Between the 2009 and 2014 seasons, the Houston Astros had the worst record by a team, with a record of 382-590.

	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	Astros	382-590	.393	972	382	590	32,797	3,691	8,105	1,575	148	802	3,479	2,648	287	7,521	668	257	36,276	12,382	2,525	329	215	161	740	.247	.307	.378	.685
2	Cubs	429-542	.442	971	429	542	32,964	3,875	8,154	1,708	177	924	3,682	2,824	332	7,565	402	205	36,657	12,988	2,809	327	210	197	720	.247	.311	.394	.705
3	Twins	446-527	.458	973	446	527	33,356	4,247	8,623	1,719	178	827	4,022	3,166	279	6,864	531	205	37,275	13,179	2,724	207	267	192	770	.259	.326	.395	.721
4	Mariners	446-526	.459	972	446	526	32,875	3,586	7,898	1,497	133	843	3,413	2,706	246	7,401	605	212	36,278	12,190	2,473	229	222	180	645	.240	.301	.371	.672
5	Marlins	447-525	.460	972	447	525	33,035	3,883	8,237	1,598	198	814	3,684	3,041	295	7,724	547	193	36,998	12,673	2,610	398	229	252	716	.249	.316	.384	.700
6	Royals	450-522	.463	972	450	522	33,538	4,067	8,917	1,715	223	732	3,869	2,576	253	6,067	794	243	36,873	13,274	2,670	234	272	177	800	.266	.321	.396	.716
7	Rockies	452-520	.465	972	452	520	33,260	4,528	8,877	1,740	273	1,037	4,308	3,074	261	7,450	620	258	37,273	14,274	3,050	405	273	246	690	.267	.331	.429	.760
8	Pirates	452-519	.465	971	452	519	32,658	3,800	8,087	1,631	198	845	3,644	2,884	330	7,585	556	261	36,465	12,649	2,674	371	222	222	711	.248	.313	.387	.700
9	Mets	453-519	.466	972	453	519	32,999	3,943	8,291	1,694	200	725	3,752	3,130	280	7,006	676	230	37,078	12,560	2,619	403	266	283	693	.251	.319	.381	.700
10	Diamondbacks	455-517	.468	972	455	517	33,149	4,198	8,394	1,769	227	938	4,009	3,147	264	7,649	562	261	37,111	13,431	2,934	312	239	276	671	.253	.321	.405	.726
11	Indians	459-513	.472	972	459	513	33,129	4,204	8,397	1,734	144	892	3,992	3,242	362	7,223	595	213	37,208	13,095	2,770	205	270	155	742	.253	.324	.395	.720
12	Padres	465-507	.478	972	465	507	32,509	3,700	7,824	1,490	196	740	3,486	3,099	302	7,526	740	237	36,531	11,926	2,426	379	242	260	659	.241	.310	.367	.677
13	White Sox	467-505	.480	972	467	505	33,073	4,136	8,458	1,505	137	1,029	3,955	2,765	384	6,705	653	297	36,672	13,324	2,671	205	245	159	775	.256	.318	.403	.721
14	Blue Jays	471-501	.485	972	471	501	33,323	4,447	8,443	1,745	138	1,212	4,238	3,029	282	6,901	575	198	37,055	14,100	3,095	168	253	164	722	.253	.319	.423	.742
15	Orioles	473-499	.487	972	473	499	33,533	4,224	8,651	1,676	99	1,121	4,046	2,690	293	6,914	414	174	36,929	13,888	2,896	168	245	170	808	.258	.316	.414	.731
16	Nationals	488-483	.503	971	488	483	32,945	4,062	8,326	1,603	170	966	3,857	3,050	318	7,572	583	205	36,945	13,167	2,739	395	237	222	701	.253	.320	.400	.720
17	Brewers	492-480	.506	972	492	480	33,056	4,322	8,529	1,685	211	1,058	4,128	2,933	442	7,150	645	226	37,065	13,810	2,954	401	233	221	719	.258	.325	.418	.742
18	Athletics	508-464	.523	972	508	464	33,077	4,276	8,262	1,684	170	885	4,041	3,272	286	6,870	685	209	37,098	12,941	2,739	175	288	144	701	.250	.320	.391	.711
19	Reds	511-461	.526	972	511	461	33,024	4,160	8,331	1,661	144	987	3,957	3,069	359	7,360	562	247	37,181	13,241	2,792	478	251	264	631	.252	.320	.401	.721
20	Red Sox	511-461	.526	972	511	461	33,705	4,786	8,986	2,029	147	1,092	4,561	3,368	352	7,210	579	173	37,877	14,585	3,268	148	304	248	783	.267	.337	.433	.769
21	Phillies	519-453	.534	972	519	453	33,341	4,218	8,424	1,637	194	966	4,038	3,002	361	6,848	621	151	37,289	13,347	2,797	352	233	292	657	.253	.319	.400	.719
22	Rangers	524-449	.539	973	524	449	33,455	4,601	8,982	1,699	167	1,083	4,363	2,815	300	6,501	760	278	37,118	14,264	2,949	254	294	202	754	.268	.328	.426	.755
23	Giants	524-448	.539	972	524	448	33,100	3,936	8,497	1,665	231	747	3,713	2,706	263	6,799	459	203	36,745	12,865	2,643	385	291	262	748	.257	.315	.389	.704
24	Angels	528-444	.543	972	528	444	33,399	4,504	8,819	1,705	178	989	4,283	2,919	299	6,810	684	273	37,142	13,847	2,872	245	280	204	779	.264	.326	.415	.741
25	Rays	530-443	.545	973	530	443	32,789	4,321	8,176	1,674	187	988	4,129	3,572	339	7,332	791	279	37,189	13,188	2,849	202	287	185	705	.249	.327	.402	.729