Ted Williams had the highest on-base percentage in 1951, with an on-base percentage of .464.

Interpreted as:

best obp with a minimum of 3.1 PA per team game by an MLB player 1951

	NAME	OBP	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Ted Williams T. Williams	.464	1951	BSA	148	531	109	169	28	4	30	126	144	0	45	1	1	675	295	62	0	10	.318	.556	1.019	146	66.5	.463	166	55.4
2	Ralph Kiner R. Kiner	.452	1951	PIT	151	531	124	164	31	6	42	109	137	2	57	2	1	670	333	79	0	10	.309	.627	1.079	153	74.7	.479	179	65.8
3	Ferris Fain F. Fain	.451	1951	PHA	117	425	63	146	30	3	6	57	80	3	20	0	3	511	200	39	3	10	.344	.471	.921	97	36.7	.428	150	31.8
4	Stan Musial S. Musial	.449	1951	SLN	152	578	124	205	30	12	32	108	98	1	40	4	5	678	355	74	1	6	.355	.614	1.063	153	73.6	.475	180	67.8
5	Jackie Robinson J. Robinson	.429	1951	BKN	153	548	106	185	33	7	19	88	79	9	27	25	8	642	289	59	6	10	.338	.527	.957	125	50	.436	156	44.5
6	Larry Doby L. Doby	.428	1951	CLE	134	447	84	132	27	5	20	69	101	3	81	4	1	551	229	52	0	10	.295	.512	.941	105	40.3	.430	159	40.3
7	Eddie Yost E. Yost	.423	1951	WSH	154	568	109	161	36	4	12	65	126	11	55	6	4	716	241	52	11	7	.283	.424	.847	119	35.2	.399	137	32.6
8	Minnie Minoso M. Minoso	.422	1951	TOT	146	530	112	173	34	14	10	76	72	16	42	31	10	622	265	58	4	12	.326	.500	.922	115	41.8	.423	150	38.9
9	Johnny Pesky J. Pesky	.417	1951	BSA	131	480	93	150	20	6	3	41	84	2	15	2	2	573	191	29	7	10	.313	.398	.815	89	22	.386	118	12.5
10	Monte Irvin M. Irvin	.415	1951	NYG	151	558	94	174	19	11	24	121	89	9	44	12	2	657	287	54	1	15	.312	.514	.929	122	44.8	.424	149	39.9
11	Elmer Valo E. Valo	.412	1951	PHA	123	444	75	134	27	8	7	55	75	8	20	11	6	530	198	42	3	12	.302	.446	.858	88	25.9	.399	132	20.9
12	Eddie Joost E. Joost	.409	1951	PHA	140	553	107	160	28	5	19	78	106	6	70	10	8	667	255	52	2	6	.289	.461	.870	113	34.8	.403	134	28.5
13	Eddie Stanky E. Stanky	.401	1951	NYG	145	515	88	127	17	2	14	43	127	6	63	8	5	653	190	33	5	5	.247	.369	.770	94	17.7	.371	116	12.8
14	Solly Hemus S. Hemus	.395	1951	SLN	120	420	68	118	18	9	2	32	75	4	31	7	7	507	160	29	8	6	.281	.381	.776	72	12.5	.368	113	8.1
15	Roy Campanella R. Campanella	.393	1951	BKN	143	505	90	164	33	1	33	108	53	4	51	1	2	562	298	67	0	19	.325	.590	.983	111	45.5	.440	158	40.7
16	Richie Ashburn R. Ashburn	.393	1951	PHN	154	643	92	221	31	5	4	63	50	2	37	29	6	712	274	40	17	4	.344	.426	.819	108	24.2	.380	124	21.4
17	Billy Goodman B. Goodman	.388	1951	BSA	141	546	92	162	34	4	0	50	79	2	37	7	4	638	204	38	11	12	.297	.374	.761	87	12	.361	102	1.5
18	Enos Slaughter E. Slaughter	.386	1951	SLN	123	409	48	115	17	8	4	64	67	3	25	7	2	483	160	29	4	10	.281	.391	.777	68	11.3	.366	112	7.1
19	George Kell G. Kell	.386	1951	DET	147	598	92	191	36	3	2	59	61	4	18	10	3	674	239	41	11	13	.319	.400	.786	96	16.5	.368	112	10.1
20	Bobby Thomson B. Thomson	.385	1951	NYG	148	518	89	152	27	8	32	101	73	4	57	5	5	602	291	67	7	14	.293	.562	.947	112	41.3	.424	149	36.8
21	Vic Wertz V. Wertz	.383	1951	DET	138	501	86	143	24	4	27	94	78	1	61	0	3	581	256	55	1	13	.285	.511	.894	100	31.5	.406	136	26
22	Sid Gordon S. Gordon	.383	1951	BSN	150	550	96	158	28	1	29	109	80	5	32	2	0	641	275	58	6	28	.287	.500	.883	108	33.1	.403	140	32.1
23	Johnny Wyrostek J. Wyrostek	.376	1951	CIN	142	537	52	167	31	3	2	61	54	2	54	2	1	598	210	36	5	10	.311	.391	.767	81	10.5	.359	108	6.1
24	Earl Torgeson E. Torgeson	.375	1951	BSN	155	581	99	153	21	4	24	92	102	2	70	20	11	690	254	49	5	18	.263	.437	.812	103	21.9	.377	124	20.8
25	Bobby Avila B. Avila	.374	1951	CLE	141	542	76	165	21	3	10	58	60	0	31	14	8	615	222	34	13	16	.304	.410	.783	86	13.6	.365	118	13.6