who has the highest career post season average minimum 20 at bats

Derek Jeter has the most career at-bats in the postseason, with 650 at-bats.

	NAME	AB	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Derek Jeter D. Jeter	650	158	111	200	32	5	20	61	66	5	135	18	5	734	302	57	9	4	3	14	.308	.374	.465	.838
2	Bernie Williams B. Williams	465	121	83	128	29	0	22	80	71	3	85	8	5	545	223	51	0	6	11	17	.275	.371	.480	.850
3	Jose Altuve J. Altuve	436	105	89	118	21	0	27	56	43	2	75	9	5	484	220	48	0	3	2	15	.271	.337	.505	.841
4	Jorge Posada J. Posada	416	125	53	103	23	1	11	42	70	3	109	3	3	492	161	35	0	3	9	15	.248	.358	.387	.745
5	Manny Ramirez M. Ramirez	410	111	67	117	19	0	29	78	72	5	91	1	1	493	223	48	0	6	12	17	.285	.394	.544	.937
6	David Justice D. Justice	398	112	55	89	17	2	14	63	64	5	79	3	2	471	152	33	0	4	7	7	.224	.335	.382	.717
7	Kenny Lofton K. Lofton	392	95	65	97	12	4	7	34	38	2	68	34	6	438	138	23	3	3	3	4	.247	.315	.352	.667
8	Yadier Molina Y. Molina	373	104	29	102	19	0	4	36	27	3	44	1	1	406	133	23	1	2	6	13	.273	.326	.357	.682
9	Alex Bregman A. Bregman	370	99	63	88	17	1	19	54	53	9	64	3	1	434	164	37	0	2	4	10	.238	.346	.443	.789
10	Tino Martinez T. Martinez	356	99	44	83	15	0	9	38	41	6	72	3	2	405	125	24	0	2	7	1	.233	.321	.351	.672
11	Yuli Gurriel Y. Gurriel	348	92	35	91	15	1	8	39	28	2	36	5	0	380	132	24	0	2	5	7	.261	.318	.379	.698
12	Chipper Jones C. Jones	338	93	58	97	18	0	13	47	72	1	61	8	3	417	154	31	1	5	11	10	.287	.409	.456	.864
13	Carlos Correa C. Correa	323	85	38	91	19	0	18	63	31	4	84	1	0	358	164	37	0	0	2	8	.282	.352	.508	.860
14	Justin Turner J. Turner	315	86	43	85	19	1	13	42	38	13	59	5	0	368	145	33	0	2	1	6	.270	.370	.460	.830
15	David Ortiz D. Ortiz	304	85	51	88	22	2	17	61	59	2	72	0	1	369	165	41	0	4	11	4	.289	.404	.543	.947
16	Albert Pujols A. Pujols	304	88	57	97	18	1	19	54	50	5	46	1	2	360	174	38	0	1	20	7	.319	.422	.572	.995
17	Corey Seager C. Seager	299	78	55	76	17	1	19	48	42	3	79	3	0	346	152	37	0	2	3	6	.254	.350	.508	.858
18	Paul O'Neill P. O'Neill	299	85	39	85	17	2	11	39	38	0	41	5	0	340	139	30	1	2	2	12	.284	.363	.465	.828
19	Mookie Betts M. Betts	293	74	54	76	22	0	8	34	40	1	54	16	1	339	122	30	0	5	7	4	.259	.345	.416	.762
20	Matt Holliday M. Holliday	290	77	42	71	10	1	13	37	18	6	62	1	1	314	122	24	0	0	0	5	.245	.303	.421	.723
21	Reggie Jackson R. Jackson	281	77	41	78	14	1	18	48	33	3	70	5	2	318	148	33	0	1	3	5	.278	.358	.527	.885
22	Alex Rodriguez A. Rodriguez	278	76	43	72	16	0	13	41	39	9	77	8	3	330	127	29	1	3	4	6	.259	.365	.457	.822
23	George Springer G. Springer	276	67	43	74	15	0	19	38	31	2	74	4	1	309	146	34	0	0	1	4	.268	.346	.529	.875
24	Pete Rose P. Rose	268	67	30	86	13	2	5	22	28	2	22	2	5	301	118	20	1	1	7	3	.321	.388	.440	.828
25	Johnny Damon J. Damon	261	59	39	72	12	2	10	33	17	1	40	13	1	279	118	24	0	0	0	5	.276	.323	.452	.775