Between the 1950 and 1959 seasons, Ted Williams had the best on-base percentage, with an on-base percentage of .476.

Interpreted as:

best obp with a minimum of 1.55 PA per team game by an MLB player 1950s

	NAME	OBP	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	Ted Williams T. Williams	.476	995	3,175	660	1,068	196	15	227	729	845	15	292	7	3	4,053	1,975	438	0	18	79	91	.336	.622	1.098	942	472.7	.477	184	412.4
2	Joe Cunningham J. Cunningham	.432	486	1,369	217	434	74	12	39	219	270	15	140	10	14	1,669	649	125	5	10	18	24	.317	.474	.906	297	108.6	.405	140	83
3	Ferris Fain F. Fain	.431	720	2,424	363	721	137	13	31	333	560	13	139	24	12	3,021	977	181	16	8	3	70	.297	.403	.834	492	138.4	.394	130	111.8
4	Eddie Stanky E. Stanky	.427	367	1,155	221	312	46	7	22	102	296	19	126	17	5	1,489	438	75	19			13	.270	.379	.806	236	57.3	.388	125	47.9
5	Mickey Mantle M. Mantle	.425	1,246	4,478	994	1,392	208	54	280	841	892	9	899	98	25	5,409	2,548	542	12	18	54	44	.311	.569	.994	1086	467.8	.437	172	466
6	Stan Musial S. Musial	.421	1,456	5,366	948	1,771	356	61	266	972	842	24	339	28	30	6,272	3,047	683	7	33	90	133	.330	.568	.989	1240	514.7	.435	157	446.2
7	Jackie Robinson J. Robinson	.416	928	3,120	592	970	166	29	97	477	523	48	191	109	30	3,751	1,485	292	51	9	7	79	.311	.476	.892	656	218.3	.408	138	179.1
8	Eddie Yost E. Yost	.406	1,439	5,075	898	1,312	232	32	111	500	1,185	81	626	55	41	6,425	1,941	375	70	14	14	82	.259	.382	.788	953	209.8	.371	122	170.9
9	Elmer Valo E. Valo	.403	925	2,456	366	700	125	32	36	311	476	21	150	49	30	2,986	997	193	19	14	11	57	.285	.406	.809	449	102.7	.376	120	71.8
10	Minnie Minoso M. Minoso	.400	1,337	4,979	898	1,526	259	74	145	790	648	149	413	167	106	5,866	2,368	478	57	33	17	141	.306	.476	.875	983	311.7	.395	140	283.8
11	Richie Ashburn R. Ashburn	.399	1,523	5,997	952	1,875	252	82	19	422	828	37	395	158	75	6,965	2,348	353	90	13	20	63	.313	.392	.790	1003	199.3	.365	117	148.9
12	Ralph Kiner R. Kiner	.398	868	3,034	570	833	138	22	201	557	610	17	437	11	2	3,674	1,618	361	6	7	1	74	.275	.533	.931	671	241.9	.419	142	194.6
13	Johnny Pesky J. Pesky	.394	524	1,697	306	491	74	16	8	135	284	10	80	9	15	2,018	621	98	26	1		34	.289	.366	.760	278	39.1	.362	104	11.8
14	Willie Mays W. Mays	.391	1,065	4,074	777	1,291	204	79	250	709	505	14	435	179	53	4,629	2,403	533	1	35	69	89	.317	.590	.981	887	358.3	.424	155	317.8
15	Duke Snider D. Snider	.390	1,418	5,219	970	1,605	274	57	326	1,031	711	11	851	77	48	6,010	2,971	657	44	25	74	132	.308	.569	.959	1122	425.7	.420	147	353.8
16	Solly Hemus S. Hemus	.389	941	2,661	451	725	136	41	51	261	449	62	244	21	18	3,210	1,096	228	31	7	12	48	.272	.412	.801	469	100.6	.370	117	67.1
17	Eddie Joost E. Joost	.388	542	1,912	341	487	77	11	69	252	403	15	287	23	19	2,347	793	157	17	0	2	30	.255	.415	.803	349	74.3	.377	117	47.4
18	Gene Woodling G. Woodling	.388	1,218	3,980	606	1,139	193	41	110	603	663	17	344	21	38	4,711	1,744	344	27	24	17	81	.286	.438	.827	719	174.5	.376	129	163.3
19	Cal Abrams C. Abrams	.388	559	1,587	251	431	63	19	32	138	297	7	284	11	18	1,911	628	114	16	4	2	21	.272	.396	.784	271	49.5	.366	117	38.7
20	Larry Doby L. Doby	.387	1,236	4,330	768	1,225	194	40	215	817	725	26	833	28	12	5,119	2,144	449	13	25	19	73	.283	.495	.882	857	264.1	.396	139	246.5
21	Al Rosen A. Rosen	.386	1,009	3,667	599	1,054	163	20	192	712	580	27	376	39	25	4,309	1,833	375	9	26	9	119	.287	.500	.886	726	222.6	.399	139	208.2
22	Earl Torgeson E. Torgeson	.386	1,271	3,942	672	1,051	165	34	117	566	772	6	520	98	38	4,786	1,635	316	42	24	5	95	.267	.415	.800	701	144.9	.369	120	121.2
23	Dom DiMaggio D. DiMaggio	.385	418	1,716	325	526	84	16	25	175	212	8	183	25	15	1,951	717	125	15			37	.307	.418	.803	287	57.2	.374	109	22.6
24	Monte Irvin M. Irvin	.384	728	2,423	359	714	94	29	99	436	334	23	209	28	7	2,800	1,163	222	9	11	5	79	.295	.480	.864	454	124.8	.391	128	100.6
25	Sid Gordon S. Gordon	.383	781	2,571	369	736	124	12	119	437	400	12	197	5	5	3,021	1,241	255	26	12	2	79	.286	.483	.866	492	139.2	.394	134	126.8