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

Interpreted as:

most postseason at bats by a player

	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	Alex Bregman A. Bregman	380	102	63	91	18	1	19	55	56	9	66	3	1	447	168	38	0	2	4	11	.239	.349	.442	.791
9	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
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	Mookie Betts M. Betts	349	87	57	90	26	1	8	40	47	2	61	16	1	403	142	35	0	5	8	6	.258	.345	.407	.752
12	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
13	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
14	George Springer G. Springer	333	81	56	88	21	0	23	47	36	4	88	4	1	374	178	44	0	1	1	5	.264	.342	.535	.877
15	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
16	Justin Turner J. Turner	317	87	43	86	19	1	13	42	38	13	59	5	0	370	146	33	0	2	1	6	.271	.370	.461	.831
17	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
18	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
19	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
20	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
21	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
22	Freddie Freeman F. Freeman	283	75	38	76	17	1	16	39	41	5	61	4	0	330	143	34	0	1	5	4	.269	.370	.505	.875
23	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
24	Enrique Hernández E. Hernández	279	99	45	78	11	2	15	40	27	4	67	3	3	312	138	28	1	1	2	3	.280	.350	.495	.845
25	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