most mlb regular-season losses by a team from 1977 to 2022

Between the 1977 and 2022 seasons, the Pittsburgh Pirates lost the most games by a team, with 3,811 losses.

	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	3,811	3,403	.528	7,220	.472	245,448	30,545	62,809	12,140	1,649	5,984	28,892	22,227	2,304	47,816	5,008	2,323	274,967	96,199	19,773	2,964	2,024	2,222	5,143	.256	.321	.392	.713
2	Mariners	3,799	3,426	.526	7,227	.474	246,759	32,084	63,689	11,847	1,231	7,270	30,469	23,268	2,099	46,085	4,718	2,097	276,041	99,808	20,348	1,921	1,994	1,634	5,451	.258	.325	.404	.729
3	Royals	3,795	3,425	.526	7,221	.474	247,770	32,037	65,612	12,490	1,866	5,900	30,250	20,708	2,079	43,053	5,688	2,263	274,565	99,534	20,256	1,841	2,167	1,464	5,574	.265	.324	.402	.726
4	Padres	3,780	3,454	.523	7,236	.477	245,045	30,000	61,591	11,099	1,463	6,001	28,254	23,631	1,785	49,172	5,108	2,177	275,291	93,619	18,563	2,920	1,910	2,251	5,272	.251	.319	.382	.701
5	Tigers	3,761	3,463	.521	7,225	.479	247,674	33,386	64,940	11,867	1,638	7,613	31,715	23,656	1,931	47,971	3,855	2,009	277,041	102,922	21,118	1,692	2,088	1,451	5,543	.262	.329	.416	.744
6	Twins	3,722	3,505	.515	7,229	.485	248,292	33,118	65,899	12,702	1,589	6,483	31,259	22,775	2,094	44,401	4,009	1,989	277,000	101,228	20,774	1,702	2,137	1,582	5,955	.265	.330	.408	.737
7	Orioles	3,719	3,496	.515	7,219	.485	246,971	32,854	64,153	11,932	980	8,023	31,263	23,675	2,063	45,330	3,595	1,702	276,347	102,114	20,935	1,619	2,019	1,480	5,953	.260	.327	.413	.741
8	Cubs	3,699	3,517	.513	7,223	.487	246,680	31,761	63,373	11,919	1,479	7,203	30,035	22,783	2,071	49,080	4,113	1,955	276,249	99,859	20,601	2,848	1,867	2,139	5,333	.257	.323	.405	.728
9	Reds	3,665	3,562	.507	7,232	.493	245,378	31,950	62,783	12,045	1,292	7,266	30,192	24,173	2,160	49,745	5,480	2,194	276,612	99,210	20,603	2,948	1,953	2,219	5,180	.256	.326	.404	.730
10	Rangers	3,664	3,560	.507	7,228	.493	248,148	34,494	65,726	12,331	1,348	7,872	32,672	23,162	2,096	47,166	4,556	2,082	277,460	104,369	21,551	1,923	2,131	1,544	5,526	.265	.330	.421	.751
11	Nationals	3,653	3,569	.506	7,225	.494	245,068	30,794	62,743	12,494	1,504	6,426	29,017	22,671	2,129	47,485	5,519	2,234	274,812	97,523	20,424	3,044	1,900	2,378	5,289	.256	.322	.398	.720
12	Brewers	3,650	3,576	.505	7,228	.495	246,397	32,921	63,868	12,255	1,445	7,381	31,249	23,330	2,337	48,147	4,829	2,139	276,587	101,156	21,081	2,489	2,034	1,795	5,395	.259	.327	.411	.737
13	Mets	3,632	3,588	.503	7,223	.497	245,001	31,017	62,211	11,718	1,292	6,581	29,316	23,646	2,107	47,330	4,796	2,074	275,567	96,256	19,591	2,824	1,989	2,331	5,285	.254	.323	.393	.715
14	Blue Jays	3,627	3,598	.502	7,228	.498	247,803	33,522	64,585	12,878	1,445	7,872	31,793	22,930	2,260	46,089	4,373	1,904	276,499	103,969	22,195	1,473	2,033	1,361	5,638	.261	.326	.420	.746
15	Phillies	3,603	3,624	.499	7,231	.501	246,589	32,257	63,232	12,082	1,638	6,879	30,491	24,667	2,158	48,957	4,948	1,757	278,013	99,227	20,599	2,625	1,974	2,400	5,138	.256	.327	.402	.729
16	White Sox	3,601	3,617	.499	7,224	.501	246,379	33,348	64,744	11,711	1,412	7,508	31,700	22,462	2,218	44,694	4,529	2,141	275,306	101,803	20,631	2,109	2,138	1,479	5,618	.263	.327	.413	.741
17	Guardians	3,581	3,632	.496	7,215	.504	247,182	34,071	65,566	12,465	1,295	7,164	32,258	24,526	2,186	44,893	4,910	2,161	278,141	102,113	20,924	1,977	2,270	1,561	5,769	.265	.334	.413	.747
18	Angels	3,563	3,668	.493	7,231	.507	246,874	33,162	64,633	11,661	1,245	7,137	31,331	23,223	2,105	44,617	4,580	2,240	276,487	100,195	20,043	2,241	2,044	1,710	5,731	.262	.328	.406	.734
19	Athletics	3,555	3,673	.492	7,228	.508	245,436	33,078	62,151	11,705	1,111	7,482	31,261	25,724	2,128	47,192	4,717	1,974	277,142	98,524	20,298	1,728	2,126	1,361	5,633	.253	.327	.401	.728
20	Giants	3,540	3,691	.490	7,232	.510	245,873	31,481	62,848	11,706	1,579	6,593	29,710	23,971	1,928	47,458	4,258	2,128	276,908	97,491	19,878	3,154	1,982	2,640	5,318	.256	.324	.397	.721
21	Astros	3,506	3,727	.485	7,234	.515	245,827	31,795	63,339	12,166	1,494	6,532	30,057	23,576	2,226	46,854	5,582	2,348	276,509	98,089	20,192	2,854	2,026	2,193	5,301	.258	.326	.399	.725
22	Braves	3,423	3,792	.474	7,218	.526	245,402	32,227	63,195	11,798	1,206	7,273	30,521	24,087	1,844	47,564	4,178	2,081	276,182	99,224	20,277	2,993	1,856	2,229	5,519	.258	.326	.404	.731
23	Cardinals	3,372	3,846	.467	7,224	.533	245,530	32,578	64,326	12,129	1,562	6,273	30,763	23,994	2,119	45,797	5,609	2,365	276,688	98,398	19,964	2,975	2,070	2,382	5,408	.262	.330	.401	.731
24	Red Sox	3,317	3,908	.459	7,226	.541	250,552	36,236	68,414	14,246	1,328	7,771	34,412	25,561	2,250	45,010	3,225	1,534	282,167	108,629	23,345	1,543	2,261	1,928	6,208	.273	.343	.434	.776
25	Dodgers	3,295	3,935	.456	7,232	.544	245,552	31,616	63,201	11,128	1,250	6,990	29,920	23,852	1,962	46,881	4,975	2,142	276,514	97,799	19,368	3,252	1,896	2,294	5,227	.257	.326	.398	.724