best single season mlb record based on winning percentages after 1950

Since 1951, the Cleveland Indians have the best record by a team in a season, with a record of 111-43 in 1954.

	TEAM	REC	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	Indians	111-43	.721	1954	111	43	156	5,222	746	1,368	188	39	156	714	637	23	668	30	33	6,048	2,102	383	107	59		114	.262	.341	.403	.744
2	Dodgers	43-17	.717	2020	43	17	60	2,042	349	523	97	6	118	327	228	30	471	29	8	2,315	986	221	3	12	7	46	.256	.338	.483	.821
3	Mariners	116-46	.716	2001	116	46	162	5,680	927	1,637	310	38	169	881	614	62	989	174	42	6,474	2,530	517	48	70	54	112	.288	.360	.445	.805
4	Yankees	114-48	.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
5	Indians	100-44	.694	1995	100	44	144	5,028	840	1,461	279	23	207	803	542	35	766	132	53	5,684	2,407	509	31	48	40	128	.291	.361	.479	.839
6	Dodgers	111-51	.685	2022	111	51	162	5,526	847	1,418	325	31	212	812	607	56	1,374	98	18	6,245	2,441	568	3	53	22	85	.257	.333	.442	.775
7	Dodgers	105-49	.682	1953	105	49	155	5,373	955	1,529	274	59	208	887	655	35	686	90	47	6,138	2,545	541	75			115	.285	.366	.474	.840
8	Orioles	109-53	.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
9	Yankees	109-53	.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
10	Yankees	103-51	.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	Rays	40-20	.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
12	Red Sox	108-54	.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
13	Mets	108-54	.667	1986	108	54	162	5,558	783	1,462	261	31	148	730	631	31	968	118	48	6,348	2,229	440	75	53	68	122	.263	.339	.401	.740
14	Reds	108-54	.667	1975	108	54	162	5,581	840	1,515	278	37	124	779	691	35	916	168	36	6,418	2,239	439	66	45	67	122	.271	.353	.401	.754
15	Orioles	108-54	.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
16	Giants	107-55	.660	2021	107	55	162	5,462	804	1,360	271	25	241	768	602	64	1,461	66	14	6,194	2,404	537	36	30	45	117	.249	.329	.440	.769
17	Astros	107-55	.660	2019	107	55	162	5,613	920	1,538	323	28	288	891	645	66	1,166	67	27	6,391	2,781	639	10	57	17	146	.274	.352	.495	.848
18	Yankees	99-52	.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
19	Astros	106-56	.654	2022	106	56	162	5,409	737	1,341	284	13	214	715	528	60	1,179	83	22	6,048	2,293	511	9	42	18	118	.248	.319	.424	.743
20	Dodgers	106-56	.654	2021	106	56	162	5,445	830	1,330	247	24	237	799	613	104	1,408	65	17	6,239	2,336	508	32	45	36	96	.244	.330	.429	.759
21	Dodgers	106-56	.654	2019	106	56	162	5,493	886	1,414	302	20	279	861	607	81	1,356	57	10	6,281	2,593	601	55	45	47	100	.257	.338	.472	.810
22	Braves	106-56	.654	1998	106	56	162	5,484	826	1,489	297	26	215	794	548	61	1,062	98	43	6,215	2,483	538	76	46	37	104	.272	.342	.453	.795
23	Expos	74-40	.649	1994	74	40	114	4,000	585	1,111	246	30	108	542	379	40	669	137	36	4,514	1,741	384	53	42	39	77	.278	.343	.435	.778
24	Cardinals	105-57	.648	2004	105	57	162	5,555	855	1,544	319	24	214	817	548	51	1,085	111	47	6,297	2,553	557	73	70	64	121	.278	.344	.460	.804
25	Yankees	104-57	.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