Eddie Lake had the best on-base percentage in the AL in 1945, with an on-base percentage of .412.

Interpreted as:

best obp with a minimum of 3.1 PA per team game by a player in the al in 1945

	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	Eddie Lake E. Lake	.412	1945	BSA	133	473	81	132	27	1	11	51	106	1	37	9	7	586	194	39	6	9	.279	.410	.822	93	29.3	.398	140	26.2
2	Roy Cullenbine R. Cullenbine	.402	1945	TOT	154	536	83	146	28	5	18	93	113	3	36	2	0	657	238	51	5	11	.272	.444	.846	107	35.8	.404	144	31.9
3	Bobby Estalella B. Estalella	.399	1945	PHA	126	451	45	135	25	6	8	52	74	1	46	1	6	527	196	39	1	15	.299	.435	.834	83	26.3	.398	142	24.7
4	Oscar Grimes O. Grimes	.395	1945	NYY	142	480	64	127	19	7	4	45	97	6	73	7	6	595	172	30	12	10	.265	.358	.753	82	17.5	.370	125	16.3
5	Nick Etten N. Etten	.387	1945	NYY	152	565	77	161	24	4	18	111	90	4	23	2	3	663	247	46	4	21	.285	.437	.824	103	30.9	.393	140	29.6
6	Snuffy Stirnweiss S. Stirnweiss	.385	1945	NYY	152	632	107	195	32	22	10	64	78	1	62	33	17	717	301	64	6	9	.309	.476	.862	117	39	.404	147	37.6
7	Joe Kuhel J. Kuhel	.378	1945	WSH	142	533	73	152	29	13	2	75	79	1	31	10	5	615	213	44	2	7	.285	.400	.778	86	19.4	.373	131	20.9
8	George Myatt G. Myatt	.378	1945	WSH	133	490	81	145	17	7	1	39	63	2	43	30	11	575	179	25	20	3	.296	.365	.744	75	12.9	.360	122	14.2
9	Wally Moses W. Moses	.373	1945	CWS	140	569	79	168	35	15	2	50	69	2	33	11	5	641	239	52	1	4	.295	.420	.793	92	22.1	.377	131	22.3
10	Hersh Martin H. Martin	.368	1945	NYY	117	408	53	109	18	6	7	53	65	0	31	4	1	479	160	31	6	3	.267	.392	.760	65	12.7	.366	122	11.7
11	Johnny Dickshot J. Dickshot	.366	1945	CWS	130	486	74	147	19	10	4	58	48	1	41	18	3	542	198	33	7	16	.302	.407	.774	74	15.3	.368	126	15.4
12	George McQuinn G. McQuinn	.364	1945	SLA	139	483	69	134	31	3	7	61	65	1	51	1	1	561	192	41	12	8	.277	.398	.762	76	14.7	.365	119	11.8
13	Milt Byrnes M. Byrnes	.363	1945	SLA	133	442	53	110	29	4	8	59	78	1	84	1	3	540	171	41	19	6	.249	.387	.750	71	12.8	.362	117	10
14	George Case G. Case	.360	1945	WSH	123	504	72	148	19	5	1	31	49	3	27	30	16	561	180	25	5	7	.294	.357	.717	68	6.8	.346	113	8.2
15	Bob Johnson B. Johnson	.358	1945	BSA	143	529	71	148	27	7	12	74	63	1	56	5	3	593	225	46	0	13	.280	.425	.783	83	18.3	.372	123	15.2
16	Vern Stephens V. Stephens	.352	1945	SLA	149	571	90	165	27	3	24	89	55	1	70	2	1	632	270	54	5	11	.289	.473	.825	96	27	.388	134	23.6
17	Eddie Mayo E. Mayo	.347	1945	DET	134	501	71	143	24	3	10	54	47	0	29	7	7	561	203	37	13	7	.285	.405	.752	73	11.7	.358	113	8.1
18	Mike Tresh M. Tresh	.342	1945	CWS	150	458	50	114	12	0	0	47	65	0	37	6	3	532	126	12	9	9	.249	.275	.617	50	-8	.308	87	-7.9
19	Dutch Meyer D. Meyer	.342	1945	CLE	130	524	71	153	29	8	7	48	40	0	32	2	4	567	219	44	3	12	.292	.418	.760	74	12.3	.359	123	14.2
20	Pat Seerey P. Seerey	.342	1945	CLE	126	414	56	98	22	2	14	56	66	0	97	1	2	485	166	38	5	9	.237	.401	.743	62	9.5	.356	121	11.1
21	Frankie Crosetti F. Crosetti	.341	1945	NYY	130	441	57	105	12	0	4	48	59	10	65	7	1	524	129	16	14	3	.238	.293	.634	52	-4.9	.316	90	-5.9
22	Jimmy Outlaw J. Outlaw	.338	1945	DET	132	446	56	121	16	5	0	34	45	0	33	6	7	494	147	21	3	5	.271	.330	.668	52	-2	.323	91	-5.1
23	Mike Kreevich M. Kreevich	.337	1945	TOT	129	453	56	114	19	3	3	44	58	0	36	11	6	520	148	25	9	10	.252	.327	.663	54	-2.1	.324	94	-3.5
24	Frankie Hayes F. Hayes	.335	1945	TOT	151	495	51	116	17	7	9	57	71	4	66	2	1	579	174	33	9	10	.234	.352	.687	65	1.9	.333	105	3
25	Rudy York R. York	.331	1945	DET	155	595	71	157	25	5	18	87	60	0	85	6	6	655	246	48	0	23	.264	.413	.745	83	11.5	.353	110	7.4