who has the highest playoff batting average of all-time with at least 150 plate appearances

Lou Gehrig has the highest career batting average in the postseason when making 150+ plate appearances, with an average of .361.

	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	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
2	Steve Garvey S. Garvey	.338	232	55	222	32	75	8	3	11	31	8	0	32	2	2	122	22	2	0	4	4	.361	.550	.910
3	Pablo Sandoval P. Sandoval	.338	171	42	157	21	53	13	0	6	20	10	3	24	0	0	84	19	0	1	3	7	.386	.535	.921
4	George Brett G. Brett	.337	184	43	166	30	56	8	5	10	23	17	0	20	2	3	104	23	0	1	6	4	.397	.627	1.023
5	Tony Fernandez T. Fernandez	.327	168	43	150	13	49	11	0	1	23	10	2	16	5	1	63	12	2	4	3	4	.367	.420	.787
6	Babe Ruth B. Ruth	.326	167	41	129	37	42	5	2	15	33	33	2	30	4	3	96	22	2		2	3	.470	.744	1.214
7	Pete Rose P. Rose	.321	301	67	268	30	86	13	2	5	22	28	2	22	2	5	118	20	1	1	7	3	.388	.440	.828
8	Albert Pujols A. Pujols	.319	360	88	304	57	97	18	1	19	54	50	5	46	1	2	174	38	0	1	20	7	.422	.572	.995
9	Lance Berkman L. Berkman	.317	224	52	186	38	59	11	1	9	41	31	3	41	4	1	99	21	0	3	6	4	.417	.532	.949
10	Marquis Grissom M. Grissom	.317	231	52	218	34	69	7	3	5	20	12	1	42	12	4	97	15	0	0	0	2	.355	.445	.800
11	Victor Martinez V. Martinez	.315	163	39	149	22	47	8	1	6	22	11	3	23	0	0	75	15	0	0	3	3	.374	.503	.878
12	Roberto Alomar R. Alomar	.313	263	58	230	32	72	16	1	4	33	27	0	32	20	2	102	21	3	3	3	9	.381	.443	.824
13	Hideki Matsui H. Matsui	.312	235	56	205	32	64	15	1	10	39	27	1	33	0	0	111	26	0	2	2	5	.391	.541	.933
14	Derek Jeter D. Jeter	.308	734	158	650	111	200	32	5	20	61	66	5	135	18	5	302	57	9	4	3	14	.374	.465	.838
15	Carlos Beltran C. Beltran	.307	256	65	215	45	66	15	1	16	42	37	2	33	11	0	131	32	1	1	2	3	.412	.609	1.021
16	Brooks Robinson B. Robinson	.303	156	39	145	17	44	8	0	5	21	6	0	9	0	2	67	13	1	4	1	3	.323	.462	.785
17	Fred McGriff F. McGriff	.303	218	50	188	36	57	10	1	10	37	27	0	40	1	1	99	21	0	3	4	4	.385	.527	.912
18	David Freese D. Freese	.299	230	69	204	26	61	17	2	10	36	20	4	55	0	1	112	29	0	2	2	9	.370	.549	.919
19	Devon White D. White	.296	211	49	189	27	56	12	4	3	20	19	2	48	7	6	85	19	0	1	2	1	.365	.450	.815
20	Frankie Frisch F. Frisch	.294	216	50	197	16	58	10	3	0	10	12	1	9	9	3	74	13	4		0	3	.338	.376	.714
21	Yordan Alvarez Y. Alvarez	.294	252	60	214	39	63	13	3	12	41	31	5	69	0	0	118	28	0	2	5	1	.393	.551	.944
22	Bill Russell B. Russell	.294	209	49	194	14	57	5	3	0	18	11	0	15	3	3	68	8	4	0	3	5	.332	.351	.682
23	Hal McRae H. McRae	.292	165	48	144	14	42	14	1	1	15	12	4	23	1	6	61	16	2	3	1	0	.356	.424	.779
24	Jason Giambi J. Giambi	.290	174	45	138	19	40	6	0	7	19	30	4	30	1	0	67	13	0	2	2	3	.425	.486	.911
25	David Ortiz D. Ortiz	.289	369	85	304	51	88	22	2	17	61	59	2	72	0	1	165	41	0	4	11	4	.404	.543	.947