most losses by a team in mlb playoffs in a single postseason

The Tampa Bay Rays have lost the most games by a team in a postseason, with 9 losses in 2020.

	TEAM	L	SEASON	W	L%	G	W%	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Rays	9	2020	11	.450	20	.550	639	79	135	17	2	34	77	63	8	220	4	5	713	258	53	1	2	3	11	.211	.289	.404	.693
2	Astros	8	2019	10	.444	18	.556	616	71	144	25	0	25	66	66	2	154	11	1	687	244	50	1	2	4	11	.234	.309	.396	.705
3	Dodgers	8	2018	8	.500	16	.500	546	59	112	15	2	19	56	67	7	173	13	4	627	188	36	4	3	5	11	.205	.299	.344	.643
4	Cardinals	8	2013	9	.471	17	.529	558	56	120	20	3	10	50	48	4	124	6	0	618	176	33	5	3	5	10	.215	.281	.315	.596
5	Rangers	8	2010	8	.500	16	.500	534	71	136	28	1	20	67	45	3	112	17	4	589	226	49	4	3	9	17	.255	.315	.423	.738
6	Rays	8	2008	8	.500	16	.500	536	79	135	21	4	26	78	47	3	126	24	3	592	242	51	3	3	4	13	.252	.314	.451	.766
7	Cardinals	8	2004	7	.533	15	.467	491	68	117	23	2	20	62	44	6	114	7	2	554	204	45	9	4	2	7	.238	.306	.415	.722
8	Yankees	8	2003	9	.471	17	.529	583	67	146	31	1	16	65	57	8	127	11	3	656	227	48	4	4	6	13	.250	.324	.389	.713
9	Indians	8	1997	10	.444	18	.556	621	83	155	26	2	16	77	73	5	135	16	5	714	233	44	11	4	3	14	.250	.331	.375	.707
10	Blue Jays	7	2025	10	.412	17	.588	624	101	176	33	2	27	95	57	9	116	2	1	699	294	62	3	6	7	10	.282	.348	.471	.819
11	Diamondbacks	7	2023	10	.412	17	.588	575	73	146	25	2	21	72	56	3	157	23	4	649	238	48	9	6	3	10	.254	.320	.414	.734
12	Astros	7	2021	9	.438	16	.563	546	87	142	22	2	15	84	55	7	139	12	0	615	213	39	2	5	7	12	.260	.333	.390	.723
13	Astros	7	2017	11	.389	18	.611	605	78	145	33	1	27	73	60	6	129	4	1	674	261	61	1	2	8	16	.240	.314	.431	.745
14	Cardinals	7	2011	11	.389	18	.611	616	100	167	35	4	18	92	72	8	135	7	5	711	264	57	12	3	16	15	.271	.353	.429	.782
15	Rangers	7	2011	10	.412	17	.588	584	85	150	32	1	22	84	58	7	117	8	8	660	250	55	5	6	8	12	.257	.328	.428	.756
16	Astros	7	2005	7	.500	14	.500	496	61	125	27	3	12	57	51	9	99	8	2	581	194	42	18	7	12	13	.252	.329	.391	.720
17	Giants	7	2002	10	.412	17	.588	559	91	146	19	3	27	89	69	5	131	7	2	655	252	49	14	8	20	9	.261	.343	.451	.794
18	Yankees	7	2001	10	.412	17	.588	554	57	124	21	1	16	54	50	7	123	8	8	620	195	38	7	2	1	13	.224	.295	.352	.647
19	Braves	7	1999	7	.500	14	.500	484	51	117	19	2	7	49	57	4	108	19	8	559	161	28	10	4	14	14	.242	.324	.333	.657
20	Padres	7	1998	7	.500	14	.500	467	51	112	18	2	13	44	48	3	109	3	3	525	173	33	4	3	4	10	.240	.313	.370	.683
21	Braves	7	1996	9	.438	16	.563	539	80	144	23	4	17	79	60	5	111	12	8	619	226	44	8	7	6	11	.267	.342	.419	.761
22	Braves	7	1992	6	.538	13	.462	434	54	101	17	2	9	51	49	1	76	20	3	492	149	28	4	4	5	5	.233	.309	.343	.653
23	Braves	7	1991	7	.500	14	.500	478	48	116	20	5	13	48	48	3	81	15	6	542	185	38	9	4	7	7	.243	.313	.387	.700
24	Cardinals	7	1987	7	.500	14	.500	447	49	116	12	4	4	47	29	1	86	16	7	489	148	20	7	5	3	11	.260	.303	.331	.634
25	Red Sox	7	1986	7	.500	14	.500	502	68	138	22	4	11	61	47	6	84	1	0	566	201	37	7	4	5	11	.275	.342	.400	.742