Between the 1990 and 1999 seasons, the Tampa Bay Devil Rays had the lowest winning percentage by a team, winning 40.7 percent of the time.

	TEAM	W%	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Devil Rays	.407	132	192	324	11,141	1,392	2,981	539	72	256	1,307	1,017	101	2,149	193	122	12,428	4,432	867	83	86	48	284	.268	.332	.398	.730
2	Marlins	.442	472	596	1,068	36,360	4,508	9,346	1,646	222	860	4,258	3,607	360	7,177	734	342	41,015	14,016	2,728	395	293	266	818	.257	.328	.385	.713
3	Tigers	.452	702	852	1,554	53,137	7,599	13,754	2,602	282	1,818	7,211	5,881	421	10,749	958	535	60,235	22,374	4,702	335	461	341	1,132	.259	.335	.421	.756
4	Twins	.463	718	833	1,552	53,638	7,248	14,633	2,803	341	1,158	6,795	4,898	515	8,703	1,132	560	59,821	21,592	4,302	279	491	351	1,425	.273	.337	.403	.739
5	Royals	.468	725	825	1,550	53,220	6,985	14,130	2,745	400	1,202	6,560	4,839	450	8,992	1,304	631	59,479	21,281	4,347	483	487	334	1,147	.266	.329	.400	.729
6	Phillies	.471	732	823	1,555	53,275	6,846	13,829	2,635	359	1,197	6,413	5,333	398	9,929	988	354	60,106	20,773	4,191	650	450	502	1,107	.260	.329	.390	.719
7	Angels	.475	738	817	1,555	53,195	7,039	14,017	2,470	239	1,428	6,627	5,125	372	9,321	958	594	59,571	21,249	4,137	477	402	344	1,255	.264	.330	.399	.730
8	Cubs	.476	739	813	1,553	53,371	6,946	13,877	2,449	327	1,530	6,559	4,661	365	9,676	974	496	59,497	21,570	4,306	687	413	468	1,121	.260	.321	.404	.726
9	Brewers	.478	742	811	1,553	53,350	7,388	14,164	2,656	326	1,308	6,949	5,368	440	8,871	1,194	620	60,216	21,396	4,290	539	519	387	1,130	.265	.335	.401	.736
10	Rockies	.478	512	559	1,071	37,059	5,732	10,513	1,947	293	1,333	5,425	3,316	350	6,628	837	423	41,526	17,045	3,573	508	293	255	868	.284	.346	.460	.806
11	Padres	.487	758	799	1,557	53,107	6,777	13,762	2,480	260	1,359	6,356	5,112	379	9,899	1,105	518	59,693	20,839	4,099	652	443	510	1,233	.259	.326	.392	.718
12	Cardinals	.488	758	794	1,554	52,839	6,804	13,726	2,585	350	1,271	6,424	5,329	359	9,846	1,519	673	59,609	20,824	4,206	643	439	509	1,085	.260	.329	.394	.723
13	Mariners	.493	764	787	1,551	53,387	7,756	14,387	2,795	230	1,865	7,401	5,667	459	9,163	975	443	60,477	23,237	4,890	477	487	487	1,243	.269	.342	.435	.777
14	Mets	.494	767	786	1,553	52,702	6,931	13,549	2,524	267	1,399	6,552	5,200	380	9,417	960	499	59,478	20,804	4,190	712	484	505	1,097	.257	.326	.395	.720
15	Athletics	.497	773	781	1,554	52,802	7,554	13,609	2,479	194	1,729	7,127	6,289	474	9,995	1,099	476	60,501	21,663	4,402	456	480	343	1,220	.258	.339	.410	.750
16	Pirates	.498	774	779	1,554	52,843	6,922	13,762	2,692	406	1,230	6,532	5,069	468	9,763	1,157	480	59,639	20,956	4,328	761	498	473	1,060	.260	.328	.397	.724
17	Expos	.500	776	777	1,554	52,748	6,621	13,547	2,743	352	1,289	6,177	4,633	485	9,644	1,481	580	59,033	20,861	4,384	753	414	467	1,037	.257	.320	.395	.716
18	Giants	.508	790	766	1,556	53,098	7,159	13,749	2,423	319	1,515	6,740	5,377	452	10,099	1,133	537	60,164	21,355	4,257	822	415	590	1,041	.259	.330	.402	.732
19	Diamondbacks	.509	165	159	324	11,149	1,573	2,919	524	92	375	1,486	1,077	112	2,284	210	77	12,531	4,752	991	106	87	84	219	.262	.331	.426	.757
20	Orioles	.512	794	757	1,552	53,175	7,568	14,103	2,599	241	1,789	7,213	5,941	488	8,811	799	405	60,542	22,551	4,629	436	502	406	1,293	.265	.342	.424	.766
21	Dodgers	.513	797	757	1,554	52,809	6,689	13,689	2,118	294	1,364	6,268	5,005	302	9,810	1,295	579	59,365	20,487	3,776	837	412	461	1,051	.259	.325	.388	.713
22	Blue Jays	.515	801	754	1,556	53,485	7,405	14,124	2,855	343	1,634	7,029	5,211	581	9,856	1,265	452	60,140	22,567	4,832	356	507	360	1,168	.264	.333	.422	.755
23	Rangers	.519	807	747	1,555	53,791	7,946	14,691	2,792	291	1,728	7,528	5,533	376	9,859	931	455	60,666	23,249	4,811	464	502	411	1,233	.273	.342	.432	.774
24	Reds	.520	809	746	1,556	52,989	7,164	13,989	2,702	338	1,490	6,724	5,208	357	9,995	1,486	591	59,717	21,837	4,530	698	465	503	1,045	.264	.331	.412	.743
25	Astros	.523	813	742	1,555	53,015	7,078	13,870	2,734	317	1,232	6,636	5,549	571	10,072	1,518	632	60,345	20,934	4,283	742	468	584	1,095	.262	.335	.395	.730