blue jays orioles rays red sox yankees best win% in a season

The New York Yankees had their best winning percentage in a season in 1927, winning 71.4 percent of the time.

	TEAM	W%	SEASON	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	.714	1927	110	44	155	5,354	976	1,644	291	103	158	907	642	22	610	90	64	6,222	2,615	552	204				.307	.384	.488	.872
2	Yankees	.704	1998	114	48	162	5,643	965	1,625	290	31	207	907	653	57	1,025	153	63	6,444	2,598	528	32	59	34	145	.288	.364	.460	.825
3	Yankees	.702	1939	106	45	152	5,300	967	1,521	259	55	166	904	701	36	543	72	37	6,129	2,388	480	92			99	.287	.374	.451	.825
4	Yankees	.695	1932	107	47	156	5,476	1,002	1,564	279	82	160	954	765	27	526	77	66	6,344	2,487	521	76				.286	.376	.454	.830
5	Red Sox	.691	1912	105	47	154	5,071	799	1,404	269	84	29	654	565	45	586	185	182	5,872	1,928	382	191				.277	.355	.380	.735
6	Red Sox	.675	1946	104	50	156	5,318	792	1,441	268	50	109	737	687	15	661	45	36	6,126	2,136	427	106			133	.271	.356	.402	.758
7	Orioles	.673	1969	109	53	162	5,518	779	1,465	234	29	175	722	634	43	806	82	45	6,328	2,282	438	74	59	62	138	.265	.343	.414	.756
8	Yankees	.673	1961	109	53	163	5,559	827	1,461	194	40	240	781	543	35	785	28	18	6,239	2,455	474	57	45	45	120	.263	.330	.442	.771
9	Red Sox	.669	1915	101	50	155	5,024	668	1,308	202	76	14	574	527	49	476	118	117	5,865	1,704	292	265				.260	.336	.339	.676
10	Yankees	.669	1954	103	51	155	5,226	805	1,400	215	59	133	747	650	20	632	34	41	6,027	2,132	407	84	47		94	.268	.348	.408	.756
11	Yankees	.669	1942	103	51	154	5,305	801	1,429	223	57	108	744	591	29	556	69	33	6,009	2,090	388	84			103	.269	.346	.394	.740
12	Rays	.667	2020	40	20	60	1,975	289	470	105	12	80	274	243	28	608	48	9	2,260	839	197	0	14	9	38	.238	.328	.425	.753
13	Red Sox	.667	2018	108	54	162	5,623	876	1,509	355	31	208	829	569	55	1,253	125	31	6,302	2,550	594	7	48	38	130	.268	.339	.453	.792
14	Orioles	.667	1970	108	54	162	5,545	792	1,424	213	25	179	748	717	44	952	84	39	6,416	2,224	417	64	46	64	110	.257	.344	.401	.745
15	Yankees	.667	1936	102	51	155	5,591	1,065	1,676	315	83	182	997	700	33	593	77	40	6,391	2,703	580	67				.300	.381	.483	.864
16	Yankees	.662	1937	102	52	157	5,487	979	1,554	282	73	174	921	712	34	607	60	36	6,294	2,504	529	61				.283	.369	.456	.825
17	Americans	.659	1903	91	47	141	4,919	708	1,336	222	113	48	609	262	36	559	141		5,365	1,928	383	148				.272	.313	.392	.705
18	Yankees	.656	1941	101	53	156	5,444	830	1,464	243	60	151	774	616	28	564	51	33	6,137	2,280	454	49			102	.269	.346	.419	.765
19	Yankees	.656	1928	101	53	154	5,337	894	1,576	267	79	133	826	562	23	553	51	52	6,067	2,400	479	145				.295	.365	.450	.815
20	Yankees	.656	1953	99	52	151	5,194	801	1,420	226	52	139	762	655	34	643	34	44	5,960	2,167	417	77			105	.273	.358	.417	.776
21	Yankees	.651	1938	99	53	157	5,410	966	1,480	283	63	174	918	749	39	617	91	28	6,259	2,411	520	61				.274	.366	.446	.812
22	Yankees	.646	1963	104	57	161	5,506	714	1,387	197	35	188	666	434	31	808	42	26	6,067	2,218	420	66	30	46	91	.252	.309	.403	.711
23	Yankees	.645	1923	98	54	152	5,345	824	1,555	231	80	105	767	511	35	515	69	74	6,036	2,261	416	145				.291	.357	.423	.780
24	Orioles	.642	1979	102	57	159	5,371	757	1,401	258	24	181	717	608	31	847	99	49	6,106	2,250	463	42	54	52	143	.261	.336	.419	.755
25	Yankees	.641	1921	98	55	153	5,250	948	1,576	284	87	134	875	575	41	571	89	64	6,056	2,436	505	190				.300	.374	.464	.838