Since 1970, the Boston Red Sox have the best on-base percentage by a team, with an on-base percentage of .340.

	TEAM	OBP	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	Red Sox	.340	8,731	.539	4,702	4,028	301,748	43,091	81,716	16,739	1,633	9,228	40,885	30,613	2,653	54,218	4,080	1,960	339,686	129,405	27,600	1,978	2,694	2,324	7,392	.271	.429	.769
2	Yankees	.338	8,723	.564	4,916	3,803	298,477	42,522	79,098	14,176	1,371	9,869	40,433	31,528	2,619	52,929	5,251	2,157	337,150	125,623	25,416	1,878	2,648	2,120	7,189	.265	.421	.759
3	Rockies	.335	5,074	.459	2,330	2,744	174,253	25,084	47,067	9,296	1,310	5,731	23,853	16,002	1,581	37,782	3,059	1,368	195,198	76,176	16,337	2,005	1,357	1,209	3,866	.270	.437	.772
4	Guardians	.330	8,714	.499	4,345	4,367	297,783	39,966	78,149	14,459	1,519	8,439	37,780	28,929	2,536	53,051	5,699	2,677	334,376	120,963	24,417	2,468	2,660	1,920	6,923	.262	.406	.736
5	Cardinals	.330	8,732	.526	4,593	4,131	297,251	38,894	77,844	14,347	1,930	7,278	36,645	28,787	2,473	54,429	6,693	2,794	334,531	117,885	23,555	3,519	2,501	2,907	6,636	.262	.397	.726
6	Twins	.329	8,729	.490	4,277	4,449	299,538	39,667	79,207	14,837	1,906	7,745	37,410	27,713	2,583	53,664	4,752	2,392	334,554	121,091	24,488	2,194	2,526	1,991	7,200	.264	.404	.734
7	Rangers	.328	8,729	.486	4,237	4,487	298,863	40,504	78,206	14,297	1,572	9,041	38,322	28,296	2,446	56,348	5,438	2,539	334,506	122,770	24,910	2,389	2,512	1,909	6,665	.262	.411	.739
8	Orioles	.327	8,716	.501	4,362	4,350	297,717	39,423	76,927	14,085	1,263	9,416	37,443	28,983	2,485	54,513	4,617	2,120	333,742	121,786	24,764	2,122	2,435	1,901	7,013	.258	.409	.736
9	Reds	.327	8,739	.508	4,432	4,301	296,609	38,976	75,923	14,391	1,651	8,686	36,751	29,717	2,576	59,717	6,917	2,651	334,727	119,674	24,728	3,459	2,366	2,737	6,228	.256	.403	.730
10	Dodgers	.326	8,737	.550	4,805	3,929	296,959	38,399	76,586	13,304	1,577	8,297	36,313	29,013	2,316	55,599	6,090	2,569	334,543	117,935	23,178	3,865	2,390	2,879	6,333	.258	.397	.723
11	Blue Jays	.326	7,605	.498	3,787	3,815	260,549	35,146	67,750	13,537	1,492	8,262	33,336	24,167	2,426	49,006	4,576	1,963	290,772	109,057	23,291	1,503	2,127	1,402	5,933	.260	.419	.745
12	Braves	.326	8,722	.521	4,539	4,177	296,609	38,764	76,309	13,801	1,450	8,821	36,684	29,087	2,181	56,229	4,859	2,435	333,683	119,473	24,072	3,563	2,243	2,700	6,697	.257	.403	.729
13	Tigers	.326	8,729	.482	4,207	4,521	298,348	39,379	77,384	13,835	1,974	8,968	37,362	28,285	2,298	56,979	4,382	2,339	333,487	122,071	24,777	2,104	2,452	1,810	6,718	.259	.409	.735
14	Phillies	.326	8,736	.502	4,381	4,351	297,916	38,577	76,207	14,369	1,994	8,141	36,427	29,527	2,518	58,816	5,885	2,208	335,476	118,987	24,504	3,128	2,387	2,890	6,161	.256	.399	.725
15	Athletics	.325	8,731	.512	4,467	4,264	295,716	39,401	74,492	13,704	1,367	8,924	37,181	30,841	2,565	56,942	6,105	2,562	333,929	117,702	23,995	2,290	2,517	1,744	6,685	.252	.398	.723
16	Astros	.325	8,735	.513	4,482	4,251	297,018	38,236	76,433	14,347	1,855	7,721	36,075	28,328	2,594	55,689	6,615	2,797	333,766	117,653	23,923	3,398	2,428	2,679	6,452	.257	.396	.721
17	White Sox	.325	8,728	.488	4,254	4,465	297,103	39,076	77,282	13,697	1,659	8,639	37,039	27,097	2,584	54,067	5,354	2,588	331,890	120,214	23,995	2,596	2,510	1,829	6,792	.260	.405	.729
18	Brewers	.325	8,734	.489	4,271	4,460	296,551	38,901	76,040	14,231	1,729	8,586	36,877	28,442	2,678	57,963	5,826	2,675	333,150	119,487	24,546	3,092	2,387	2,116	6,500	.256	.403	.728
19	Angels	.325	8,735	.499	4,361	4,373	297,335	38,779	76,869	13,583	1,500	8,205	36,572	27,748	2,524	53,919	5,531	2,741	332,841	118,067	23,288	2,814	2,420	2,081	6,872	.259	.397	.722
20	Mariners	.325	7,603	.477	3,628	3,973	259,351	33,756	66,635	12,423	1,259	7,735	32,069	24,593	2,354	49,782	5,025	2,170	290,321	104,781	21,417	1,947	2,076	1,664	5,682	.257	.404	.729
21	Diamondbacks	.324	4,326	.489	2,114	2,212	147,605	19,777	37,614	7,725	1,067	4,620	18,845	14,378	1,426	32,657	2,511	902	165,942	61,333	13,412	1,325	1,208	1,091	3,086	.255	.416	.740
22	Giants	.324	8,737	.508	4,440	4,296	296,758	37,913	75,512	13,887	1,909	7,876	35,686	29,321	2,312	57,213	5,122	2,491	334,427	116,845	23,672	3,680	2,356	3,144	6,447	.254	.394	.718
23	Royals	.323	8,726	.478	4,168	4,557	298,582	38,272	78,531	14,747	2,259	6,907	36,135	25,487	2,421	51,280	6,967	2,829	331,438	118,517	23,913	2,314	2,634	1,828	6,657	.263	.397	.720
24	Cubs	.323	8,728	.489	4,261	4,459	297,616	38,374	76,281	14,047	1,797	8,514	36,215	28,139	2,423	58,041	4,897	2,385	333,917	119,464	24,358	3,457	2,282	2,670	6,422	.256	.401	.725
25	Rays	.323	4,324	.490	2,118	2,206	147,002	19,207	37,300	7,434	850	4,503	18,274	13,980	1,676	33,458	3,222	1,228	164,553	59,943	12,787	738	1,157	685	3,029	.254	.408	.731