who has the highest playoff batting average of all-time with at least 50 plate appearances

Pepper Martin has the best career batting average in the postseason when making 50+ plate appearances, with an average of .418.

	NAME	AVG	PA	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	OBP	SLG	OPS
1	Pepper Martin P. Martin	.418	60	15	55	14	23	7	1	1	9	5	0	6	7	2	35	9	0		0	0	.467	.636	1.103
2	Fred Lynn F. Lynn	.407	61	15	54	8	22	4	0	2	13	5	0	8	0	0	32	6	1	1	0	2	.450	.593	1.043
3	Billy Hatcher B. Hatcher	.404	61	14	52	12	21	5	1	2	6	5	1	4	3	1	34	8	3	0	1	1	.466	.654	1.119
4	Jose Offerman J. Offerman	.400	53	14	45	8	18	1	1	1	9	8	0	3	1	1	24	3	0	0	0	1	.491	.533	1.024
5	Lou Brock L. Brock	.391	92	21	87	16	34	7	2	4	13	5	0	10	14	2	57	13	0	0	0	0	.424	.655	1.079
6	Hanley Ramirez H. Ramirez	.380	80	20	71	9	27	9	1	1	14	7	2	13	2	0	41	11	0	0	3	2	.450	.577	1.027
7	Fernando Tatis Jr. F. Tatis Jr.	.375	57	13	48	13	18	5	0	6	12	8	1	9	1	1	41	11	0	0	1	1	.474	.854	1.328
8	Bob Watson B. Watson	.371	67	17	62	4	23	4	1	2	9	4	0	2	0	0	35	7	0	1	0	0	.403	.565	.968
9	Carl Yastrzemski C. Yastrzemski	.369	76	17	65	15	24	3	0	4	11	9	1	3	0	0	39	7	0	1	2	2	.447	.600	1.047
10	Paul Molitor P. Molitor	.368	132	29	117	28	43	5	3	6	22	12	2	15	3	2	72	14	1	0	1	2	.435	.615	1.050
11	Spike Owen S. Owen	.366	52	15	41	7	15	0	1	0	5	8	0	8	1	0	17	1	2	1	2	1	.460	.415	.875
12	A.J. Ellis	.365	61	17	52	7	19	5	1	2	5	7	1	9	0	0	32	8	1	0	1	0	.450	.615	1.065
13	Home Run Baker H. Run Baker	.363	97	25	91	15	33	7	1	3	18	5	0	11	1	4	51	11	0		2	1	.396	.560	.956
14	Hank Aaron H. Aaron	.362	74	17	69	11	25	4	1	6	16	5	0	13	0	0	49	11	0	0	0	2	.405	.710	1.116
15	Jerry Hairston J. Hairston	.362	54	17	47	9	17	6	0	0	4	4	0	6	0	0	23	6	1	2	0	0	.396	.489	.886
16	Lou Gehrig L. Gehrig	.361	150	34	119	30	43	8	3	10	35	26	2	17	0	1	87	21	1		2	1	.483	.731	1.214
17	Mark DeRosa M. DeRosa	.358	58	22	53	8	19	6	1	1	10	4	1	8	0	0	30	8	0	0	0	2	.414	.566	.980
18	Thurman Munson T. Munson	.357	135	30	129	19	46	9	0	3	22	5	0	19	1	1	64	12	0	1	1	4	.378	.496	.874
19	Mike Stanley M. Stanley	.356	83	20	73	9	26	3	1	1	7	8	2	14	0	0	34	5	0	0	0	3	.434	.466	.899
20	Charlie Moore C. Moore	.354	54	16	48	6	17	3	0	0	3	3	1	4	0	0	20	3	2	0	1	0	.404	.417	.821
21	James Loney J. Loney	.350	91	23	80	6	28	5	0	3	16	10	1	13	0	0	42	8	0	0	2	5	.429	.525	.954
22	Vinny Castilla V. Castilla	.350	66	17	60	9	21	1	0	5	12	5	1	12	0	0	37	6	0	0	0	2	.409	.617	1.026
23	Earle Combs E. Combs	.350	72	16	60	17	21	3	0	1	9	10	1	7	0	0	27	4	0		0	1	.451	.450	.901
24	Stan Hack S. Hack	.348	76	18	69	6	24	5	1	0	5	7	0	6	1	2	31	6	0		0	3	.408	.449	.857
25	Steven Kwan S. Kwan	.347	80	17	72	14	25	2	0	1	4	8	0	6	3	0	30	3	0	0	0	1	.413	.417	.829