Since 2012, the New York Yankees have the highest winning percentage by an AL team, winning 56.5 percent of the time.

	TEAM	W%	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Yankees	.565	1,223	943	2,166	73,099	10,353	18,214	3,360	242	3,045	9,892	7,682	769	17,751	1,177	348	82,400	31,193	6,647	234	616	329	1,620	.249	.325	.427	.751
2	Astros	.548	1,097	906	2,003	68,166	9,437	17,439	3,499	245	2,568	9,022	6,438	764	15,830	1,134	418	76,136	29,132	6,312	224	544	268	1,582	.256	.325	.427	.752
3	Guardians	.540	1,169	994	2,163	73,001	9,608	18,233	3,766	317	2,292	9,155	6,979	791	16,344	1,558	430	81,773	29,509	6,375	372	630	371	1,534	.250	.319	.404	.724
4	Rays	.533	1,155	1,012	2,167	73,263	9,494	18,120	3,624	373	2,435	9,034	7,002	918	18,676	1,490	543	81,974	29,795	6,432	235	556	281	1,479	.247	.319	.407	.725
5	Red Sox	.524	1,135	1,031	2,166	74,996	10,574	19,665	4,397	315	2,473	10,049	6,984	792	17,674	1,254	376	83,565	32,111	7,185	209	584	420	1,651	.262	.329	.428	.757
6	Mariners	.508	1,100	1,066	2,166	73,184	9,327	17,652	3,335	261	2,598	8,912	6,881	942	18,645	1,273	454	81,770	29,303	6,194	275	488	276	1,482	.241	.313	.400	.713
7	Blue Jays	.508	1,100	1,066	2,166	73,563	10,067	18,597	3,807	234	2,784	9,630	7,016	727	16,869	1,035	360	82,117	31,224	6,825	282	529	228	1,716	.253	.322	.424	.746
8	Athletics	.490	1,061	1,105	2,166	73,204	9,499	17,682	3,659	316	2,553	9,058	7,028	796	17,809	1,067	327	81,776	29,632	6,528	226	522	248	1,593	.242	.313	.405	.718
9	Rangers	.487	1,056	1,111	2,167	73,423	9,841	18,293	3,498	308	2,539	9,365	6,560	861	17,742	1,456	502	81,714	30,024	6,345	315	555	295	1,437	.249	.316	.409	.725
10	Orioles	.483	1,047	1,119	2,166	73,891	9,590	18,380	3,571	251	2,792	9,194	6,035	780	18,183	942	335	81,465	30,829	6,614	254	505	240	1,515	.249	.310	.417	.727
11	Angels	.480	1,040	1,126	2,166	73,153	9,538	18,083	3,405	311	2,545	9,095	6,629	864	17,505	1,182	429	81,510	29,745	6,261	305	559	387	1,641	.247	.315	.407	.722
12	Twins	.477	1,034	1,132	2,166	73,848	9,832	18,452	3,800	332	2,549	9,379	6,977	848	18,140	988	366	82,471	30,563	6,681	249	549	279	1,505	.250	.320	.414	.733
13	Tigers	.473	1,023	1,138	2,161	73,594	9,269	18,647	3,584	466	2,203	8,889	6,267	677	18,013	909	366	81,314	29,772	6,253	217	559	309	1,622	.253	.316	.405	.720
14	Royals	.466	1,009	1,157	2,166	73,526	9,041	18,651	3,632	442	1,995	8,614	5,572	743	15,868	1,673	490	80,788	29,152	6,069	358	589	266	1,571	.254	.310	.396	.707
15	White Sox	.437	947	1,218	2,165	73,548	8,967	18,277	3,430	306	2,272	8,594	5,775	804	18,248	1,072	413	80,926	29,135	6,008	320	479	221	1,603	.249	.308	.396	.704