Since 1968, the Colorado Rockies have the worst winning percentage by a team, winning 45.8 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	Rockies	.458	2,353	2,787	5,140	176,500	25,358	47,633	9,407	1,324	5,809	24,118	16,159	1,600	38,383	3,096	1,388	197,639	77,115	16,540	2,012	1,368	1,209	3,923	.270	.334	.437	.771
2	Marlins	.460	2,361	2,772	5,133	174,488	21,617	44,451	8,459	997	4,681	20,499	15,780	1,851	38,842	3,311	1,311	195,141	68,947	14,137	1,727	1,295	1,209	3,845	.255	.321	.395	.716
3	Padres	.468	4,196	4,769	8,967	303,125	36,355	75,593	13,386	1,770	7,321	34,190	28,868	2,151	59,985	6,049	2,616	340,147	114,482	22,477	3,735	2,268	2,696	6,547	.249	.317	.378	.695
4	Royals	.477	4,268	4,684	8,954	306,228	39,129	80,376	15,045	2,299	7,080	36,940	26,186	2,496	52,619	7,145	2,915	339,981	121,259	24,424	2,384	2,687	1,876	6,826	.262	.323	.396	.719
5	Mariners	.478	3,666	4,005	7,673	261,739	34,072	67,224	12,514	1,263	7,837	32,370	24,800	2,391	50,393	5,104	2,184	292,982	105,775	21,614	1,960	2,092	1,680	5,728	.257	.324	.404	.729
6	Nationals	.482	4,314	4,641	8,959	303,009	37,538	76,865	14,835	1,801	7,671	35,292	28,464	2,651	57,749	6,601	2,799	340,313	118,315	24,307	3,886	2,303	2,890	6,547	.254	.321	.390	.711
7	Pirates	.484	4,408	4,702	9,117	310,783	38,725	79,838	14,939	2,181	7,498	36,563	27,696	2,769	59,707	5,963	2,732	347,403	121,633	24,618	3,601	2,554	2,921	6,561	.257	.321	.391	.712
8	White Sox	.485	4,416	4,693	9,118	310,162	40,439	80,379	14,182	1,726	8,895	38,319	28,256	2,693	56,302	5,527	2,670	346,477	124,698	24,803	2,769	2,597	1,928	7,066	.259	.324	.402	.726
9	Rangers	.485	4,423	4,691	9,119	312,009	42,034	81,328	14,744	1,656	9,382	39,745	29,603	2,544	58,781	5,578	2,612	349,246	127,530	25,782	2,492	2,598	2,040	6,987	.261	.327	.409	.736
10	Tigers	.486	4,435	4,684	9,122	311,525	41,055	80,545	14,314	2,059	9,428	38,947	29,568	2,416	59,456	4,474	2,407	348,302	127,261	25,801	2,241	2,552	1,909	6,990	.259	.325	.409	.734
11	Diamondbacks	.489	2,146	2,247	4,393	149,860	20,100	38,169	7,829	1,084	4,716	19,162	14,597	1,463	33,212	2,545	920	168,494	62,314	13,629	1,341	1,233	1,097	3,134	.255	.324	.416	.740
12	Brewers	.489	4,384	4,574	8,962	304,237	39,925	77,945	14,526	1,764	8,792	37,825	29,289	2,745	59,473	6,055	2,760	341,887	122,375	25,082	3,173	2,443	2,164	6,647	.256	.325	.402	.727
13	Rays	.490	2,150	2,242	4,392	149,317	19,532	37,894	7,539	860	4,588	18,576	14,176	1,698	34,053	3,304	1,253	167,115	60,917	12,987	749	1,175	694	3,070	.254	.323	.408	.731
14	Cubs	.491	4,472	4,638	9,120	310,833	39,987	79,540	14,561	1,889	8,878	37,735	29,311	2,514	60,327	5,032	2,459	348,646	124,513	25,328	3,605	2,383	2,790	6,663	.256	.323	.401	.723
15	Twins	.491	4,480	4,637	9,120	312,849	41,307	82,543	15,393	1,986	8,103	38,941	28,962	2,713	56,094	4,997	2,527	349,472	126,217	25,482	2,331	2,617	2,133	7,468	.264	.329	.403	.732
16	Angels	.497	4,533	4,593	9,128	310,272	40,118	79,846	13,997	1,569	8,471	37,808	28,945	2,653	56,579	5,682	2,847	347,352	122,394	24,037	2,969	2,513	2,200	7,121	.257	.324	.394	.718
17	Guardians	.497	4,527	4,573	9,103	310,747	41,322	81,184	14,947	1,586	8,705	39,050	30,101	2,625	55,362	5,955	2,789	348,830	125,418	25,238	2,596	2,761	2,036	7,200	.261	.329	.404	.733
18	Phillies	.499	4,554	4,569	9,127	310,951	40,061	79,323	14,889	2,067	8,463	37,812	30,731	2,591	61,501	6,062	2,320	350,017	123,735	25,419	3,263	2,481	3,018	6,424	.255	.325	.398	.723
19	Blue Jays	.500	3,832	3,839	7,674	262,941	35,530	68,430	13,671	1,499	8,356	33,705	24,393	2,456	49,441	4,600	1,972	293,452	110,167	23,526	1,521	2,141	1,414	5,988	.260	.326	.419	.745
20	Mets	.500	4,559	4,557	9,120	308,817	38,394	77,651	14,155	1,631	8,055	36,226	30,029	2,653	59,457	5,669	2,476	347,569	119,233	23,841	3,634	2,436	2,908	6,779	.251	.321	.386	.707
21	Orioles	.505	4,598	4,505	9,107	310,732	41,086	80,117	14,654	1,327	9,809	38,987	30,363	2,609	56,896	4,824	2,213	348,543	126,852	25,790	2,277	2,562	2,033	7,295	.258	.327	.408	.735
22	Reds	.509	4,640	4,483	9,131	310,216	40,756	79,597	14,993	1,736	9,027	38,410	30,771	2,684	62,243	7,088	2,769	349,771	125,143	25,756	3,628	2,472	2,902	6,534	.257	.327	.403	.730
23	Giants	.509	4,646	4,480	9,128	309,868	39,477	78,652	14,334	1,985	8,179	37,151	30,759	2,458	59,733	5,269	2,565	349,418	121,493	24,498	3,868	2,465	3,286	6,730	.254	.324	.392	.716
24	Athletics	.512	4,668	4,456	9,125	309,076	41,023	77,776	14,235	1,444	9,265	38,688	32,139	2,685	59,557	6,390	2,675	348,954	122,694	24,944	2,450	2,604	1,867	6,942	.252	.325	.397	.722
25	Astros	.512	4,675	4,450	9,127	310,042	39,733	79,560	14,876	1,928	7,977	37,465	29,697	2,712	58,186	6,796	2,916	348,540	122,223	24,781	3,568	2,521	2,833	6,729	.257	.325	.394	.719