Max Muncy has the most career bases on balls by an active player in the postseason, with 54 walks.

	NAME	BB	G	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Max Muncy M. Muncy	54	62	203	38	44	7	0	13	34	3	76	4	0	260	90	20	0	0	2	2	.217	.388	.443	.832
2	Alex Bregman A. Bregman	53	99	370	63	88	17	1	19	54	9	64	3	1	434	164	37	0	2	4	10	.238	.346	.443	.789
3	Kyle Schwarber K. Schwarber	44	69	228	42	54	6	0	21	34	4	71	5	0	278	123	27	0	2	5	4	.237	.367	.539	.906
4	Jose Altuve J. Altuve	43	105	436	89	118	21	0	27	56	2	75	9	5	484	220	48	0	3	2	15	.271	.337	.505	.841
5	Corey Seager C. Seager	42	78	299	55	76	17	1	19	48	3	79	3	0	346	152	37	0	2	3	6	.254	.350	.508	.858
6	Mookie Betts M. Betts	40	74	293	54	76	22	0	8	34	1	54	16	1	339	122	30	0	5	7	4	.259	.345	.416	.762
7	Justin Turner J. Turner	38	86	315	43	85	19	1	13	42	13	59	5	0	368	145	33	0	2	1	6	.270	.370	.460	.830
8	Aaron Judge A. Judge	36	58	220	37	45	6	0	16	34	2	86	5	1	261	99	22	0	3	1	4	.205	.318	.450	.768
9	Chris Taylor C. Taylor	36	80	227	39	56	13	2	9	26	1	72	5	1	266	100	24	1	1	0	1	.247	.351	.441	.791
10	Bryce Harper B. Harper	35	53	193	41	54	13	1	17	34	2	53	8	1	232	120	31	1	1	4	5	.280	.394	.622	1.016
11	Freddie Freeman F. Freeman	32	62	231	31	64	12	1	14	36	4	50	3	0	268	120	27	0	1	3	4	.277	.373	.519	.893
12	Yordan Alvarez Y. Alvarez	31	60	214	39	63	13	3	12	41	5	69	0	0	252	118	28	0	2	5	1	.294	.393	.551	.944
13	Carlos Correa C. Correa	31	85	323	38	91	19	0	18	63	4	84	1	0	358	164	37	0	0	2	8	.282	.352	.508	.860
14	George Springer G. Springer	31	67	276	43	74	15	0	19	38	2	74	4	1	309	146	34	0	0	1	4	.268	.346	.529	.875
15	Juan Soto J. Soto	27	43	160	31	45	8	0	11	30	2	40	2	1	191	86	19	1	1	4	1	.281	.389	.538	.927
16	Kyle Tucker K. Tucker	26	64	218	27	50	8	0	8	28	0	53	7	0	246	82	16	0	2	0	4	.229	.309	.376	.685
17	Will Smith W. Smith	25	57	210	25	42	10	1	8	29	0	49	1	0	237	78	19	0	2	4	1	.200	.283	.371	.654
18	Gleyber Torres G. Torres	25	45	172	28	46	8	0	7	25	0	32	6	0	198	75	15	0	1	0	6	.267	.359	.436	.795
19	Cody Bellinger C. Bellinger	25	69	242	29	51	7	3	9	33	0	87	14	1	267	91	19	0	0	3	1	.211	.285	.376	.661
20	Enrique Hernández E. Hernández	23	86	230	37	64	7	2	15	35	4	51	3	3	259	120	24	1	1	2	3	.278	.353	.522	.874
21	Xander Bogaerts X. Bogaerts	21	51	184	26	41	8	1	6	20	0	42	0	0	207	69	15	0	2	1	5	.223	.300	.375	.675
22	Francisco Lindor F. Lindor	20	41	156	24	41	7	1	8	21	1	42	2	3	179	74	16	1	1	4	3	.263	.348	.474	.823
23	Willy Adames W. Adames	18	35	111	7	24	7	0	2	7	1	44	2	2	130	37	9	0	0	0	1	.216	.331	.333	.664
24	Anthony Rendon A. Rendon	18	31	117	16	33	8	0	5	21	0	19	1	0	138	56	13	0	3	3	0	.282	.370	.479	.848
25	Giancarlo Stanton G. Stanton	17	41	151	25	40	6	0	18	40	0	43	2	0	172	100	24	0	4	1	4	.265	.331	.662	.994