Ted Williams has the best on-base percentage by a Red Sox rookie, with an on-base percentage of .436 in 1939.

Interpreted as:

most obp with a minimum of 1.55 PA per team game by a rookie in redsox history

	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	Ted Williams T. Williams	.436	1939	BSA	149	565	131	185	44	11	31	145	107	2	64	2	1	677	344	86	3			10	.327	.609	1.045	150	66.1	.464	156	53.1
2	Billy Goodman B. Goodman	.414	1948	BSA	127	445	65	138	27	2	1	66	74	5	44	5	3	527	172	30	3			18	.310	.387	.801	80	17.9	.385	111	7.8
3	Patsy Dougherty P. Dougherty	.407	1902	BSA	108	438	77	150	12	6	0	34	42	6	41	20		489	174	18	3				.342	.397	.805	82	24.2	.390	122	15
4	Wade Boggs W. Boggs	.406	1982	BOS	104	338	51	118	14	1	5	44	35	0	21	1	0	381	149	20	4	4	4	9	.349	.441	.847	60	17.5	.378	129	13.1
5	Ike Boone I. Boone	.404	1924	BSA	128	487	72	164	31	4	13	98	54	1	32	2	2	545	242	48	3				.337	.497	.901	96	29.4	.415	129	21.6
6	Fred Lynn F. Lynn	.401	1975	BOS	145	528	103	175	47	7	21	105	62	3	90	10	5	605	299	75	6	6	10	11	.331	.566	.967	114	48.1	.427	161	41.5
7	Mike Greenwell M. Greenwell	.386	1987	BOS	125	412	71	135	31	6	19	89	35	6	40	5	4	456	235	56	0	3	1	7	.328	.570	.956	87	31.2	.408	148	28.1
8	Tex Vache T. Vache	.382	1925	BSA	110	252	41	79	15	7	3	48	21	7	33	2	2	283	117	25	3				.313	.464	.846	45	8	.388	112	4.7
9	Jody Reed J. Reed	.380	1988	BOS	109	338	60	99	23	1	1	28	45	4	21	1	3	400	127	25	11	2	1	5	.293	.376	.756	54	10.5	.347	114	6.5
10	Dustin Pedroia D. Pedroia	.380	2007	BOS	139	520	86	165	39	1	8	50	47	7	42	7	1	581	230	48	5	2	1	8	.317	.442	.823	88	16	.364	118	12.8
11	Walt Dropo W. Dropo	.378	1950	BSA	136	559	101	180	28	8	34	144	45	5	75	0	0	609	326	70	0			16	.322	.583	.961	115	39.3	.425	132	26.7
12	Johnny Pesky J. Pesky	.375	1942	BSA	147	620	105	205	29	9	2	51	42	2	36	12	7	686	258	40	22			8	.331	.416	.791	98	24.9	.374	118	15
13	Carlton Fisk C. Fisk	.370	1972	BOS	131	457	74	134	28	9	22	61	52	4	83	5	2	514	246	59	1	0	6	11	.293	.538	.909	88	37.6	.407	165	33.4
14	Roy Partee R. Partee	.368	1943	BSA	96	299	30	84	14	2	0	31	39	2	33	0	0	345	102	16	5			9	.281	.341	.709	41	5.6	.346	109	3.3
15	Freddy Parent F. Parent	.367	1901	BSA	138	517	87	158	23	9	4	59	41	9	18	16		588	211	36	21				.306	.408	.775	95	18.5	.367	113	11.2
16	Dom DiMaggio D. DiMaggio	.367	1940	BSA	108	418	81	126	32	6	8	46	41	2	46	7	6	466	194	46	5			5	.301	.464	.831	72	15.8	.377	110	6.3
17	Triston Casas T. Casas	.367	2023	BOS	132	429	66	113	21	2	24	65	70	1	126	0	0	502	210	47	0	2	2	7	.263	.490	.856	82	20.4	.367	129	17.7
18	Roy Carlyle R. Carlyle	.365	1925	BSA	93	276	36	90	20	3	7	49	16	1	28	1	1	300	137	30	7				.326	.496	.862	48	8.7	.389	112	5.2
19	Joe Foy J. Foy	.364	1966	BOS	151	554	97	145	23	8	15	63	91	2	80	2	5	658	229	46	5	6	2	14	.262	.413	.778	91	21.7	.347	119	13.5
20	Buster Mills B. Mills	.361	1937	BSA	123	505	85	149	25	8	7	58	46	6	41	11	8	566	211	40	9				.295	.418	.779	79	7.5	.360	92	-6.1
21	Brian Daubach B. Daubach	.360	1999	BOS	110	381	61	112	33	3	21	73	36	3	92	0	1	420	214	57	0	0	0	5	.294	.562	.921	74	18.9	.393	130	16.9
22	Marty Barrett M. Barrett	.358	1984	BOS	139	475	56	144	23	3	3	45	42	1	25	5	3	526	182	29	4	4	2	9	.303	.383	.741	66	7.4	.336	104	2.2
23	Trot Nixon T. Nixon	.357	1999	BOS	124	381	67	103	22	5	15	52	53	3	75	3	1	447	180	42	2	8	1	7	.270	.472	.830	65	7.2	.359	108	5.1
24	Sam Mele S. Mele	.356	1947	BSA	123	453	71	137	14	8	12	73	37	1	35	0	3	497	203	34	6			11	.302	.448	.805	70	13.7	.372	117	10
25	Troy O'Leary T. O'Leary	.355	1995	BOS	112	399	60	123	31	6	10	49	29	1	64	5	3	434	196	47	3	2	4	8	.308	.491	.846	66	11.8	.366	114	7.7