Between the 2001 and 2009 seasons, the Kansas City Royals had the worst record by a team, with a record of 595-863.

	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	595-863	.408	1,458	595	863	50,050	6,563	13,222	2,614	343	1,220	6,180	4,042	555	9,015	790	375	55,445	20,182	4,177	392	406	258	1,197	.264	.324	.403	.727
2	Pirates	612-843	.421	1,455	612	843	49,537	6,197	12,741	2,564	270	1,314	5,910	4,314	659	9,938	684	333	55,492	19,787	4,148	590	392	372	1,088	.257	.323	.399	.722
3	Orioles	624-832	.429	1,458	624	832	50,333	6,715	13,413	2,688	219	1,449	6,400	4,396	507	8,555	938	363	55,993	20,886	4,356	333	424	276	1,169	.266	.329	.415	.744
4	Rays	625-831	.429	1,456	625	831	49,887	6,572	13,052	2,612	322	1,449	6,265	4,467	509	10,078	1,243	441	55,580	20,655	4,383	307	410	280	1,019	.262	.326	.414	.740
5	Nationals	644-813	.442	1,457	644	813	49,194	6,160	12,569	2,672	265	1,265	5,853	4,831	520	9,767	819	405	55,620	19,566	4,202	702	373	472	1,209	.255	.326	.398	.724
6	Tigers	650-808	.446	1,458	650	808	50,214	6,713	13,315	2,508	401	1,548	6,408	4,190	471	9,665	746	380	55,678	21,269	4,457	389	414	253	1,129	.265	.325	.424	.749
7	Reds	666-792	.457	1,459	666	792	49,694	6,617	12,647	2,595	191	1,709	6,313	5,026	581	10,883	850	339	56,279	20,751	4,495	636	342	417	1,058	.254	.328	.418	.746
8	Brewers	668-789	.458	1,457	668	789	49,414	6,507	12,641	2,646	263	1,645	6,232	4,769	637	11,023	819	343	55,755	20,748	4,554	558	377	422	1,131	.256	.327	.420	.747
9	Rockies	687-772	.471	1,459	687	772	50,047	7,351	13,616	2,796	369	1,593	6,971	5,117	509	10,234	839	382	56,807	21,929	4,758	738	396	414	1,135	.272	.343	.438	.781
10	Padres	693-766	.475	1,459	693	766	49,784	6,328	12,729	2,495	285	1,321	6,020	5,181	432	10,069	723	297	56,319	19,757	4,101	504	418	368	1,145	.256	.329	.397	.725
11	Rangers	705-753	.484	1,458	705	753	50,766	7,620	13,688	2,865	270	1,982	7,290	4,660	517	10,156	731	252	56,657	23,039	5,117	281	433	292	1,080	.270	.335	.454	.788
12	Diamondbacks	720-738	.494	1,458	720	738	49,784	6,590	12,871	2,698	358	1,514	6,306	5,002	452	9,851	704	297	56,217	20,827	4,570	561	418	464	1,085	.259	.329	.418	.748
13	Mets	721-735	.495	1,456	721	735	49,555	6,488	12,859	2,527	271	1,435	6,149	4,759	482	9,379	1,089	345	55,845	20,233	4,233	658	391	497	1,135	.259	.328	.408	.736
14	Blue Jays	722-735	.496	1,457	722	735	50,348	7,042	13,438	2,880	276	1,552	6,711	4,653	591	9,271	669	269	56,275	21,526	4,708	224	459	280	1,225	.267	.333	.428	.761
15	Indians	726-732	.498	1,458	726	732	50,214	7,242	13,411	2,836	252	1,659	6,939	4,982	637	10,070	661	354	56,632	21,728	4,747	364	435	328	1,178	.267	.338	.433	.771
16	Marlins	732-725	.502	1,457	732	725	49,716	6,717	13,147	2,725	303	1,495	6,360	4,720	598	10,317	974	423	56,055	20,963	4,523	627	394	451	1,071	.264	.333	.422	.755
17	Cubs	742-714	.510	1,456	742	714	49,937	6,729	13,181	2,693	261	1,657	6,421	4,685	440	9,857	684	305	56,130	21,367	4,611	684	384	423	1,165	.264	.330	.428	.758
18	Mariners	746-712	.512	1,458	746	712	50,579	6,794	13,726	2,565	259	1,335	6,427	4,418	480	8,843	997	358	56,284	20,814	4,159	370	437	413	1,143	.271	.333	.412	.745
19	Giants	758-697	.521	1,456	758	697	49,619	6,562	13,013	2,648	332	1,434	6,231	4,840	466	8,806	661	290	56,002	20,627	4,414	665	412	676	1,195	.262	.331	.416	.747
20	Astros	760-697	.522	1,458	760	697	49,557	6,710	12,976	2,609	270	1,564	6,405	4,827	585	9,456	776	345	56,042	20,817	4,443	676	397	423	1,174	.262	.332	.420	.752
21	White Sox	762-697	.522	1,459	762	697	49,630	7,147	13,109	2,511	192	1,938	6,877	4,636	536	9,141	841	413	55,628	21,818	4,641	412	414	251	1,164	.264	.331	.440	.771
22	Dodgers	776-682	.532	1,458	776	682	49,820	6,526	13,077	2,452	293	1,401	6,226	4,693	508	9,096	932	381	55,977	20,318	4,146	587	369	453	1,186	.262	.330	.408	.738
23	Phillies	785-672	.539	1,457	785	672	50,210	7,270	13,228	2,753	308	1,744	6,926	5,568	588	10,271	1,030	270	57,331	21,829	4,805	554	411	570	1,021	.263	.341	.435	.776
24	Twins	794-665	.544	1,459	794	665	50,357	6,973	13,713	2,690	334	1,355	6,568	4,593	485	8,870	937	409	56,245	21,136	4,379	357	453	380	1,270	.272	.336	.420	.756
25	Braves	797-659	.547	1,457	797	659	50,134	7,063	13,469	2,732	260	1,612	6,757	4,997	447	9,647	639	289	56,637	21,557	4,604	643	416	473	1,225	.269	.338	.430	.768