Mickey Mantle has the best on-base percentage by a center fielder in a season, with an on-base percentage of .512 in 1957.

Interpreted as:

highest obp with a minimum of 3.1 PA per team game by a cf in a season

	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	Mickey Mantle M. Mantle	.512	1957	NYY	144	474	121	173	28	6	34	94	146	0	75	16	3	623	315	68	0	3	23	5	.365	.665	1.177	157	87.1	.498	217	86
2	Ty Cobb T. Cobb	.486	1915	DET	156	563	144	208	31	13	3	99	118	10	43	96	38	700	274	47	9				.369	.487	.973	143	71	.467	184	64.2
3	Tristram Speaker T. Speaker	.483	1920	CLE	150	552	137	214	50	11	8	107	97	5	13	10	13	674	310	69	20				.388	.562	1.045	152	74.9	.483	170	62
4	Tristram Speaker T. Speaker	.479	1925	CLE	117	429	79	167	35	5	12	87	70	4	12	5	2	518	248	52	15				.389	.578	1.057	122	54.3	.479	167	49
5	Tristram Speaker T. Speaker	.474	1922	CLE	131	426	85	161	48	8	11	71	77	1	11	8	3	516	258	67	12				.378	.606	1.080	122	57.5	.486	178	53.7
6	Tristram Speaker T. Speaker	.470	1916	CLE	151	546	102	211	41	8	2	79	82	4	20	35	27	647	274	51	15				.386	.502	.972	127	64.8	.464	182	55.9
7	Tristram Speaker T. Speaker	.469	1923	CLE	150	574	133	218	59	11	17	130	93	4	15	8	9	693	350	87	22				.380	.610	1.079	164	78.4	.489	178	71.5
8	Ty Cobb T. Cobb	.468	1925	DET	121	415	97	157	31	12	12	102	65	5	12	13	9	490	248	55	5				.378	.598	1.066	115	51.1	.478	166	46
9	Ty Cobb T. Cobb	.467	1913	DET	122	428	70	167	18	16	4	67	58	4	31	51		501	229	38	11				.390	.535	1.002	107	52.2	.473	186	48.7
10	Ty Cobb T. Cobb	.467	1911	DET	146	591	147	248	47	24	8	127	44	8	43	83		654	367	79	11				.420	.621	1.088	160	82.2	.506	189	74
11	Tristram Speaker T. Speaker	.464	1912	BSA	153	580	136	222	53	12	10	90	82	6	36	52	28	675	329	75	7				.383	.567	1.031	154	73.6	.483	190	74.1
12	Mickey Mantle M. Mantle	.464	1956	NYY	150	533	132	188	22	5	52	130	112	2	99	10	1	652	376	79	1	4	6	4	.353	.705	1.169	164	88.9	.498	202	84.6
13	Ty Cobb T. Cobb	.462	1922	DET	137	526	99	211	42	16	4	99	55	4	24	9	13	612	297	62	27				.401	.565	1.026	136	58.8	.467	167	54.3
14	Mike Trout M. Trout	.460	2018	LAA	140	471	101	147	24	4	39	79	122	10	124	24	2	607	296	67	0	4	25	5	.312	.628	1.088	136	65.3	.447	189	64.4
15	Aaron Judge A. Judge	.458	2024	NYY	158	559	122	180	36	1	58	144	133	9	171	10	0	703	392	95	0	2	20	22	.322	.701	1.159	176	93.7	.476	219	95.5
16	Ty Cobb T. Cobb	.456	1910	DET	140	506	106	194	35	13	8	91	64	4	46	65		590	279	56	16				.383	.551	1.008	126	64.9	.481	206	63.4
17	Ty Cobb T. Cobb	.456	1912	DET	140	553	120	226	30	23	7	83	43	5	30	61	34	609	323	60	8				.409	.584	1.040	140	67.5	.485	188	65
18	Hack Wilson H. Wilson	.454	1930	CHC	155	585	146	208	35	6	56	191	105	1	84	3		709	423	97	18				.356	.723	1.177	189	89	.497	171	78.9
19	Roy Thomas R. Thomas	.453	1903	PHN	130	477	88	156	11	2	1	27	107	3	46	17		607	174	14	20				.327	.365	.818	110	38.2	.403	137	29.8
20	Ty Cobb T. Cobb	.452	1921	DET	128	507	124	197	37	16	12	101	56	3	19	22	15	581	302	65	15				.389	.596	1.048	131	58.2	.471	164	51.2
21	Ty Cobb T. Cobb	.452	1916	DET	145	542	113	201	31	10	5	68	78	2	39	68	24	636	267	46	14				.371	.493	.944	120	58.5	.452	176	50.9
22	Richie Ashburn R. Ashburn	.449	1955	PHI	140	533	91	180	32	9	3	42	105	3	36	12	10	644	239	44	2	1	5	3	.338	.448	.897	117	41.6	.409	147	37.7
23	Mickey Mantle M. Mantle	.448	1961	NYY	153	514	131	163	16	6	54	128	126	0	112	12	1	646	353	76	1	5	9	2	.317	.687	1.135	156	79.6	.478	197	78.8
24	Joe DiMaggio J. DiMaggio	.448	1939	NYY	120	462	108	176	32	6	30	126	52	4	20	3	0	524	310	68	6			11	.381	.671	1.119	129	64	.495	180	58.5
25	Benny Kauff B. Kauff	.446	1915	BKF	136	483	92	165	23	11	12	83	85	6	50	55		581	246	46	7				.342	.509	.955	114	54.5	.456	175	48.6