The Pittsburgh Pirates have 10,891 losses all-time.

Interpreted as:

How many lost in the regular season pirates all-time?

	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	Alleghenys	39	1882	39	.500	79	.500	2,889	426	725	106	59	18		92		183			2,981	1,003	183					.251		.347
2	Alleghenys	67	1883	31	.684	98	.316	3,607	525	892	120	58	13		164		345			3,771	1,167	191					.247		.324
3	Alleghenys	78	1884	30	.722	110	.278	3,689	406	777	105	50	2		143	41	411			3,873	988	157					.211	.248	.268	.516
4	Alleghenys	55	1885	56	.495	111	.505	3,975	547	955	123	79	5	371	189	44	537			4,208	1,251	207					.240	.282	.315	.597
5	Alleghenys	57	1886	80	.416	140	.584	4,854	810	1,171	186	96	16	563	478	38	713	260		5,370	1,597	298					.241	.314	.329	.643
6	Alleghenys	69	1887	55	.556	125	.444	4,414	621	1,141	183	78	20	479	319	38	381	221		4,771	1,540	281					.258	.314	.349	.663
7	Alleghenys	68	1888	66	.507	139	.493	4,713	534	1,070	150	49	14	390	194	46	583	287		4,953	1,360	213					.227	.264	.289	.553
8	Alleghenys	71	1889	61	.538	134	.462	4,748	726	1,202	209	65	42	597	420	44	467	231		5,212	1,667	316					.253	.320	.351	.671
9	Alleghenys	113	1890	23	.831	138	.169	4,739	597	1,088	160	43	20	426	408	66	460	208		5,213	1,394	223					.230	.300	.294	.594
10	Pirates	80	1891	55	.593	137	.407	4,794	679	1,148	148	71	29	524	427	50	503	205		5,271	1,525	248					.239	.308	.318	.626
11	Pirates	73	1892	80	.477	155	.523	5,469	802	1,288	143	108	38	600	435	44	453	222		5,948	1,761	289					.236	.297	.322	.619
12	Pirates	48	1893	81	.372	131	.628	4,834	970	1,447	176	127	37	816	537	62	274	210		5,433	1,988	340					.299	.377	.411	.788
13	Pirates	65	1894	65	.500	133	.500	4,700	965	1,465	223	125	48	812	444	68	210	257		5,375	2,082	396	163				.312	.379	.443	.822
14	Pirates	61	1895	71	.462	135	.538	4,677	815	1,355	192	89	27	677	378	65	299	257		5,226	1,806	308	106				.290	.351	.386	.737
15	Pirates	63	1896	66	.488	131	.512	4,701	787	1,371	169	94	27	667	387	58	286	217		5,254	1,809	290	108				.292	.353	.385	.738
16	Pirates	71	1897	60	.542	135	.458	4,590	676	1,266	140	108	25	575	359	67	333	170		5,114	1,697	273	98				.276	.337	.370	.707
17	Pirates	76	1898	72	.514	152	.486	5,087	634	1,313	140	88	14	520	336	74	339	107		5,638	1,671	242	141				.258	.313	.328	.642
18	Pirates	73	1899	76	.490	155	.510	5,486	841	1,582	196	121	29	706	386	63	344	179		6,079	2,107	346	144				.288	.342	.384	.726
19	Pirates	60	1900	79	.432	140	.568	4,817	733	1,312	185	100	26	602	327	63	319	174		5,317	1,775	311	110				.272	.327	.368	.695
20	Pirates	49	1901	90	.353	140	.647	4,913	777	1,407	182	92	29	636	386	52	497	203		5,468	1,860	303	117				.286	.345	.379	.723
21	Pirates	36	1902	103	.259	142	.741	4,926	774	1,410	189	95	18	660	372	64	440	222		5,480	1,843	302	118				.286	.344	.374	.718
22	Pirates	49	1903	91	.350	141	.650	4,988	793	1,429	208	110	34	650	364	50	400	172		5,511	1,959	352	109				.286	.341	.393	.734
23	Pirates	66	1904	87	.431	156	.569	5,160	675	1,333	164	102	15	523	391	47	516	178		5,714	1,746	281	116				.258	.316	.338	.655
24	Pirates	57	1905	96	.373	155	.627	5,213	692	1,385	190	91	22	564	382	36	512	202		5,790	1,823	303	159				.266	.320	.350	.670
25	Pirates	60	1906	93	.392	154	.608	5,030	622	1,313	164	67	12	497	424	42	385	162		5,686	1,647	243	190				.261	.324	.327	.651
	Total	10,891		10,891	.500	21,922	.500	750,833	97,452	197,556	32,467	8,944	12,307	86,950	64,545	5,551	100,256	15,727	3,285	836,750	284,832	53,718	12,565	3,133	3,706	10,103	.263	.325	.379	.704