The New York Yankees had the best on-base percentage by a team in 2010, with an on-base percentage of .350.

	TEAM	OBP	SEASON	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS
1	Yankees	.350	2010	162	.586	95	67	5,567	859	1,485	275	32	201	823	662	73	1,136	103	30	6,379	2,427	508	33	44	36	124	.267	.436	.786
2	Twins	.341	2010	162	.580	94	68	5,568	781	1,521	318	41	142	749	559	39	967	68	28	6,257	2,347	501	38	53	45	159	.273	.422	.762
3	Red Sox	.339	2010	162	.549	89	73	5,646	818	1,511	358	22	211	782	587	47	1,140	68	17	6,355	2,546	591	29	46	43	130	.268	.451	.790
4	Braves	.339	2010	162	.562	91	71	5,463	738	1,411	312	25	139	699	634	51	1,140	63	29	6,252	2,190	476	69	35	50	136	.258	.401	.740
5	Reds	.338	2010	162	.562	91	71	5,579	790	1,515	293	30	188	761	522	68	1,218	93	43	6,285	2,432	511	66	50	34	113	.272	.436	.774
6	Rangers	.338	2010	162	.556	90	72	5,635	787	1,556	268	25	162	740	511	45	986	123	48	6,298	2,360	455	53	54	37	129	.276	.419	.757
7	Rockies	.336	2010	162	.512	83	79	5,530	770	1,452	270	54	173	741	585	47	1,274	99	41	6,265	2,349	497	56	47	53	103	.263	.425	.760
8	Tigers	.335	2010	162	.500	81	81	5,643	751	1,515	308	32	152	717	546	41	1,147	69	30	6,312	2,343	492	41	41	50	118	.268	.415	.750
9	Brewers	.335	2010	162	.475	77	85	5,606	750	1,471	293	33	182	710	546	81	1,216	81	26	6,303	2,376	508	35	35	35	115	.262	.424	.759
10	Rays	.333	2010	162	.593	96	66	5,439	802	1,343	295	37	160	769	672	57	1,292	172	47	6,264	2,192	492	39	57	30	92	.247	.403	.736
11	Phillies	.332	2010	162	.599	97	65	5,581	772	1,451	290	34	166	736	560	63	1,064	108	21	6,291	2,307	490	44	43	69	120	.260	.413	.745
12	White Sox	.332	2010	162	.543	88	74	5,484	752	1,467	263	21	177	710	467	79	922	160	74	6,118	2,303	461	50	38	23	148	.268	.420	.752
13	Cardinals	.332	2010	162	.531	86	76	5,542	736	1,456	285	18	150	689	541	50	1,027	79	41	6,239	2,227	453	66	40	78	124	.263	.402	.733
14	Royals	.331	2010	162	.414	67	95	5,604	676	1,534	279	31	121	640	471	35	905	115	50	6,208	2,238	431	45	53	25	152	.274	.399	.730
15	Diamondbacks	.325	2010	162	.401	65	97	5,473	713	1,366	301	34	180	691	589	39	1,529	86	41	6,183	2,275	515	41	41	45	113	.250	.416	.740
16	Athletics	.324	2010	162	.500	81	81	5,448	663	1,396	276	30	109	619	527	47	1,061	156	38	6,116	2,059	415	43	51	16	129	.256	.378	.702
17	Indians	.322	2010	162	.426	69	93	5,487	646	1,362	290	20	128	601	545	64	1,184	91	33	6,165	2,076	438	36	33	34	118	.248	.378	.700
18	Dodgers	.322	2010	162	.494	80	82	5,426	667	1,368	270	29	120	621	533	46	1,184	92	50	6,140	2,056	419	85	50	57	123	.252	.379	.700
19	Giants	.321	2010	162	.568	92	70	5,488	697	1,411	284	30	162	660	487	50	1,099	55	32	6,142	2,241	476	76	41	53	158	.257	.408	.729
20	Marlins	.321	2010	162	.494	80	82	5,531	719	1,403	294	37	152	686	514	55	1,375	92	26	6,194	2,227	483	51	43	42	107	.254	.403	.724
21	Cubs	.320	2010	162	.463	75	87	5,512	685	1,414	298	27	149	658	479	50	1,236	55	31	6,139	2,213	474	60	38	32	124	.257	.401	.721
22	Nationals	.318	2010	162	.426	69	93	5,418	655	1,355	250	31	149	634	503	60	1,220	110	41	6,099	2,114	430	71	47	36	125	.250	.390	.708
23	Padres	.317	2010	162	.556	90	72	5,434	665	1,338	236	24	132	630	538	50	1,183	124	50	6,147	2,018	392	79	46	67	106	.246	.371	.689
24	Orioles	.316	2010	162	.407	66	96	5,554	613	1,440	264	21	133	577	424	54	1,056	76	34	6,108	2,145	418	31	45	32	154	.259	.386	.702
25	Mets	.314	2010	162	.488	79	83	5,465	656	1,361	266	40	128	625	502	46	1,095	130	44	6,144	2,091	434	74	57	53	101	.249	.383	.697