how many mlb teams have made playoffs with losing record

The Pittsburgh Pirates have lost 54 times in the postseason all-time.

	TEAM	L	REC	W	L%	W%	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	Pirates	54	43-54	43	.557	.443	97	3,211	332	766	145	24	56	310	262	32	564	62	26	3,571	1,127	225	50	16	35	51	.239	.301	.351	.652
2	Red Sox	93	109-93	109	.460	.540	203	6,972	916	1,751	333	58	196	859	704	62	1,377	82	43	7,864	2,788	587	80	46	72	157	.251	.323	.400	.723
3	Giants	93	100-93	100	.482	.518	195	6,524	727	1,582	246	44	132	674	565	41	1,249	90	82	7,267	2,312	422	106	31	70	105	.242	.306	.354	.660
4	Athletics	82	85-82	85	.491	.509	167	5,529	599	1,292	249	26	130	556	520	41	1,116	110	52	6,201	1,983	405	86	25	48	92	.234	.303	.359	.662
5	Cubs	77	49-77	49	.611	.389	127	4,206	446	980	182	27	97	413	355	36	948	92	54	4,694	1,507	306	84	13	29	77	.233	.297	.358	.656
6	White Sox	32	30-32	30	.516	.484	62	2,061	228	508	90	12	42	211	187	34	385	47	34	2,327	748	144	36	9	10	40	.246	.318	.363	.681
7	Tigers	67	64-67	64	.511	.489	132	4,424	476	1,037	187	16	103	448	439	44	887	66	38	4,978	1,565	306	58	13	39	95	.234	.309	.354	.663
8	Braves	109	102-109	102	.517	.483	211	7,122	829	1,703	280	32	201	795	735	49	1,616	132	57	8,038	2,650	513	86	46	78	128	.239	.313	.372	.685
9	Phillies	70	69-70	69	.504	.496	139	4,562	564	1,084	211	27	147	535	478	48	1,009	92	38	5,171	1,790	385	54	29	63	92	.238	.315	.392	.707
10	Dodgers	152	144-152	144	.514	.486	296	9,823	1,164	2,319	392	55	298	1,114	1,018	86	2,152	181	71	11,085	3,715	745	112	46	107	184	.236	.312	.378	.690
11	Reds	50	49-50	49	.505	.495	99	3,306	355	779	142	27	65	339	284	23	599	87	40	3,680	1,170	234	41	26	46	61	.236	.298	.354	.652
12	Guardians	66	65-66	65	.504	.496	131	4,404	517	1,011	187	16	130	485	436	48	1,035	90	27	4,955	1,620	333	42	25	39	87	.230	.304	.368	.672
13	Yankees	187	254-187	254	.424	.576	442	14,956	1,961	3,709	615	76	480	1,859	1,605	131	2,960	193	105	16,918	5,916	1,171	143	83	144	299	.248	.325	.396	.720
14	Twins	59	36-59	36	.621	.379	95	3,215	334	765	136	19	82	320	296	29	681	53	28	3,590	1,185	237	35	15	25	61	.238	.307	.369	.675
15	Cardinals	128	134-128	134	.489	.511	262	8,675	1,030	2,103	395	53	191	958	743	74	1,705	143	65	9,692	3,177	639	153	47	106	147	.242	.306	.366	.672
16	Orioles	49	54-49	54	.476	.524	103	3,481	408	801	141	7	104	384	332	24	694	29	23	3,883	1,268	252	21	25	34	74	.230	.300	.364	.664
17	Mets	46	59-46	59	.438	.562	105	3,612	452	854	139	13	100	425	372	41	787	69	19	4,100	1,319	252	43	32	46	65	.236	.312	.365	.677
18	Royals	37	43-37	43	.463	.538	80	2,701	334	684	116	22	59	320	236	20	525	67	37	3,012	1,021	197	25	30	23	50	.253	.315	.378	.693
19	Angels	37	27-37	27	.578	.422	64	2,210	275	575	103	10	62	264	161	25	384	34	18	2,449	884	175	36	17	20	44	.260	.315	.400	.715
20	Astros	78	83-78	83	.484	.516	161	5,490	677	1,319	219	13	205	653	568	73	1,244	83	29	6,208	2,179	437	47	30	65	128	.240	.318	.397	.715
21	Nationals	22	24-22	24	.478	.522	46	1,540	173	349	64	4	43	164	162	12	404	26	8	1,743	550	111	18	11	19	22	.227	.303	.357	.660
22	Brewers	32	23-32	23	.582	.418	55	1,818	200	439	90	6	48	187	154	20	437	23	11	2,022	685	144	14	16	17	35	.241	.305	.377	.682
23	Padres	37	25-37	25	.597	.403	62	2,053	228	491	77	8	61	214	179	21	481	25	14	2,288	767	146	15	20	11	39	.239	.304	.374	.678
24	Blue Jays	36	33-36	33	.522	.478	69	2,368	307	614	115	12	68	294	214	19	453	60	15	2,636	957	195	11	24	19	52	.259	.323	.404	.727
25	Mariners	23	18-23	18	.561	.439	41	1,425	156	332	61	4	47	149	136	12	350	27	11	1,594	542	112	14	7	13	23	.233	.304	.380	.684