highest single season obp by a rookie since 1900, minimum 250 pa

Since 1900, Joe Jackson has the highest on-base percentage by a rookie with 250+ plate appearances, with an on-base percentage of .468 in 1911.

	NAME	OBP	PA	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Joe Jackson J. Jackson	.468	641	1911	CLE	147	571	126	233	45	19	7	83	56	8	43	41		337	71	6				.408	.590	1.058	151	75.1	.494	184	68.6
2	Bernie Carbo B. Carbo	.454	467	1970	CIN	125	365	54	113	19	3	21	63	94	4	77	10	4	201	43	2	2	9	6	.310	.551	1.004	97	44	.441	170	40.8
3	Harry Rice H. Rice	.450	420	1925	SLA	103	354	87	127	25	8	11	47	54	5	15	8	7	201	44	7				.359	.568	1.018	92	37.1	.459	150	29.4
4	Benny Kauff B. Kauff	.447	667	1914	IND	154	571	120	211	44	13	8	95	72	8	55	75		305	65	16				.370	.534	.981	136	66	.465	167	52.6
5	Charlie Keller C. Keller	.447	490	1939	NYY	111	398	87	133	21	6	11	83	81	0	49	6	3	199	38	11			4	.334	.500	.947	97	36.5	.436	146	31.4
6	Fred Snodgrass F. Snodgrass	.440	493	1910	NYG	123	396	69	127	22	8	2	44	71	13	52	33		171	32	13				.321	.432	.871	87	36.2	.427	152	29.6
7	Fred Haney F. Haney	.439	258	1922	DET	81	213	41	75	7	4	0	25	32	1	14	3	8	90	11	12				.352	.423	.862	45	12.4	.408	131	10.5
8	Ted Williams T. Williams	.436	677	1939	BSA	149	565	131	185	44	11	31	145	107	2	64	2	1	344	86	3			10	.327	.609	1.045	150	66.1	.464	156	53.1
9	Showboat Fisher S. Fisher	.432	286	1930	SLN	92	254	49	95	18	6	8	61	25	1	21	4		149	32	6				.374	.587	1.019	63	23.2	.447	141	18.3
10	Carl Taylor C. Taylor	.432	261	1969	PIT	104	221	30	77	10	1	4	33	31	3	36	0	1	101	15	4	2	0	6	.348	.457	.889	46	18	.406	156	16.6
11	Cuckoo Christensen C. Christensen	.426	385	1926	CIN	114	329	41	115	15	7	0	41	40	4	18	8		144	22	12				.350	.438	.864	65	19	.408	141	19.5
12	Minnie Minoso M. Minoso	.422	622	1951	TOT	146	530	112	173	34	14	10	76	72	16	42	31	10	265	58	4			12	.326	.500	.922	115	41.8	.423	150	38.9
13	Aaron Judge A. Judge	.422	678	2017	NYY	155	542	128	154	24	3	52	114	127	5	208	9	4	340	79	0	4	11	15	.284	.627	1.049	145	62.5	.430	174	61.5
14	Esteban German E. German	.422	331	2006	KCR	106	279	44	91	18	5	3	34	40	6	49	7	3	128	26	6	0	0	8	.326	.459	.880	58	16.4	.390	136	15.2
15	Mike Fiore M. Fiore	.420	427	1969	KCR	107	339	53	93	14	1	12	35	84	2	63	4	4	145	27	1	1	4	9	.274	.428	.848	70	24.4	.390	142	20.8
16	Bill Salkeld B. Salkeld	.420	317	1945	PIT	95	267	45	83	16	1	15	52	50	0	16	2		146	32	0			8	.311	.547	.966	62	27.9	.451	160	22.9
17	Ben Paschal B. Paschal	.417	275	1925	NYY	89	247	49	89	16	5	12	55	22	2	29	14	9	151	33	4				.360	.611	1.028	60	23.5	.456	155	21.4
18	Ira Flagstead I. Flagstead	.416	342	1919	DET	97	287	43	95	22	3	5	48	35	7	39	6		138	30	13				.331	.481	.897	60	24.7	.425	150	20.2
19	Lu Blue L. Blue	.416	709	1921	DET	153	585	103	180	33	11	5	75	103	5	47	13	17	250	49	16				.308	.427	.843	116	27.7	.396	120	19.2
20	George Watkins G. Watkins	.415	424	1930	SLN	119	391	85	146	32	7	17	87	24	4	49	5		243	56	5				.373	.621	1.037	95	35.2	.449	142	28
21	Gus Mancuso G. Mancuso	.415	254	1930	SLN	76	227	39	83	17	2	7	59	18	1	16	1		125	26	8				.366	.551	.965	52	16	.426	129	11.6
22	Billy Goodman B. Goodman	.414	527	1948	BSA	127	445	65	138	27	2	1	66	74	5	44	5	3	172	30	3			18	.310	.387	.801	80	17.9	.385	111	7.8
23	Ferris Fain F. Fain	.414	567	1947	PHA	136	461	70	134	28	6	7	71	95	2	34	4	5	195	41	9			15	.291	.423	.837	90	26	.396	137	24.4
24	William DeLancey W. DeLancey	.414	295	1934	SLN	93	253	41	80	18	3	13	40	41	1	37	1		143	34	0			5	.316	.565	.979	60	23.1	.438	156	21.4
25	Paul Waner P. Waner	.413	618	1926	PIT	144	536	101	180	35	22	8	79	66	4	19	11		283	65	12				.336	.528	.941	116	41.4	.430	148	36.3