Alex Bregman has the most career games by a third baseman in the postseason, with 102 games.

	NAME	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Alex Bregman A. Bregman	102	380	63	91	18	1	19	55	56	9	66	3	1	447	168	38	0	2	4	11	.239	.349	.442	.791
2	Justin Turner J. Turner	86	315	43	85	19	1	13	42	38	13	59	5	0	368	145	33	0	2	1	6	.270	.370	.460	.830
3	Chipper Jones C. Jones	83	303	52	89	18	0	11	39	64	1	55	8	3	374	140	29	1	5	10	8	.294	.413	.462	.875
4	Terry Pendleton T. Pendleton	66	230	26	58	12	3	3	23	12	0	30	2	3	244	85	18	1	1	3	4	.252	.288	.370	.658
5	Alex Rodriguez A. Rodriguez	60	221	37	54	13	0	10	33	36	9	59	7	2	269	97	23	0	3	4	5	.244	.368	.439	.807
6	Scott Brosius S. Brosius	58	196	19	48	8	1	8	30	8	2	46	0	2	217	82	17	8	3	3	4	.245	.278	.418	.696
7	Graig Nettles G. Nettles	52	181	17	40	5	1	5	27	19	1	21	0	1	206	62	11	0	5	0	5	.221	.291	.343	.634
8	David Freese D. Freese	51	174	21	49	15	1	8	30	19	2	47	0	1	196	90	24	0	1	2	8	.282	.357	.517	.874
9	Evan Longoria E. Longoria	51	180	21	32	8	0	10	26	14	1	63	1	0	197	70	18	1	1	0	6	.178	.240	.389	.629
10	Matt Williams M. Williams	51	190	23	47	9	0	6	28	19	2	41	1	0	214	74	15	1	2	0	2	.247	.319	.389	.709
11	Josh Donaldson J. Donaldson	50	186	21	46	12	0	5	16	22	3	55	1	0	211	73	17	0	0	2	4	.247	.336	.392	.729
12	José Ramírez J. Ramírez	45	167	17	40	10	0	4	19	20	1	33	2	2	190	62	14	0	2	7	2	.240	.321	.371	.692
13	Ron Cey R. Cey	45	161	22	42	8	0	7	27	25	1	29	1	0	189	71	15	1	1	3	2	.261	.362	.441	.803
14	Kris Bryant K. Bryant	44	170	18	43	8	1	7	18	14	1	55	1	0	185	74	16	0	0	0	3	.253	.314	.435	.749
15	Sal Bando S. Bando	44	159	21	39	9	1	5	13	18	2	32	0	1	183	65	15	3	1	2	2	.245	.328	.409	.737
16	George Brett G. Brett	43	166	30	56	8	5	10	23	17	0	20	2	3	184	104	23	0	1	6	4	.337	.397	.627	1.023
17	Mike Moustakas M. Moustakas	42	161	17	34	5	0	6	18	9	1	31	0	0	173	57	11	1	1	3	2	.211	.256	.354	.610
18	Pablo Sandoval P. Sandoval	42	157	21	53	13	0	6	20	10	3	24	0	0	171	84	19	0	1	3	7	.338	.386	.535	.921
19	Scott Rolen S. Rolen	39	141	18	31	7	0	5	12	15	2	34	0	1	159	53	12	0	1	0	5	.220	.302	.376	.678
20	Wade Boggs W. Boggs	39	154	15	42	9	1	2	16	16	0	20	0	0	174	59	12	2	2	1	6	.273	.337	.383	.720
21	Brooks Robinson B. Robinson	39	145	17	44	8	0	5	21	6	0	9	0	2	156	67	13	1	4	1	3	.303	.323	.462	.785
22	Pedro Feliz P. Feliz	37	108	7	22	3	2	2	9	4	0	21	0	0	112	35	7	0	0	0	3	.204	.232	.324	.556
23	Austin Riley A. Riley	36	142	13	33	5	0	5	16	7	1	54	0	0	150	53	10	0	0	1	0	.232	.273	.373	.647
24	Bill Mueller B. Mueller	36	145	14	34	8	0	1	4	13	1	19	0	1	160	45	9	1	0	2	8	.234	.302	.310	.612
25	Mike Schmidt M. Schmidt	36	140	19	33	9	0	4	16	15	0	26	1	1	158	54	13	0	3	2	1	.236	.304	.386	.690