Bob Johnson had the best on-base percentage in the AL in 1944, with an on-base percentage of .431.

Interpreted as:

best obp with a minimum of 3.1 PA per team game by a player in the al in 1944

	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	Bob Johnson B. Johnson	.431	1944	BSA	144	525	106	170	40	8	17	106	95	4	67	2	7	626	277	65	2	14	.324	.528	.959	122	54.5	.445	169	49.5
2	Lou Boudreau L. Boudreau	.406	1944	CLE	150	584	91	191	45	5	3	67	73	5	39	11	3	681	255	53	19	10	.327	.437	.843	110	36.1	.398	147	36.6
3	Bobby Doerr B. Doerr	.399	1944	BSA	125	468	95	152	30	10	15	81	58	0	31	5	2	536	247	55	10	8	.325	.528	.927	98	40.2	.429	159	36
4	Nick Etten N. Etten	.399	1944	NYY	154	573	88	168	25	4	22	91	97	4	29	4	2	680	267	51	6	14	.293	.466	.865	114	40.5	.407	147	36.6
5	Milt Byrnes M. Byrnes	.396	1944	SLA	128	407	63	120	20	4	4	45	68	0	50	1	7	487	160	28	12	8	.295	.393	.789	71	18.5	.378	126	14.1
6	Pinky Higgins P. Higgins	.392	1944	DET	148	543	79	161	32	4	7	76	81	4	34	4	4	640	222	43	12	17	.297	.409	.801	95	26	.381	126	18.9
7	Stan Spence S. Spence	.391	1944	WSH	153	592	83	187	31	8	18	100	69	4	28	3	7	669	288	57	4	5	.316	.486	.877	113	40.9	.410	152	40
8	Snuffy Stirnweiss S. Stirnweiss	.389	1944	NYY	154	643	125	205	35	16	8	43	73	1	87	55	11	723	296	59	6	6	.319	.460	.849	116	37.7	.397	141	33.6
9	Dick Siebert D. Siebert	.387	1944	PHA	132	468	52	143	27	5	6	52	62	0	17	2	0	535	198	38	5	5	.306	.423	.810	80	22.4	.383	131	18.8
10	Roy Cullenbine R. Cullenbine	.380	1944	CLE	154	571	98	162	34	5	16	80	87	2	49	4	4	666	254	55	6	11	.284	.445	.825	103	30.7	.389	141	31.2
11	Bobby Estalella B. Estalella	.374	1944	PHA	140	506	54	151	17	9	7	60	59	2	60	3	3	574	207	33	7	13	.298	.409	.783	81	18.9	.371	123	15
12	Thurman Tucker T. Tucker	.368	1944	CWS	124	446	59	128	15	6	2	46	57	0	40	13	12	504	161	23	1	4	.287	.361	.729	63	8.8	.350	112	7
13	Vern Stephens V. Stephens	.365	1944	SLA	145	559	91	164	32	1	20	109	62	1	54	2	2	628	258	53	6	3	.293	.462	.826	96	28.2	.387	131	22.5
14	Joe Kuhel J. Kuhel	.364	1944	WSH	139	518	90	144	26	7	4	51	68	2	40	11	6	597	196	37	9	12	.278	.378	.742	77	12.6	.354	117	11.7
15	George Myatt G. Myatt	.357	1944	WSH	140	538	86	153	19	6	0	40	54	7	44	26	10	620	184	25	21	10	.284	.342	.699	72	5	.337	106	4.1
16	George McQuinn G. McQuinn	.357	1944	SLA	146	516	83	129	26	3	11	72	85	1	74	4	3	623	194	40	21	1	.250	.376	.733	79	12	.352	109	6.4
17	Ken Keltner K. Keltner	.355	1944	CLE	149	573	74	169	41	9	13	91	53	0	29	4	3	632	267	63	6	23	.295	.466	.821	94	25.9	.382	137	26.4
18	Pete Fox P. Fox	.354	1944	BSA	121	496	70	156	37	6	1	64	27	3	34	10	5	535	208	44	9	8	.315	.419	.773	72	14.2	.362	116	10
19	Rudy York R. York	.353	1944	DET	151	583	76	161	27	7	18	98	68	1	73	5	3	652	256	52	0	18	.276	.439	.792	92	21.9	.372	120	14.7
20	Johnny Lindell J. Lindell	.351	1944	NYY	149	594	91	178	33	16	18	103	44	3	56	5	4	646	297	67	5	16	.300	.500	.851	102	31.7	.393	138	28
21	Wally Moses W. Moses	.345	1944	CWS	136	535	82	150	26	9	3	34	52	1	22	21	7	588	203	38	0	1	.280	.379	.725	71	7.6	.343	108	5.5
22	Oris Hockett O. Hockett	.339	1944	CLE	124	457	47	132	29	5	1	50	35	0	27	8	9	497	174	35	5	7	.289	.381	.720	59	5.2	.340	110	5.6
23	Doc Cramer D. Cramer	.337	1944	DET	143	578	69	169	20	9	2	42	37	2	21	6	5	626	213	31	9	7	.292	.369	.706	71	3.7	.334	95	-3.3
24	Ralph Hodgin R. Hodgin	.333	1944	CWS	121	465	56	137	25	7	1	51	21	6	14	3	1	497	179	33	5	11	.295	.385	.718	58	4.4	.338	105	2.7
25	Mark Christman M. Christman	.332	1944	SLA	148	547	56	148	25	1	6	83	47	3	37	5	2	607	193	32	10	18	.271	.353	.684	66	0.6	.327	93	-4.9