Lou Gehrig had the best on-base percentage in the AL in 1937, with an on-base percentage of .473.

Interpreted as:

best obp with a minimum of 3.1 PA per team game by a player in the al in 1937

	NAME	OBP	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Lou Gehrig L. Gehrig	.473	1937	NYY	157	569	138	200	37	9	37	158	127	4	49	4	3	700	366	83	0	.351	.643	1.116	173	85.5	.494	176	76.5
2	Charlie Gehringer C. Gehringer	.458	1937	DET	144	564	133	209	40	1	14	96	90	1	25	11	4	660	293	55	5	.371	.520	.978	139	56.2	.448	145	42.8
3	Hank Greenberg H. Greenberg	.436	1937	DET	154	594	137	200	49	14	40	184	102	3	101	8	3	701	397	103	2	.337	.668	1.105	167	79.5	.483	164	65.3
4	Bob Johnson B. Johnson	.425	1937	PHA	138	477	91	146	32	6	25	108	98	1	65	9	7	576	265	63	0	.306	.556	.981	118	45.5	.441	141	33.8
5	Bill Dickey B. Dickey	.417	1937	NYY	140	530	87	176	35	2	29	133	73	4	22	3	2	608	302	66	1	.332	.570	.987	125	48.8	.442	147	41.1
6	Harlond Clift H. Clift	.413	1937	SLA	155	571	103	175	36	7	29	118	98	6	80	8	5	679	312	72	4	.306	.546	.960	134	48.8	.432	132	31.6
7	Zeke Bonura Z. Bonura	.412	1937	CWS	116	447	79	154	41	2	19	100	49	2	24	5	1	502	256	62	4	.345	.573	.984	103	39.7	.441	140	28.9
8	Joe DiMaggio J. DiMaggio	.412	1937	NYY	151	621	151	215	35	15	46	167	64	5	37	3	0	692	418	96	2	.346	.673	1.085	160	73.6	.474	165	64.8
9	Buddy Myer B. Myer	.407	1937	WSH	125	430	54	126	16	10	1	65	78	5	41	2	6	519	165	27	6	.293	.384	.791	79	14	.377	110	7.3
10	Luke Appling L. Appling	.407	1937	CWS	154	574	98	182	42	8	4	77	86	1	28	18	10	665	252	54	4	.317	.439	.846	110	26.8	.393	113	12.5
11	John Stone J. Stone	.403	1937	WSH	139	542	84	179	33	15	6	88	66	0	36	6	4	609	260	54	1	.330	.480	.883	106	29.7	.403	125	21.9
12	Joe Cronin J. Cronin	.402	1937	BSA	148	570	102	175	40	4	18	110	84	6	73	5	3	671	277	62	11	.307	.486	.887	118	34.1	.406	119	18
13	Cecil Travis C. Travis	.395	1937	WSH	135	526	72	181	27	7	3	66	39	5	34	3	2	578	231	37	8	.344	.439	.834	92	19.8	.385	115	12.4
14	Bruce Campbell B. Campbell	.392	1937	CLE	134	448	82	135	42	11	4	61	67	0	49	4	5	519	211	57	4	.301	.471	.863	87	21.6	.395	116	12.4
15	Jimmie Foxx J. Foxx	.392	1937	BSA	150	569	111	162	24	6	36	127	99	1	96	10	8	673	306	66	4	.285	.538	.929	125	40.3	.417	125	24.1
16	Beau Bell B. Bell	.391	1937	SLA	156	642	82	218	51	8	14	117	53	1	54	2	2	699	327	73	3	.340	.509	.900	124	36.3	.407	118	18.6
17	Sam West S. West	.390	1937	SLA	122	457	68	150	37	4	7	58	46	0	28	1	1	506	216	48	3	.328	.473	.862	84	20.9	.394	111	8.1
18	Ben Chapman B. Chapman	.389	1937	TOT	148	553	99	164	30	12	7	69	83	1	42	35	12	643	239	49	6	.297	.432	.822	100	19.6	.381	106	5.9
19	Earl Averill E. Averill	.387	1937	CLE	156	609	121	182	33	11	21	92	88	0	65	5	4	702	300	65	5	.299	.493	.880	120	32.1	.400	119	19.6
20	Billy Werber B. Werber	.386	1937	PHA	128	493	85	144	31	4	7	70	74	1	39	35	13	576	204	42	8	.292	.414	.799	86	14	.373	103	2.3
21	Pinky Higgins P. Higgins	.385	1937	BSA	153	570	88	172	33	5	9	106	76	1	51	2	6	654	242	47	7	.302	.425	.809	99	17.3	.376	102	1.6
22	Rip Radcliff R. Radcliff	.383	1937	CWS	144	584	105	190	38	10	4	79	53	2	25	6	1	643	260	52	4	.325	.445	.829	100	19.6	.381	106	5.8
23	Dixie Walker D. Walker	.383	1937	CWS	154	593	105	179	28	16	9	95	78	0	26	1	2	688	266	53	17	.302	.449	.832	108	21.6	.382	107	6.8
24	Gee Walker G. Walker	.380	1937	DET	151	635	105	213	42	4	18	113	41	5	74	23	7	683	317	64	2	.335	.499	.880	116	30.6	.399	117	16.8
25	Lyn Lary L. Lary	.378	1937	CLE	156	644	110	187	46	7	8	77	88	3	64	18	8	741	271	61	6	.290	.421	.799	110	16.7	.371	103	3.5