mlb team best win% each season to win championships

12 teams won a championship. The first three are the Pittsburgh Pirates in 1909, the Los Angeles Dodgers in 2020 and the New York Yankees 10 times.

	TEAM	CHAMPS	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	Pirates	1	.724	1909	110	42	154	5,128	701	1,332	218	92	25	585	479	36	511	185		5,860	1,809	335	217				.260	.327	.353	.680
2	Dodgers	1	.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	Yankees	1	.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
4	Cubs	1	.704	1907	107	45	155	4,892	571	1,224	162	48	13	450	435	48	449	235		5,570	1,521	223	195				.250	.318	.311	.628
5	Yankees	1	.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
6	Yankees	1	.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
7	Yankees	1	.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
8	Athletics	1	.693	1929	104	46	151	5,204	901	1,537	288	75	122	845	540	29	440	63	42	5,987	2,341	485	214				.295	.365	.450	.815
9	Red Sox	1	.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
10	Cardinals	1	.688	1942	106	48	156	5,422	755	1,454	282	69	60	680	551	22	505	71		6,125	2,054	411	130			90	.268	.338	.379	.717
11	Giants	1	.686	1905	105	48	155	5,094	778	1,392	191	88	39	642	517	90	497	291		5,839	1,876	318	138				.273	.351	.368	.719
12	Reds	1	.686	1919	96	44	140	4,577	578	1,204	135	83	20	489	405	33	368	143		5,214	1,565	238	199				.263	.327	.342	.669
13	Cardinals	1	.682	1944	105	49	157	5,474	772	1,507	274	59	100	722	543	27	471	37		6,168	2,199	433	124			96	.275	.344	.402	.745
14	Athletics	1	.680	1910	102	48	155	5,154	671	1,373	191	105	19	541	409	47	573	207		5,809	1,831	315	199				.266	.326	.355	.681
15	Yankees	1	.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
16	Red Sox	1	.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
17	Athletics	1	.669	1911	101	50	152	5,199	861	1,540	237	93	35	692	424	65	523	226		5,920	2,068	365	232				.296	.357	.398	.754
18	Red Sox	1	.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
19	Mets	1	.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
20	Reds	1	.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
21	Orioles	1	.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
22	Yankees	1	.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
23	Yankees	1	.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
24	Athletics	1	.662	1930	102	52	154	5,346	951	1,573	320	74	125	895	600	32	531	50	33	6,161	2,416	519	183				.294	.369	.452	.821
25	Americans	1	.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