Since 2000, the Kansas City Royals have the best record by a team in the postseason, with a record of 25-12.

	TEAM	REC	W%	G	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Royals	25-12	.676	37	25	12	1,272	174	322	57	5	30	165	98	16	261	33	10	1,415	479	92	12	17	10	24	.253	.311	.377	.687
2	Giants	50-33	.602	83	50	33	2,812	343	678	114	17	69	326	268	18	667	25	17	3,164	1,033	200	41	25	43	39	.241	.309	.367	.676
3	Red Sox	64-44	.593	108	64	44	3,768	544	962	207	14	131	522	424	39	862	50	16	4,272	1,590	352	15	26	40	99	.255	.335	.422	.757
4	Phillies	48-36	.571	84	48	36	2,716	371	627	138	13	110	354	316	38	700	69	16	3,108	1,121	261	21	17	37	54	.231	.318	.413	.731
5	Astros	75-59	.560	134	75	59	4,573	607	1,132	195	8	191	585	471	65	1,055	61	20	5,168	1,916	394	32	27	48	107	.248	.325	.419	.744
6	Rangers	33-26	.559	59	33	26	2,039	283	507	99	6	77	268	187	19	444	37	15	2,268	849	182	11	12	20	46	.249	.316	.416	.732
7	Mets	30-25	.545	55	30	25	1,845	240	430	75	7	57	232	204	32	444	31	9	2,118	690	139	16	21	19	31	.233	.317	.374	.691
8	Marlins	13-11	.542	24	13	11	831	91	194	38	4	18	88	69	12	182	11	7	927	294	60	11	4	10	16	.233	.300	.354	.654
9	White Sox	14-12	.538	26	14	12	888	116	232	44	5	31	115	79	20	190	21	9	1,006	379	80	12	7	4	24	.261	.333	.427	.760
10	Dodgers	85-73	.538	158	85	73	5,307	692	1,260	223	24	200	665	603	68	1,413	94	21	6,052	2,131	447	43	31	61	100	.237	.321	.402	.723
11	Nationals	19-17	.528	36	19	17	1,221	147	274	47	3	40	140	132	12	343	17	1	1,387	447	90	13	9	13	16	.224	.304	.366	.670
12	Yankees	94-88	.516	182	94	88	6,180	788	1,474	277	20	217	758	694	75	1,534	92	36	7,037	2,442	514	34	54	53	125	.239	.320	.395	.715
13	Diamondbacks	27-26	.509	53	27	26	1,794	219	450	69	9	61	215	169	18	460	40	12	2,016	720	139	25	10	20	39	.251	.320	.401	.721
14	Tigers	33-33	.500	66	33	33	2,229	234	529	107	4	66	222	202	25	561	25	10	2,485	842	177	22	7	21	56	.237	.307	.378	.685
15	Cardinals	69-71	.493	140	69	71	4,625	584	1,106	221	18	134	542	435	64	1,034	66	21	5,236	1,765	373	80	32	61	89	.239	.311	.382	.693
16	Mariners	17-19	.472	36	17	19	1,230	142	277	52	4	42	137	134	13	332	19	9	1,394	463	98	10	7	11	27	.225	.306	.376	.683
17	Guardians	29-33	.468	62	29	33	2,086	238	482	94	4	62	223	177	25	582	27	7	2,316	770	160	17	11	18	45	.231	.298	.369	.667
18	Blue Jays	20-23	.465	43	20	23	1,510	201	380	75	5	57	190	133	19	343	15	2	1,678	636	137	7	9	15	33	.252	.318	.421	.740
19	Rockies	9-11	.450	20	9	11	685	71	158	31	5	14	69	61	4	173	6	4	765	241	50	9	6	5	9	.231	.295	.352	.647
20	Cubs	29-36	.446	65	29	36	2,150	230	468	86	9	77	224	189	25	601	33	7	2,391	803	172	19	8	19	43	.218	.288	.373	.661
21	Rays	28-36	.438	64	28	36	2,135	253	476	79	8	95	248	184	18	641	39	14	2,349	856	182	5	7	9	43	.223	.289	.401	.690
22	Angels	21-27	.438	48	21	27	1,660	207	432	77	9	48	198	118	20	293	30	11	1,836	671	134	27	11	15	31	.260	.315	.404	.719
23	Braves	37-49	.430	86	37	49	2,907	320	662	110	11	93	311	278	25	792	34	14	3,236	1,073	214	14	12	21	44	.228	.300	.369	.669
24	Padres	14-21	.400	35	14	21	1,160	130	269	44	5	39	127	102	16	296	16	4	1,294	440	88	6	10	5	22	.232	.300	.379	.680
25	Athletics	18-29	.383	47	18	29	1,601	175	379	76	6	50	164	147	16	381	13	1	1,779	617	132	5	10	10	30	.237	.306	.385	.691