.418	167	59.1
4	Anthony Rendon A. Rendon	.412	2019	WSH	146	545	117	174	44	3	34	126	80	12	86	5	1	646	326	81	0	9	8	13	.319	.598	1.010	133	51.8	.413	155	47
5	Cody Bellinger C. Bellinger	.406	2019	LAD	156	558	121	170	34	3	47	115	95	3	108	15	5	660	351	84	0	4	21	10	.305	.629	1.035	137	54.2	.415	160	52.6
6	Anthony Rizzo A. Rizzo	.405	2019	CHC	146	512	89	150	29	3	27	94	71	27	86	5	2	613	266	59	0	3	3	15	.293	.520	.924	114	37	.390	140	32.5
7	Juan Soto J. Soto	.401	2019	WSH	150	542	110	153	32	5	34	110	108	3	132	12	1	659	297	71	0	6	3	11	.282	.548	.949	125	42.2	.394	143	37.3
8	Carlos Santana C. Santana	.397	2019	CLE	158	573	110	161	30	1	34	93	108	3	108	4	0	686	295	65	0	2	12	13	.281	.515	.911	122	35.4	.380	139	34
9	Nelson Cruz N. Cruz	.392	2019	MIN	120	454	81	141	26	0	41	108	56	7	131	0	1	520	290	67	0	3	8	14	.311	.639	1.031	109	43.8	.417	164	42.7
10	Mookie Betts M. Betts	.391	2019	BOS	150	597	135	176	40	5	29	80	97	3	101	16	3	706	313	74	0	9	6	11	.295	.524	.915	126	36.9	.380	134	31
11	Freddie Freeman F. Freeman	.389	2019	ATL	158	597	113	176	34	2	38	121	87	6	127	6	3	692	328	74	0	2	11	17	.295	.549	.938	127	40.2	.387	137	34.2
12	Ketel Marte K. Marte	.389	2019	ARI	144	569	97	187	36	9	32	92	53	4	86	10	2	628	337	77	0	2	2	7	.329	.592	.981	125	46	.405	150	41.4
13	Jeff McNeil J. McNeil	.384	2019	NYM	133	510	83	162	38	1	23	75	35	21	75	5	6	567	271	62	0	1	2	5	.318	.531	.916	103	31.6	.384	144	33.1
14	Xander Bogaerts X. Bogaerts	.384	2019	BOS	155	614	110	190	52	0	33	117	76	2	122	4	2	698	341	85	0	6	2	11	.309	.555	.939	130	42	.390	141	36.2
15	George Springer G. Springer	.383	2019	HOU	122	479	96	140	20	3	39	96	67	6	113	6	2	556	283	62	0	4	1	12	.292	.591	.974	109	38.7	.400	155	39
16	J.D. Martinez	.383	2019	BOS	146	575	98	175	33	2	36	105	72	4	138	2	0	656	320	71	0	5	9	19	.304	.557	.939	120	37.5	.386	138	32.1
17	Kris Bryant K. Bryant	.382	2019	CHC	147	543	108	153	35	1	31	77	74	15	145	4	0	634	283	67	0	2	1	10	.282	.521	.903	112	32.6	.379	133	27.9
18	Yasmani Grandal Y. Grandal	.380	2019	MIL	153	513	79	126	26	2	28	77	109	5	139	5	1	632	240	56	0	5	2	16	.246	.468	.848	102	22.3	.361	121	17.7
19	Josh Donaldson J. Donaldson	.379	2019	ATL	155	549	96	142	33	0	37	94	100	8	155	4	2	659	286	70	0	2	2	13	.259	.521	.900	116	32.7	.377	131	27
20	Nolan Arenado N. Arenado	.379	2019	COL	155	588	102	185	31	2	41	118	62	4	93	3	2	662	343	74	0	8	11	14	.315	.583	.962	124	41	.392	130	26.1
21	Luke Voit L. Voit	.378	2019	NYY	118	429	72	113	21	1	21	62	71	9	142	0	0	510	199	43	0	1	2	12	.263	.464	.842	82	17.6	.360	126	17.2
22	Bryan Reynolds B. Reynolds	.377	2019	PIT	134	491	83	154	37	4	16	68	46	6	121	3	2	546	247	57	0	3	0	9	.314	.503	.880	93	24.1	.371	130	21.5
23	DJ LeMahieu	.375	2019	NYY	145	602	109	197	33	2	26	102	46	2	90	5	2	655	312	61	1	4	0	14	.327	.518	.893	113	31	.375	136	30.6
24	Max Muncy M. Muncy	.374	2019	LAD	141	487	101	122	22	1	35	98	90	8	149	4	1	589	251	58	0	4	1	5	.251	.515	.889	101	26.8	.372	133	25.4
25	Bryce Harper B. Harper	.372	2019	PHI	157	573	98	149	36	1	35	114	99	6	178	15	3	682	292	72	0	4	11	10	.260	.510	.882	113	26.8	.365	124	21.8