who is the active leader in playoff on base percentage with at least 40 at bats

Addison Barger has the best career on-base percentage by an active player in the postseason with 40+ at-bats, with an on-base percentage of .441.

	NAME	OBP	AB	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS
1	Addison Barger A. Barger	.441	60	17	8	22	4	0	3	9	8	0	12	0	0	68	35	7	0	0	0	0	.367	.583	1.025
2	Vladimir Guerrero Jr. V. Guerrero Jr.	.439	95	24	19	32	6	0	8	16	16	2	12	0	0	114	62	14	0	1	7	2	.337	.653	1.091
3	Pete Alonso P. Alonso	.429	54	16	12	15	1	0	5	11	14	1	19	2	0	70	31	6	0	1	1	2	.278	.574	1.003
4	Evan Carter E. Carter	.417	60	17	9	18	9	0	1	6	10	2	19	3	0	72	30	10	0	0	0	0	.300	.500	.917
5	Ernie Clement E. Clement	.416	73	18	13	30	6	1	1	9	1	1	5	1	0	77	41	8	0	2	0	1	.411	.562	.977
6	Fernando Tatis Jr. F. Tatis Jr.	.414	60	16	15	19	5	0	6	12	9	1	13	2	1	70	42	11	0	0	1	1	.317	.700	1.114
7	Yordan Alvarez Y. Alvarez	.393	214	60	39	63	13	3	12	41	31	5	69	0	0	252	118	28	0	2	5	1	.294	.551	.944
8	Shohei Ohtani S. Ohtani	.390	129	33	27	32	4	1	11	24	29	1	45	1	3	159	71	16	0	0	9	0	.248	.550	.940
9	Bryce Harper B. Harper	.390	208	57	42	57	14	1	17	34	38	2	56	8	1	250	124	32	1	1	4	5	.274	.596	.986
10	Juan Soto J. Soto	.389	160	43	31	45	8	0	11	30	27	2	40	2	1	191	86	19	1	1	4	1	.281	.538	.927
11	Jorge Soler J. Soler	.389	80	30	12	22	6	1	7	12	15	0	28	0	0	95	51	14	0	0	0	1	.275	.638	1.027
12	Ketel Marte K. Marte	.385	90	21	10	31	7	3	3	13	6	0	23	3	1	96	53	13	0	0	0	1	.344	.589	.974
13	Brayan Rocchio B. Rocchio	.383	42	13	6	13	2	0	2	3	5	0	10	0	0	48	21	4	1	0	0	0	.310	.500	.883
14	Rafael Devers R. Devers	.382	89	26	21	27	0	0	8	26	12	0	25	1	0	102	51	8	0	1	0	1	.303	.573	.955
15	Max Muncy M. Muncy	.381	259	79	46	56	9	0	16	37	65	4	93	4	0	328	113	25	0	0	3	4	.216	.436	.817
16	Steven Kwan S. Kwan	.380	84	20	16	27	4	0	1	4	8	0	6	3	0	92	34	5	0	0	0	1	.321	.405	.785
17	Randy Arozarena R. Arozarena	.380	161	45	33	47	6	1	12	19	17	6	52	8	2	184	91	19	0	0	2	3	.292	.565	.946
18	Christian Walker C. Walker	.377	61	19	7	14	5	0	1	7	13	2	19	6	0	77	22	6	0	1	1	0	.230	.361	.737
19	Kerry Carpenter K. Carpenter	.373	51	15	7	14	1	0	3	10	8	0	18	0	0	59	24	4	0	0	3	1	.275	.471	.843
20	Cal Raleigh C. Raleigh	.372	68	17	12	19	3	0	6	12	10	0	25	0	0	78	40	9	0	0	3	1	.279	.588	.960
21	Anthony Rendon A. Rendon	.370	117	31	16	33	8	0	5	21	18	0	19	1	0	138	56	13	0	3	3	0	.282	.479	.848
22	Alejandro Kirk A. Kirk	.369	88	23	13	24	3	0	5	13	11	3	15	0	0	103	42	8	0	1	1	2	.273	.477	.846
23	Ronald Acuña Jr. R. Acuña Jr.	.367	109	29	17	28	10	1	3	9	15	4	34	5	2	128	49	14	0	0	0	1	.257	.450	.817
24	Freddie Freeman F. Freeman	.365	299	79	38	79	17	1	16	39	42	6	66	4	0	348	146	34	0	1	5	5	.264	.488	.853
25	Corbin Carroll C. Carroll	.364	66	17	11	18	1	1	2	10	9	1	13	5	1	78	27	4	1	1	1	0	.273	.409	.773