Since 2005, the Kansas City Royals have the worst record by a team, with a record of 1417-1765.

	TEAM	REC	W%	G	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Royals	1417-1765	.445	3,182	1,417	1,765	108,604	13,488	28,104	5,520	695	2,730	12,809	8,338	1,070	22,202	2,230	748	119,545	43,204	8,945	647	886	455	2,469	.259	.315	.398	.713
2	Pirates	1431-1747	.450	3,179	1,431	1,747	107,626	13,081	26,767	5,378	601	2,879	12,502	9,558	1,249	25,050	1,668	699	120,169	41,984	8,858	941	795	657	2,306	.249	.315	.390	.705
3	Marlins	1438-1738	.453	3,176	1,438	1,738	107,879	13,113	27,169	5,230	592	2,964	12,457	9,308	1,169	25,665	1,837	665	120,113	42,475	8,786	1,002	755	705	2,374	.252	.316	.394	.710
4	Rockies	1446-1735	.455	3,181	1,446	1,735	108,837	14,959	28,625	5,741	793	3,461	14,277	9,857	965	25,736	1,742	703	121,610	46,335	9,995	1,137	814	702	2,348	.263	.327	.426	.753
5	Orioles	1467-1709	.462	3,176	1,467	1,709	108,854	14,157	27,841	5,427	398	3,798	13,553	9,009	1,084	23,967	1,503	549	120,198	45,458	9,623	464	787	443	2,423	.256	.317	.418	.734
6	White Sox	1496-1684	.470	3,180	1,496	1,684	108,156	13,707	27,417	5,091	430	3,513	13,141	8,901	1,242	24,402	1,749	769	119,666	43,907	9,034	604	763	419	2,466	.253	.315	.406	.721
7	Reds	1507-1674	.474	3,182	1,507	1,674	107,614	14,080	26,905	5,317	471	3,649	13,446	10,410	1,343	25,513	2,058	753	121,193	44,111	9,437	1,053	773	686	2,215	.250	.322	.410	.732
8	Nationals	1527-1652	.480	3,179	1,527	1,652	107,485	13,846	27,330	5,483	508	3,216	13,175	10,240	1,219	24,246	1,980	714	120,810	43,477	9,207	1,041	825	722	2,403	.254	.324	.404	.728
9	Diamondbacks	1534-1647	.482	3,181	1,534	1,647	108,324	14,385	27,287	5,732	767	3,389	13,710	10,532	1,061	25,229	1,900	626	121,701	44,720	9,888	905	879	737	2,250	.252	.322	.413	.735
10	Mariners	1542-1637	.485	3,179	1,542	1,637	107,947	13,389	26,682	5,040	429	3,365	12,746	9,494	1,211	24,824	1,890	688	119,933	42,675	8,834	539	742	530	2,242	.247	.313	.395	.708
11	Padres	1542-1638	.485	3,180	1,542	1,638	106,990	13,194	26,185	5,106	566	3,112	12,553	10,258	1,008	25,321	2,018	676	120,026	41,759	8,784	970	800	647	2,240	.245	.315	.390	.705
12	Tigers	1554-1623	.489	3,177	1,554	1,623	108,996	14,283	28,432	5,472	714	3,312	13,677	9,374	969	24,645	1,348	565	120,685	45,268	9,498	510	836	547	2,479	.261	.323	.415	.738
13	Athletics	1569-1610	.494	3,179	1,569	1,610	107,747	13,954	26,504	5,434	467	3,374	13,282	10,637	1,105	24,062	1,643	517	120,746	42,994	9,275	411	846	390	2,479	.246	.318	.399	.717
14	Twins	1575-1606	.495	3,181	1,575	1,606	108,762	14,571	27,977	5,582	574	3,316	13,844	10,197	1,097	23,807	1,560	598	121,448	44,655	9,472	519	873	571	2,454	.257	.325	.411	.735
15	Rangers	1583-1599	.497	3,182	1,583	1,599	108,849	15,146	28,108	5,524	504	3,820	14,413	9,737	1,141	24,523	2,060	697	121,144	46,100	9,848	559	858	498	2,248	.258	.323	.424	.747
16	Cubs	1597-1582	.502	3,180	1,597	1,582	108,027	14,220	27,283	5,534	578	3,506	13,530	10,296	1,315	25,468	1,649	682	121,259	44,491	9,618	882	739	687	2,331	.253	.323	.412	.735
17	Blue Jays	1603-1576	.504	3,179	1,603	1,576	108,408	14,781	27,706	5,832	412	3,905	14,133	10,228	1,084	23,296	1,521	556	121,005	46,077	10,149	444	841	414	2,531	.256	.324	.425	.749
18	Giants	1604-1576	.504	3,180	1,604	1,576	108,087	13,373	27,224	5,476	665	2,858	12,711	9,584	1,009	23,649	1,486	596	120,478	42,604	8,999	934	864	763	2,466	.252	.316	.394	.711
19	Mets	1616-1565	.508	3,181	1,616	1,565	107,893	14,042	27,228	5,413	552	3,387	13,420	10,340	1,313	23,973	1,983	619	121,292	43,906	9,352	940	806	802	2,315	.252	.323	.407	.730
20	Astros	1622-1555	.511	3,178	1,622	1,555	107,970	14,236	27,585	5,514	462	3,581	13,591	9,889	1,142	23,606	1,880	722	120,621	44,766	9,557	793	827	554	2,492	.255	.322	.415	.737
21	Angels	1626-1553	.511	3,179	1,626	1,553	108,075	14,367	27,650	5,287	492	3,447	13,684	9,620	1,100	23,124	2,077	792	120,224	44,262	9,226	568	861	670	2,483	.256	.321	.410	.730
22	Phillies	1640-1539	.516	3,179	1,640	1,539	108,549	14,518	27,483	5,417	633	3,587	13,854	10,423	1,240	24,921	2,036	512	121,860	44,927	9,637	884	764	852	2,176	.253	.324	.414	.737
23	Brewers	1648-1534	.518	3,182	1,648	1,534	107,361	14,309	26,925	5,418	531	3,738	13,666	10,458	1,327	26,045	2,212	694	120,809	44,619	9,687	906	757	704	2,360	.251	.323	.416	.738
24	Rays	1659-1521	.522	3,180	1,659	1,521	107,657	14,248	27,035	5,436	616	3,533	13,567	10,575	1,297	25,986	2,422	875	120,838	44,302	9,585	446	863	480	2,163	.251	.323	.412	.735
25	Guardians	1668-1509	.525	3,177	1,668	1,509	107,988	14,535	27,618	5,805	482	3,365	13,851	10,454	1,249	23,708	1,994	642	121,216	44,482	9,652	600	925	606	2,341	.256	.326	.412	.738