greatest mlb post season win% in a single season

7 teams are tied for the best winning percentage in a postseason, winning 100.0 percent of the time. The first three are the Cincinnati Reds in 1976, the Baltimore Orioles in 1966 and the Los Angeles Dodgers in 1963.

	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	Reds	1.000	1976	7	0	7	233	41	67	15	6	7	38	27	0	32	12	5	266	115	28	1	5	5	6	.288	.355	.494	.848
2	Orioles	1.000	1966	4	0	4	120	13	24	3	1	4	10	11	0	17	0	1	133	41	8	2	0	2	4	.200	.267	.342	.609
3	Dodgers	1.000	1963	4	0	4	117	12	25	3	2	3	12	11	0	25	2	1	131	41	8	2	1	2	5	.214	.279	.350	.629
4	Giants	1.000	1954	4	0	4	130	21	33	3	0	2	20	17	0	24	1	1	155	42	5	6	2	4	1	.254	.336	.323	.659
5	Yankees	1.000	1950	4	0	4	135	11	30	3	1	2	10	13	1	12	1	1	151	41	6	2		1	0	.222	.295	.304	.599
6	Yankees	1.000	1939	4	0	4	131	20	27	4	1	7	18	9	0	20	0	0	142	54	12	2		1	1	.206	.257	.412	.669
7	Yankees	1.000	1938	4	0	4	135	22	37	6	1	5	21	11	1	16	3	2	148	60	12	1		1	2	.274	.333	.444	.778
8	Yankees	1.000	1932	4	0	4	144	37	45	6	0	8	36	23	4	26	0	2	172	75	14	1		3	5	.313	.421	.521	.942
9	Yankees	1.000	1928	4	0	4	134	27	37	7	0	9	25	13	1	13	4	0	151	71	16	3		0	3	.276	.345	.530	.874
10	Yankees	1.000	1927	4	0	4	136	23	38	6	2	2	19	13	1	25	2	0	152	54	10	2		1	2	.279	.347	.397	.744
11	Giants	1.000	1922	4	0	5	162	18	50	2	1	1	18	12	0	15	1	3	177	57	4	3		1	6	.309	.356	.352	.708
12	Braves	1.000	1914	4	0	4	135	16	33	6	2	1	14	15	1	18	9	3	153	46	9	2		1	3	.244	.325	.341	.665
13	Cubs	1.000	1907	4	0	5	166	19	42	6	1	0	15	13	4	26	15	5	192	50	7	9		0	0	.253	.322	.301	.624
14	White Sox	.917	2005	11	1	12	416	67	113	25	3	18	67	36	12	77	13	7	474	198	46	8	2	3	10	.272	.345	.476	.821
15	Yankees	.917	1999	11	1	12	411	58	102	15	2	15	54	41	2	94	8	2	460	166	32	6	0	8	4	.248	.319	.404	.723
16	Athletics	.889	1989	8	1	9	304	58	87	17	4	16	53	38	2	54	17	3	349	160	37	3	2	3	4	.286	.367	.526	.893
17	Tigers	.875	1984	7	1	8	265	37	65	8	1	11	37	32	2	44	11	4	306	108	20	4	3	1	4	.245	.328	.408	.735
18	Orioles	.875	1970	7	1	8	280	60	86	14	0	16	56	32	1	52	1	2	318	148	30	3	2	4	7	.307	.378	.529	.906
19	Mets	.875	1969	7	1	8	272	42	72	16	1	12	37	25	1	60	6	2	302	126	29	3	1	4	5	.265	.328	.463	.791
20	Astros	.846	2022	11	2	13	455	53	106	20	0	17	52	35	11	118	5	2	505	177	37	2	2	2	9	.233	.302	.389	.691
21	Yankees	.846	1998	11	2	13	427	62	109	19	1	14	58	62	4	95	12	5	502	172	34	5	4	5	14	.255	.352	.403	.755
22	Dodgers	.833	2025	5	1	6	216	31	56	10	1	7	29	18	7	56	0	0	243	89	18	2	0	4	2	.259	.336	.412	.748
23	Reds	.800	1990	8	2	10	334	42	94	18	2	7	42	25	2	46	8	5	369	137	27	4	4	5	9	.281	.332	.410	.742
24	Yankees	.800	1961	4	1	5	165	27	42	8	1	7	26	24	0	25	1	1	193	73	16	3	1	5	4	.255	.347	.442	.790
25	Yankees	.800	1949	4	1	5	164	21	37	10	2	2	20	18	0	27	2	0	185	57	14	3		1	0	.226	.302	.348	.650