Since 2002, the Kansas City Royals have the worst record by a team, with a record of 1629-2066.

	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	1629-2066	.441	3,695	1,629	2,066	126,165	15,865	32,717	6,395	812	3,200	15,041	9,854	1,282	25,289	2,575	912	139,141	50,336	10,407	800	1,040	546	2,848	.259	.317	.399	.716
2	Pirates	1665-2026	.451	3,692	1,665	2,026	124,966	15,254	31,213	6,223	711	3,347	14,563	11,126	1,516	28,528	1,922	836	139,699	48,899	10,281	1,169	922	779	2,658	.250	.317	.391	.708
3	Rockies	1667-2028	.451	3,695	1,667	2,028	126,389	17,517	33,357	6,732	910	4,039	16,704	11,613	1,135	29,365	1,965	835	141,421	54,026	11,681	1,341	943	840	2,771	.264	.329	.427	.757
4	Orioles	1697-1995	.460	3,693	1,697	1,995	126,771	16,530	32,585	6,384	470	4,316	15,799	10,505	1,271	27,071	1,834	680	140,097	52,857	11,170	602	948	536	2,825	.257	.318	.417	.735
5	Marlins	1703-1986	.462	3,689	1,703	1,986	125,275	15,390	31,747	6,126	703	3,438	14,602	10,994	1,350	28,935	2,274	865	139,736	49,593	10,267	1,225	892	855	2,779	.253	.318	.396	.714
6	Tigers	1742-1949	.472	3,691	1,742	1,949	126,459	16,385	32,845	6,274	850	3,818	15,682	10,778	1,141	28,173	1,606	725	140,024	52,273	10,942	655	991	628	2,842	.260	.321	.413	.735
7	Reds	1746-1949	.473	3,696	1,746	1,949	125,054	16,361	31,269	6,191	545	4,232	15,629	12,205	1,573	29,595	2,342	871	140,983	51,246	10,968	1,272	879	827	2,581	.250	.322	.410	.732
8	White Sox	1756-1939	.475	3,695	1,756	1,939	125,642	16,322	32,042	6,023	500	4,216	15,647	10,568	1,416	27,554	1,995	887	139,294	51,713	10,739	759	909	490	2,844	.255	.318	.412	.729
9	Padres	1771-1923	.479	3,694	1,771	1,923	124,542	15,398	30,748	5,946	664	3,535	14,634	12,021	1,157	28,575	2,236	789	139,800	48,627	10,145	1,124	956	771	2,659	.247	.317	.390	.707
10	Nationals	1773-1919	.480	3,692	1,773	1,919	124,774	16,045	31,747	6,406	600	3,697	15,270	11,898	1,363	27,460	2,320	867	140,303	50,444	10,703	1,323	945	919	2,806	.254	.324	.404	.728
11	Diamondbacks	1781-1913	.482	3,694	1,781	1,913	125,871	16,681	31,869	6,654	901	3,884	15,914	12,239	1,204	28,482	2,140	747	141,435	51,977	11,439	1,091	1,030	899	2,660	.253	.323	.413	.736
12	Mariners	1803-1890	.488	3,693	1,803	1,890	125,773	15,799	31,509	5,928	515	3,825	15,035	11,284	1,382	28,129	2,271	832	140,015	49,942	10,268	664	912	679	2,644	.251	.317	.397	.714
13	Rangers	1828-1868	.495	3,696	1,828	1,868	126,680	17,792	32,825	6,462	603	4,548	16,954	11,367	1,349	27,969	2,284	799	141,065	54,137	11,613	655	1,014	619	2,593	.259	.324	.427	.752
14	Mets	1845-1848	.500	3,693	1,845	1,848	125,199	16,181	31,555	6,244	620	3,895	15,457	11,936	1,513	27,432	2,273	719	140,736	50,724	10,759	1,164	924	952	2,747	.252	.322	.405	.728
15	Blue Jays	1852-1841	.501	3,693	1,852	1,841	126,156	17,340	32,433	6,831	519	4,463	16,565	11,903	1,305	26,771	1,698	632	140,867	53,691	11,813	500	1,003	514	2,972	.257	.325	.426	.751
16	Brewers	1857-1839	.502	3,696	1,857	1,839	124,778	16,413	31,312	6,289	620	4,237	15,673	12,147	1,534	29,952	2,575	832	140,446	51,552	11,146	1,109	878	833	2,793	.251	.323	.413	.736
17	Cubs	1859-1834	.503	3,694	1,859	1,834	125,641	16,578	31,827	6,457	665	4,148	15,787	11,946	1,452	29,198	1,888	767	141,041	52,058	11,270	1,119	883	830	2,715	.253	.323	.414	.738
18	Athletics	1865-1830	.505	3,695	1,865	1,830	125,550	16,433	31,142	6,421	536	3,976	15,664	12,520	1,296	27,300	1,807	575	140,827	50,563	10,933	479	982	522	2,892	.248	.320	.403	.723
19	Twins	1866-1829	.505	3,695	1,866	1,829	126,618	17,050	32,803	6,601	682	3,867	16,190	11,786	1,300	27,149	1,861	754	141,369	52,369	11,150	642	1,023	680	2,867	.259	.326	.414	.740
20	Rays	1866-1827	.505	3,693	1,866	1,827	125,377	16,505	31,621	6,361	736	3,987	15,717	11,999	1,480	29,316	2,848	1,015	140,428	51,415	11,084	562	1,010	591	2,496	.252	.322	.410	.733
21	Guardians	1900-1790	.515	3,690	1,900	1,790	125,550	16,930	32,152	6,740	566	3,925	16,132	12,148	1,455	27,011	2,247	800	140,941	51,799	11,231	735	1,053	711	2,781	.256	.326	.413	.739
22	Astros	1904-1788	.516	3,693	1,904	1,788	125,493	16,713	32,203	6,450	562	4,160	15,945	11,692	1,355	26,956	2,126	815	140,518	52,257	11,172	1,016	962	710	2,917	.257	.324	.416	.741
23	Giants	1906-1786	.516	3,693	1,906	1,786	125,495	15,864	31,837	6,409	768	3,443	15,078	11,605	1,197	26,696	1,673	682	140,490	50,111	10,620	1,176	1,017	1,100	2,896	.254	.320	.399	.720
24	Phillies	1909-1784	.517	3,693	1,909	1,784	126,230	16,989	32,105	6,416	728	4,164	16,213	12,452	1,419	28,526	2,337	616	142,059	52,469	11,308	1,064	894	1,040	2,560	.254	.326	.416	.742
25	Angels	1910-1783	.517	3,693	1,910	1,783	125,859	16,923	32,558	6,210	596	3,953	16,093	11,084	1,320	25,979	2,480	957	140,013	51,819	10,759	726	1,024	799	2,852	.259	.323	.412	.735