Between the 1995 and 2004 seasons, the Tampa Bay Devil Rays had the worst winning percentage by a team, winning 39.9 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	.399	451	680	1,131	38,911	4,899	10,156	1,976	234	954	4,647	3,376	375	7,376	774	349	43,246	15,462	3,164	291	293	205	861	.261	.324	.397	.721
2	Tigers	.401	641	959	1,600	54,697	7,230	14,134	2,696	376	1,710	6,873	4,940	518	10,770	1,016	546	61,021	22,712	4,782	396	470	263	1,203	.258	.323	.415	.738
3	Royals	.434	693	905	1,598	55,207	7,593	14,793	2,742	374	1,439	7,137	4,953	547	9,411	1,255	525	61,734	22,600	4,555	513	514	298	1,226	.268	.331	.409	.741
4	Brewers	.440	703	896	1,600	54,726	7,292	14,179	2,812	296	1,614	6,941	5,505	605	11,159	940	444	61,866	22,425	4,722	605	425	384	1,238	.259	.331	.410	.741
5	Pirates	.442	707	892	1,600	54,501	7,079	14,101	2,789	347	1,446	6,695	4,925	695	10,741	1,055	488	61,254	21,922	4,582	710	423	391	1,086	.259	.326	.402	.728
6	Expos	.458	733	869	1,602	54,217	6,904	13,986	3,001	315	1,514	6,518	4,736	515	10,197	950	466	60,624	22,159	4,830	789	367	508	1,211	.258	.322	.409	.730
7	Phillies	.474	759	842	1,601	54,824	7,282	14,310	2,942	344	1,483	6,882	5,789	475	10,794	1,034	378	62,197	22,389	4,769	654	455	481	1,156	.261	.334	.408	.743
8	Rockies	.476	762	840	1,602	55,493	8,756	15,746	3,051	415	1,992	8,295	5,346	546	10,215	1,073	518	62,585	25,603	5,458	745	455	433	1,294	.284	.350	.461	.811
9	Marlins	.478	765	835	1,600	54,482	7,100	14,188	2,715	334	1,449	6,708	5,379	572	10,782	1,232	545	61,494	21,918	4,498	615	446	434	1,218	.260	.331	.402	.733
10	Twins	.478	765	834	1,600	55,483	7,640	15,111	3,106	375	1,383	7,187	5,096	559	10,090	1,154	540	61,905	23,116	4,864	271	496	348	1,404	.272	.337	.417	.754
11	Orioles	.479	767	834	1,604	55,225	7,866	14,764	2,873	225	1,849	7,496	5,496	585	9,196	983	448	62,230	23,634	4,947	404	520	344	1,302	.267	.337	.428	.765
12	Cubs	.481	771	832	1,603	54,740	7,490	14,177	2,717	303	1,845	7,112	5,361	459	11,143	816	388	61,787	23,035	4,865	794	433	483	1,216	.259	.328	.421	.749
13	Blue Jays	.482	772	829	1,602	55,443	7,815	14,681	3,072	298	1,858	7,442	5,227	706	10,784	1,039	396	62,127	23,923	5,228	291	460	318	1,234	.265	.333	.431	.765
14	Padres	.488	781	821	1,602	54,759	7,342	14,261	2,695	268	1,456	6,940	5,845	433	10,751	1,085	470	61,995	21,860	4,419	485	473	426	1,291	.260	.334	.399	.733
15	Reds	.492	789	814	1,604	54,702	7,504	14,211	2,844	291	1,762	7,126	5,551	556	11,441	1,286	497	61,920	22,923	4,897	694	417	445	1,164	.260	.332	.419	.751
16	Rangers	.499	800	802	1,603	55,819	8,578	15,438	3,056	299	2,092	8,185	5,562	478	10,237	800	385	62,746	25,368	5,447	353	534	369	1,269	.277	.344	.454	.799
17	Mets	.500	801	800	1,601	54,496	7,204	14,172	2,688	251	1,556	6,824	5,437	505	10,472	860	458	61,606	22,030	4,495	720	448	494	1,269	.260	.330	.404	.735
18	Angels	.507	812	790	1,602	55,476	7,868	15,126	2,814	285	1,702	7,455	5,219	528	9,476	999	502	62,141	23,616	4,801	456	462	376	1,237	.273	.338	.426	.764
19	Diamondbacks	.507	575	559	1,134	38,893	5,334	10,218	1,971	297	1,214	5,079	3,814	358	7,355	599	275	43,807	16,425	3,482	419	323	353	831	.263	.332	.422	.754
20	White Sox	.510	816	784	1,603	55,057	8,358	15,059	2,886	302	1,968	7,964	5,580	455	9,177	1,030	440	62,116	24,453	5,156	494	530	346	1,265	.274	.342	.444	.786
21	Athletics	.533	854	747	1,601	55,060	8,244	14,445	2,914	207	2,001	7,840	6,413	600	10,604	691	301	62,863	23,776	5,122	331	459	356	1,290	.262	.343	.432	.775
22	Cardinals	.535	856	744	1,601	54,628	7,849	14,513	2,833	290	1,829	7,453	5,637	565	10,887	1,116	460	62,058	23,413	4,952	742	486	553	1,207	.266	.338	.429	.766
23	Dodgers	.536	858	744	1,602	54,578	7,145	14,090	2,411	286	1,709	6,789	5,081	467	10,540	1,148	468	61,265	22,200	4,406	742	397	441	1,153	.258	.324	.407	.731
24	Mariners	.540	865	736	1,601	55,507	8,573	15,330	2,976	257	1,963	8,196	6,109	530	10,321	1,185	439	63,131	24,709	5,196	451	534	460	1,222	.276	.350	.445	.796
25	Astros	.542	869	733	1,602	54,885	8,116	14,728	2,985	305	1,707	7,662	6,092	750	10,782	1,252	511	62,941	23,444	4,997	708	506	558	1,285	.268	.347	.427	.774