which team has the best batting average in a single postseason that won world series

The Boston Red Sox have the highest batting average by a team with >0 series wins in a World Series, with an average of .333.

	TEAM	AVG	SERIES W	SEASON	SERIES	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	OBP	SLG	OPS
1	Red Sox	.333	1	2007	World Series	4	1.000	4	0	141	29	47	18	0	3	29	19	1	20	2	0	165	74	21	2	2	3	3	.411	.525	.936
2	Pirates	.323	1	1979	World Series	7	.571	4	3	251	32	81	18	1	3	32	16	3	35	0	4	278	110	22	3	5	7	4	.364	.438	.802
3	Athletics	.322	1	1910	World Series	5	.800	4	1	177	35	57	19	2	1	30	17	2	24	7	7	203	83	22	7		0	3	.388	.469	.857
4	Reds	.317	1	1990	World Series	4	1.000	4	0	142	22	45	9	2	3	21	15	1	9	2	2	160	67	14	1	1	1	5	.384	.472	.855
5	Reds	.313	1	1976	World Series	4	1.000	4	0	134	22	42	10	3	4	21	12	0	16	7	4	148	70	17	0	2	2	5	.365	.522	.887
6	Yankees	.313	1	1932	World Series	4	1.000	4	0	144	37	45	6	0	8	36	23	4	26	0	2	172	75	14	1		3	5	.421	.521	.942
7	Blue Jays	.311	1	1993	World Series	6	.667	4	2	206	45	64	13	5	6	45	25	3	30	7	4	241	105	24	0	7	1	4	.382	.510	.891
8	Angels	.310	1	2002	World Series	7	.571	4	3	245	41	76	15	1	7	38	23	2	38	6	0	275	114	23	2	3	5	6	.370	.465	.835
9	Yankees	.309	1	1998	World Series	4	1.000	4	0	139	26	43	5	0	6	25	20	1	29	1	1	162	66	11	1	1	3	4	.398	.475	.872
10	Giants	.309	1	1922	World Series	5	1.000	4	0	162	18	50	2	1	1	18	12	0	15	1	3	177	57	4	3		1	6	.356	.352	.708
11	Yankees	.306	1	1978	World Series	6	.667	4	2	222	36	68	8	0	3	34	16	2	40	5	2	241	85	11	1	0	1	4	.358	.383	.741
12	Yankees	.302	1	1936	World Series	6	.667	4	2	215	43	65	8	1	7	41	26	1	35	1	5	245	96	16	3		1	3	.380	.447	.827
13	Athletics	.301	1	1989	World Series	4	1.000	4	0	146	32	44	8	3	9	30	18	1	22	4	1	165	85	20	0	0	3	2	.382	.582	.964
14	Phillies	.294	1	1980	World Series	6	.667	4	2	201	27	59	13	0	3	26	15	2	17	3	3	224	81	16	2	4	2	5	.342	.403	.745
15	Yankees	.293	1	1923	World Series	6	.667	4	2	205	30	60	8	4	5	28	20	1	22	1	0	230	91	17	4		0	5	.358	.444	.802
16	Cubs	.293	1	1908	World Series	5	.800	4	1	164	24	48	4	2	1	20	13	0	26	15	8	185	59	7	8		0	3	.345	.360	.704
17	Orioles	.292	1	1970	World Series	5	.800	4	1	171	33	50	7	0	10	32	20	0	33	0	2	193	87	17	2	0	3	3	.366	.509	.875
18	Royals	.288	1	1985	World Series	7	.571	4	3	236	28	68	12	2	2	26	28	1	56	7	4	268	90	16	3	0	5	8	.366	.381	.747
19	White Sox	.286	1	2005	World Series	4	1.000	4	0	154	20	44	9	2	6	20	15	3	30	5	1	174	75	17	2	0	2	5	.360	.487	.847
20	Red Sox	.283	1	2004	World Series	4	1.000	4	0	138	24	39	11	2	4	24	24	4	20	0	0	167	66	17	1	0	1	3	.404	.478	.882
21	Yankees	.282	1	1947	World Series	7	.571	4	3	238	38	67	11	5	4	36	38	2	37	2	1	281	100	20	3		2	8	.385	.420	.805
22	Athletics	.281	1	1929	World Series	5	.800	4	1	171	26	48	5	0	6	26	13	1	27	0	2	191	71	11	6		1	3	.335	.415	.750
23	Yankees	.279	1	1927	World Series	4	1.000	4	0	136	23	38	6	2	2	19	13	1	25	2	0	152	54	10	2		1	2	.347	.397	.744
24	Cardinals	.279	1	1934	World Series	7	.571	4	3	262	34	73	14	5	2	32	11	1	31	2	4	278	103	21	4		0	4	.310	.393	.703
25	Yankees	.279	1	1953	World Series	6	.667	4	2	201	33	56	6	4	9	32	25	4	43	2	4	234	97	19	4		2	2	.370	.483	.852