The Detroit Tigers had the worst winning percentage by a team in 2003, winning 26.5 percent of the time.

	TEAM	W%	SEASON	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	Tigers	.265	2003	43	119	162	5,466	591	1,312	201	39	153	553	443	47	1,099	98	63	6,070	2,050	393	65	49	24	114	.240	.300	.375	.675
2	Devil Rays	.389	2003	63	99	162	5,654	715	1,501	298	38	137	678	420	56	1,030	142	42	6,212	2,286	473	32	50	46	108	.265	.320	.404	.724
3	Padres	.395	2003	64	98	162	5,531	678	1,442	257	32	128	641	565	57	1,073	76	39	6,245	2,147	417	50	42	34	142	.261	.333	.388	.721
4	Mets	.410	2003	66	95	161	5,341	642	1,317	262	24	124	607	489	54	1,035	70	31	6,007	1,999	410	78	45	42	136	.247	.314	.374	.688
5	Indians	.420	2003	68	94	162	5,572	699	1,413	296	26	158	660	466	62	1,062	86	61	6,187	2,235	480	46	41	25	128	.254	.316	.401	.717
6	Brewers	.420	2003	68	94	162	5,548	714	1,423	266	24	196	685	547	71	1,221	99	39	6,268	2,325	486	62	40	41	158	.256	.329	.419	.748
7	Reds	.426	2003	69	93	162	5,509	694	1,349	239	21	182	669	524	79	1,326	80	34	6,210	2,176	442	66	32	34	102	.245	.318	.395	.713
8	Orioles	.438	2003	71	91	163	5,665	743	1,516	277	24	152	695	431	54	902	89	36	6,241	2,297	453	51	40	32	123	.268	.323	.405	.729
9	Rangers	.438	2003	71	91	162	5,664	826	1,506	274	36	239	799	488	75	1,052	65	25	6,293	2,569	549	24	42	31	115	.266	.330	.454	.784
10	Rockies	.457	2003	74	88	162	5,518	853	1,472	330	31	198	814	619	52	1,134	63	37	6,282	2,458	559	55	38	46	140	.267	.344	.445	.790
11	Pirates	.463	2003	75	87	162	5,581	753	1,492	275	45	163	711	529	87	1,049	86	37	6,314	2,346	483	79	38	42	112	.267	.338	.420	.758
12	Angels	.475	2003	77	85	162	5,487	736	1,473	276	33	150	687	476	56	838	129	61	6,119	2,265	459	50	50	42	125	.268	.330	.413	.743
13	Royals	.512	2003	83	79	162	5,568	836	1,526	288	39	162	781	476	75	926	120	42	6,239	2,378	489	63	57	32	128	.274	.336	.427	.763
14	Expos	.512	2003	83	79	162	5,437	711	1,404	294	25	144	682	522	45	990	100	39	6,116	2,180	463	72	40	58	143	.258	.326	.401	.727
15	Diamondbacks	.519	2003	84	78	162	5,570	717	1,467	303	47	152	696	531	45	1,006	76	38	6,261	2,320	502	63	52	63	126	.263	.330	.417	.746
16	Dodgers	.525	2003	85	77	162	5,458	574	1,328	260	25	124	544	407	72	985	80	36	6,036	2,010	409	71	28	43	121	.243	.303	.368	.671
17	Cardinals	.525	2003	85	77	162	5,672	876	1,580	342	32	196	827	580	73	952	82	32	6,466	2,574	570	87	54	68	136	.279	.350	.454	.804
18	Phillies	.531	2003	86	76	162	5,543	791	1,448	325	27	166	757	651	55	1,155	72	29	6,333	2,325	518	46	38	56	120	.261	.343	.419	.762
19	White Sox	.531	2003	86	76	162	5,487	791	1,445	303	19	220	766	519	58	916	77	29	6,148	2,446	542	43	41	27	132	.263	.331	.446	.777
20	Blue Jays	.531	2003	86	76	162	5,661	894	1,580	357	33	190	853	546	90	1,081	37	25	6,364	2,573	580	11	56	40	146	.279	.349	.455	.803
21	Astros	.537	2003	87	75	162	5,583	805	1,466	308	30	191	763	557	81	1,021	66	30	6,320	2,407	529	61	38	44	125	.263	.336	.431	.767
22	Cubs	.543	2003	88	74	162	5,519	724	1,431	302	24	172	691	492	50	1,158	73	31	6,187	2,297	498	80	46	40	135	.259	.323	.416	.739
23	Twins	.556	2003	90	72	162	5,655	801	1,567	318	45	155	755	512	63	1,027	94	44	6,324	2,440	518	42	52	36	139	.277	.341	.431	.772
24	Marlins	.562	2003	91	71	162	5,490	751	1,459	292	44	157	709	515	57	978	150	74	6,185	2,310	493	82	41	44	114	.266	.333	.421	.754
25	Mariners	.574	2003	93	69	162	5,561	795	1,509	290	33	139	759	586	53	989	108	37	6,281	2,282	462	35	46	34	130	.271	.344	.410	.754