Joe Mauer had the best on-base percentage in 2012, with an on-base percentage of .416.

Interpreted as:

Who led MLB in obp with a minimum of 3.1 PA per team game in 2012?

	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	Joe Mauer J. Mauer	.416	2012	MIN	147	545	81	174	31	4	10	85	90	2	88	8	4	641	243	45	1	3	10	23	.319	.446	.861	104	31.2	.376	138	28.6
2	Prince Fielder P. Fielder	.412	2012	DET	162	581	83	182	33	1	30	108	85	17	84	1	0	690	307	64	0	7	18	19	.313	.528	.940	125	46.1	.398	153	42.6
3	Buster Posey B. Posey	.408	2012	SFG	148	530	78	178	39	1	24	103	69	2	96	1	1	610	291	64	0	9	7	19	.336	.549	.957	114	44.7	.406	164	46.5
4	Andrew McCutchen A. McCutchen	.400	2012	PIT	157	593	107	194	29	6	31	96	70	5	132	20	12	673	328	66	0	5	13	9	.327	.553	.953	124	47.5	.403	158	46.4
5	Mike Trout M. Trout	.399	2012	LAA	139	559	129	182	27	8	30	83	67	6	139	49	5	639	315	65	0	7	4	7	.326	.564	.963	121	48.2	.409	167	50
6	Miguel Cabrera M. Cabrera	.393	2012	DET	161	622	109	205	40	0	44	139	66	3	98	4	1	697	377	84	0	6	17	28	.330	.606	.999	137	57.3	.417	166	53.7
7	Ryan Braun R. Braun	.391	2012	MIL	154	598	108	191	36	3	41	112	63	11	128	30	7	677	356	80	0	5	15	12	.319	.595	.987	131	53.4	.413	159	47.7
8	David Wright D. Wright	.391	2012	NYM	156	581	91	178	41	2	21	93	81	3	112	15	10	670	286	64	0	5	16	15	.306	.492	.883	109	32.7	.376	141	33.1
9	Miguel Montero M. Montero	.391	2012	ARI	141	486	65	139	25	2	15	88	73	12	130	0	0	573	213	42	0	2	6	15	.286	.438	.829	88	22.3	.364	125	16.8
10	Dexter Fowler D. Fowler	.389	2012	COL	143	454	72	136	18	11	13	53	68	0	128	12	5	530	215	42	6	2	1	5	.300	.474	.863	86	25.6	.375	120	12.7
11	Edwin Encarnacion E. Encarnacion	.384	2012	TOR	151	542	93	152	24	0	42	110	84	11	94	13	3	644	302	66	0	7	12	6	.280	.557	.941	115	41.9	.396	150	37.9
12	David Murphy D. Murphy	.380	2012	TEX	147	457	65	139	29	3	15	61	54	4	74	10	5	519	219	47	0	4	7	7	.304	.479	.859	82	22.4	.369	129	17.3
13	Matt Holliday M. Holliday	.379	2012	STL	157	599	95	177	36	2	27	102	75	9	132	4	4	688	298	65	0	5	3	16	.295	.497	.877	114	35	.378	140	33.1
14	Robinson Cano R. Cano	.379	2012	NYY	161	627	105	196	48	1	33	94	61	7	96	3	2	697	345	82	0	2	10	22	.313	.550	.929	124	44.4	.394	149	40
15	Austin Jackson A. Jackson	.377	2012	DET	137	543	103	163	29	10	16	66	67	2	134	12	9	617	260	55	2	3	0	9	.300	.479	.856	98	28	.371	134	24.8
16	Ben Zobrist B. Zobrist	.377	2012	TBR	157	560	88	151	39	7	20	74	97	3	103	14	9	668	264	66	2	6	7	13	.270	.471	.848	103	27	.365	137	28.9
17	Chase Headley C. Headley	.376	2012	SDP	161	604	95	173	31	2	31	115	86	4	157	17	6	699	301	64	0	5	2	7	.286	.498	.875	115	35.1	.378	146	38
18	Yadier Molina Y. Molina	.373	2012	STL	138	505	65	159	28	0	22	76	45	5	55	12	3	563	253	50	3	5	4	10	.315	.501	.874	92	27.3	.375	138	25.7
19	Shin-Soo Choo S. Choo	.373	2012	CLE	155	598	88	169	43	2	16	67	73	14	150	21	7	686	264	61	0	1	0	10	.283	.441	.815	102	24.1	.359	131	24.5
20	A.J. Ellis	.373	2012	LAD	133	423	44	114	20	1	13	52	65	7	107	0	0	505	175	34	6	4	11	17	.270	.414	.786	68	10.6	.341	117	10.4
21	Billy Butler B. Butler	.373	2012	KCR	161	614	72	192	32	1	29	107	54	7	111	2	1	679	313	62	0	4	9	20	.313	.510	.882	111	33.7	.377	139	31
22	David Freese D. Freese	.372	2012	STL	144	501	70	147	25	1	20	79	57	7	122	3	3	567	234	46	0	2	2	19	.293	.467	.839	88	23	.365	132	21.4
23	Carlos Gonzalez C. Gonzalez	.371	2012	COL	135	518	89	157	31	5	22	85	56	2	115	20	5	579	264	58	0	3	11	11	.303	.510	.881	93	27.2	.374	119	13.1
24	Paul Konerko P. Konerko	.371	2012	CWS	144	533	66	159	22	0	26	75	56	7	83	0	0	598	259	48	0	2	4	16	.298	.486	.857	95	26.8	.371	132	22.3
25	Alex Gordon A. Gordon	.368	2012	KCR	161	642	93	189	51	5	14	72	73	3	140	10	5	721	292	70	0	3	3	14	.294	.455	.822	107	24.5	.357	126	21.6