what team has the most team obp in a single postseason

The New York Yankees have the highest on-base percentage by a team in a postseason, with an on-base percentage of .421 in 1932.

	TEAM	OBP	SEASON	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS
1	Yankees	.421	1932	4	1.000	4	0	144	37	45	6	0	8	36	23	4	26	0	2	172	75	14	1		3	5	.313	.521	.942
2	Red Sox	.395	2007	14	.786	11	3	476	99	149	41	1	18	96	66	4	85	6	1	559	246	60	4	9	8	23	.313	.517	.911
3	Athletics	.388	1910	5	.800	4	1	177	35	57	19	2	1	30	17	2	24	7	7	203	83	22	7		0	3	.322	.469	.857
4	Yankees	.385	1947	7	.571	4	3	238	38	67	11	5	4	36	38	2	37	2	1	281	100	20	3		2	8	.282	.420	.805
5	Brewers	.385	2023	2	.000	0	2	68	5	21	2	0	1	5	7	2	19	1	0	79	26	3	1	1	0	3	.309	.382	.767
6	Yankees	.383	1960	7	.429	3	4	269	55	91	13	4	10	54	18	2	40	0	2	292	142	27	2	1	3	5	.338	.528	.911
7	Yankees	.380	1936	6	.667	4	2	215	43	65	8	1	7	41	26	1	35	1	5	245	96	16	3		1	3	.302	.447	.827
8	Orioles	.378	1970	8	.875	7	1	280	60	86	14	0	16	56	32	1	52	1	2	318	148	30	3	2	4	7	.307	.529	.906
9	Padres	.375	2005	3	.000	0	3	106	11	32	4	0	3	11	10	3	17	2	0	120	45	7	0	1	0	7	.302	.425	.800
10	Blue Jays	.374	1993	12	.667	8	4	422	71	129	21	8	8	69	46	5	66	14	6	482	190	37	1	8	5	9	.306	.450	.824
11	Red Sox	.374	2004	14	.786	11	3	525	90	149	29	3	18	87	72	6	96	7	2	609	238	50	2	4	7	13	.284	.453	.827
12	Yankees	.370	1953	6	.667	4	2	201	33	56	6	4	9	32	25	4	43	2	4	234	97	19	4		2	2	.279	.483	.852
13	Red Sox	.369	1999	10	.400	4	6	360	68	110	30	3	15	66	34	4	73	5	2	402	191	48	1	3	4	9	.306	.531	.900
14	Astros	.369	2018	8	.500	4	4	273	42	71	16	0	14	41	39	8	67	3	3	321	129	30	1	0	4	4	.260	.473	.841
15	Angels	.367	2002	16	.688	11	5	565	101	181	30	3	24	95	39	6	82	11	2	623	289	57	8	5	8	13	.320	.512	.879
16	Yankees	.367	2002	4	.250	1	3	135	25	38	4	0	7	24	16	4	25	1	0	158	63	11	0	3	0	6	.281	.467	.834
17	Athletics	.367	1989	9	.889	8	1	304	58	87	17	4	16	53	38	2	54	17	3	349	160	37	3	2	3	4	.286	.526	.893
18	Yankees	.365	1995	5	.400	2	3	193	33	50	12	0	11	32	32	2	43	1	1	232	95	23	2	3	3	3	.259	.492	.857
19	Yankees	.362	2004	11	.545	6	5	431	66	121	31	2	15	64	48	8	81	7	2	494	201	48	5	2	5	10	.281	.466	.828
20	Royals	.362	1980	9	.556	5	4	304	37	88	15	3	11	36	35	1	64	9	6	345	142	29	2	3	3	9	.289	.467	.829
21	Cubs	.361	1989	5	.200	1	4	175	22	53	9	3	3	21	16	1	27	3	0	197	77	15	3	2	3	6	.303	.440	.801
22	White Sox	.361	2021	4	.250	1	3	141	18	41	3	0	3	18	12	4	39	0	1	158	53	6	0	1	0	5	.291	.376	.737
23	Rockies	.359	2017	1	.000	0	1	38	8	13	3	0	2	8	1	0	6	0	0	40	22	5	1	0	0	1	.342	.579	.938
24	Athletics	.358	2014	1	.000	0	1	47	8	13	0	0	2	8	6	0	15	0	0	54	19	2	1	0	1	0	.277	.404	.763
25	Yankees	.358	1923	6	.667	4	2	205	30	60	8	4	5	29	20	1	22	1	0	230	91	17	4		0	5	.293	.444	.802