The Pittsburgh Pirates have 12 losses in the postseason all-time.

	TEAM	L	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	Pirates	12	8	.600	20	.400	662	63	145	22	6	15	61	40	12	134	13	6	724	224	43	7	3	5	9	.219	.275	.338	.613
2	Red Sox	19	22	.463	42	.537	1,435	187	357	77	8	35	174	144	11	311	20	10	1,621	555	120	21	10	18	25	.249	.320	.387	.707
3	Giants	12	26	.316	40	.684	1,350	163	343	48	14	35	156	119	10	269	23	18	1,500	524	97	20	1	16	20	.254	.319	.388	.707
4	Athletics	19	19	.500	38	.500	1,253	124	281	50	6	32	114	132	4	281	22	13	1,414	439	88	17	8	9	21	.224	.298	.350	.649
5	Cubs	18	11	.621	29	.379	955	95	212	36	7	27	88	75	7	253	23	11	1,059	343	70	20	2	9	15	.222	.283	.359	.642
6	White Sox	6	7	.462	13	.538	424	55	101	16	4	17	50	36	7	67	9	10	477	176	37	9	1	3	6	.238	.308	.415	.723
7	Tigers	16	11	.593	27	.407	928	79	221	36	5	23	74	81	9	207	7	12	1,028	336	64	7	3	4	19	.238	.305	.362	.667
8	Braves	25	20	.556	45	.444	1,479	148	317	47	5	45	143	153	11	394	26	14	1,668	509	97	14	11	11	20	.214	.291	.344	.635
9	Phillies	9	22	.290	31	.710	1,007	127	236	46	5	30	123	98	8	219	25	10	1,130	382	81	8	9	10	18	.234	.305	.379	.684
10	Dodgers	33	28	.541	61	.459	2,035	255	491	75	16	70	242	214	20	465	37	7	2,305	808	161	23	13	18	36	.241	.318	.397	.715
11	Reds	14	9	.609	23	.391	762	74	174	40	10	13	72	72	7	156	16	11	853	273	63	8	4	9	20	.228	.299	.358	.658
12	Guardians	17	11	.607	28	.393	933	91	209	44	3	29	86	63	16	238	16	3	1,023	346	76	8	3	6	14	.224	.284	.371	.655
13	Yankees	36	55	.396	92	.604	3,082	392	784	133	15	98	371	315	26	620	42	24	3,466	1,241	246	28	15	21	57	.254	.327	.403	.730
14	Twins	11	11	.500	22	.500	736	92	179	38	4	25	89	77	6	164	17	8	832	300	67	10	3	7	16	.243	.319	.408	.726
15	Cardinals	26	25	.510	51	.490	1,688	216	407	74	10	39	196	156	21	334	30	10	1,906	618	123	30	11	20	31	.241	.311	.366	.677
16	Orioles	8	17	.320	25	.680	852	119	206	36	1	36	115	71	6	174	10	6	943	352	73	8	6	7	17	.242	.303	.413	.716
17	Mets	12	10	.545	22	.455	729	69	150	23	4	13	65	69	7	172	16	3	822	220	40	9	8	5	11	.206	.278	.302	.580
18	Royals	10	8	.556	18	.444	609	64	131	23	4	18	63	55	6	108	19	10	683	216	45	5	8	5	9	.215	.283	.355	.638
19	Angels	10	4	.714	14	.286	477	45	104	16	1	13	43	30	2	92	8	2	516	161	30	6	1	0	4	.218	.267	.338	.604
20	Astros	15	19	.441	34	.559	1,122	144	287	42	1	51	140	108	19	272	22	9	1,265	484	94	10	6	8	27	.256	.330	.431	.761
21	Nationals	5	5	.500	10	.500	320	23	68	16	2	5	22	34	2	91	9	3	360	103	23	3	1	6	6	.213	.291	.322	.613
22	Brewers	7	7	.500	14	.500	473	62	125	26	2	14	59	44	8	116	4	0	533	197	42	5	3	3	9	.264	.335	.416	.752
23	Padres	12	4	.750	16	.250	516	45	108	20	3	15	44	47	7	138	11	3	580	179	38	2	8	1	13	.209	.280	.347	.627
24	Blue Jays	10	6	.625	16	.375	543	62	135	22	2	15	61	37	4	102	7	1	591	206	39	1	6	2	12	.249	.298	.379	.678
25	Mariners	6	4	.600	10	.400	339	36	77	16	1	14	35	29	3	78	2	5	371	137	31	0	0	1	9	.227	.294	.404	.698