Since 2004, the Kansas City Royals have the worst record by a team, with a record of 1532-1930.

	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	1532-1930	.443	3,462	1,532	1,930	118,106	14,708	30,523	6,000	739	3,011	13,972	9,121	1,201	24,049	2,371	824	130,085	47,034	9,750	707	950	496	2,673	.258	.316	.398	.714
2	Rockies	1550-1913	.448	3,463	1,550	1,913	118,439	16,254	31,137	6,261	853	3,789	15,519	10,701	1,052	28,044	1,854	768	132,319	50,471	10,903	1,251	876	754	2,566	.263	.327	.426	.753
3	Pirates	1560-1898	.451	3,459	1,560	1,898	117,061	14,213	29,128	5,840	654	3,109	13,583	10,349	1,382	27,166	1,797	765	130,682	45,603	9,603	1,029	861	702	2,507	.249	.315	.390	.705
4	Marlins	1585-1874	.458	3,459	1,585	1,874	117,503	14,370	29,659	5,712	648	3,229	13,649	10,163	1,270	27,523	2,032	738	130,855	46,354	9,589	1,089	830	750	2,590	.252	.317	.394	.711
5	Orioles	1605-1856	.464	3,461	1,605	1,856	118,735	15,529	30,439	5,946	429	4,112	14,861	9,910	1,198	26,030	1,705	620	131,235	49,579	10,487	513	879	489	2,620	.256	.318	.418	.735
6	White Sox	1626-1836	.470	3,462	1,626	1,836	117,711	15,075	29,857	5,564	458	3,890	14,451	9,759	1,344	26,434	1,879	834	130,326	48,007	9,912	680	832	451	2,669	.254	.316	.408	.724
7	Diamondbacks	1643-1819	.475	3,462	1,643	1,819	117,902	15,577	29,704	6,218	836	3,680	14,851	11,351	1,159	27,238	2,039	687	132,366	48,634	10,734	991	963	790	2,464	.252	.321	.412	.734
8	Nationals	1643-1817	.475	3,460	1,643	1,817	116,956	14,992	29,666	5,956	557	3,486	14,271	11,050	1,294	26,181	2,177	789	131,340	47,194	9,999	1,151	889	784	2,599	.254	.323	.404	.726
9	Reds	1646-1816	.475	3,463	1,646	1,816	117,135	15,347	29,277	5,786	519	3,967	14,644	11,376	1,457	27,871	2,192	794	131,920	48,002	10,272	1,117	835	735	2,424	.250	.322	.410	.732
10	Mariners	1672-1790	.483	3,462	1,672	1,790	117,783	14,654	29,238	5,495	456	3,683	13,947	10,364	1,332	26,971	2,118	754	130,898	46,694	9,634	601	818	605	2,452	.248	.314	.396	.711
11	Tigers	1685-1773	.487	3,458	1,685	1,773	118,605	15,630	30,926	5,940	797	3,656	14,974	10,252	1,066	26,862	1,477	628	131,401	49,428	10,393	561	917	587	2,652	.261	.323	.417	.740
12	Padres	1693-1770	.489	3,463	1,693	1,770	116,624	14,473	28,714	5,602	611	3,365	13,765	11,199	1,111	27,114	2,143	722	130,891	45,633	9,578	1,060	897	706	2,443	.246	.316	.391	.707
13	Athletics	1714-1747	.495	3,461	1,714	1,747	117,571	15,289	29,070	5,999	492	3,726	14,559	11,624	1,197	26,211	1,752	561	131,757	47,231	10,217	451	914	442	2,699	.247	.319	.402	.721
14	Twins	1716-1748	.495	3,464	1,716	1,748	118,463	15,865	30,444	6,073	613	3,663	15,065	11,090	1,226	25,826	1,766	669	132,291	48,732	10,349	574	938	620	2,665	.257	.325	.411	.736
15	Rangers	1731-1732	.500	3,463	1,731	1,732	118,516	16,544	30,554	6,037	549	4,178	15,753	10,616	1,250	26,614	2,229	756	131,917	50,223	10,764	591	944	556	2,406	.258	.323	.424	.747
16	Mets	1742-1720	.503	3,462	1,742	1,720	117,445	15,287	29,598	5,887	580	3,744	14,627	11,263	1,436	26,132	2,205	655	132,045	47,877	10,211	1,023	878	878	2,525	.252	.323	.408	.730
17	Blue Jays	1744-1717	.504	3,461	1,744	1,717	118,060	16,133	30,257	6,342	458	4,207	15,425	11,127	1,204	25,171	1,629	603	131,795	50,136	11,007	491	913	457	2,776	.256	.324	.425	.749
18	Giants	1751-1710	.506	3,461	1,751	1,710	117,582	14,726	29,650	5,960	721	3,169	13,996	10,699	1,135	25,534	1,572	633	131,414	46,559	9,850	1,042	956	927	2,687	.252	.318	.396	.714
19	Cubs	1753-1707	.507	3,461	1,753	1,707	117,658	15,559	29,787	6,035	626	3,902	14,817	11,173	1,387	27,481	1,826	735	132,013	48,780	10,563	965	830	746	2,504	.253	.323	.415	.738
20	Angels	1773-1689	.512	3,462	1,773	1,689	117,778	15,719	30,170	5,720	541	3,778	14,964	10,455	1,244	25,289	2,289	859	131,039	48,306	10,039	634	928	730	2,680	.256	.321	.410	.731
21	Astros	1780-1680	.514	3,461	1,780	1,680	117,566	15,555	30,074	5,995	505	3,915	14,841	10,817	1,257	25,580	2,032	772	131,445	48,824	10,415	899	906	618	2,714	.256	.323	.415	.738
22	Rays	1787-1675	.516	3,462	1,787	1,675	117,243	15,515	29,494	5,898	675	3,825	14,779	11,380	1,389	27,978	2,701	954	131,456	48,217	10,398	497	947	523	2,337	.252	.323	.411	.734
23	Brewers	1792-1670	.518	3,462	1,792	1,670	116,937	15,565	29,380	5,923	577	4,004	14,853	11,417	1,451	28,279	2,458	775	131,620	48,469	10,504	978	837	762	2,553	.251	.323	.414	.738
24	Phillies	1798-1664	.519	3,462	1,798	1,664	118,306	15,943	30,053	5,926	674	3,972	15,226	11,441	1,345	27,062	2,223	561	132,895	49,243	10,572	960	843	925	2,364	.254	.325	.416	.741
25	Guardians	1811-1648	.524	3,459	1,811	1,648	117,616	15,865	30,065	6,337	526	3,671	15,132	11,415	1,370	25,729	2,182	720	132,069	48,467	10,534	669	999	671	2,538	.256	.326	.412	.738