Since 1950, the Miami Marlins have the worst record by a team, with a record of 2327-2748.

	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	Marlins	2327-2748	.459	5,075	2,327	2,748	172,506	21,348	43,945	8,364	984	4,618	20,242	15,598	1,837	38,404	3,262	1,300	192,941	68,131	13,966	1,721	1,279	1,203	3,814	.255	.321	.395	.716
2	Rockies	2333-2751	.459	5,084	2,333	2,751	174,585	25,110	47,138	9,310	1,313	5,741	23,879	16,016	1,585	37,868	3,063	1,372	195,551	76,297	16,364	2,005	1,360	1,209	3,874	.270	.334	.437	.772
3	Padres	4164-4744	.467	8,910	4,164	4,744	301,199	36,105	75,095	13,286	1,762	7,274	33,952	28,665	2,128	59,600	6,017	2,607	337,960	113,727	22,322	3,716	2,252	2,687	6,510	.249	.317	.378	.694
4	Rangers	4849-5337	.476	10,192	4,849	5,337	347,890	45,831	89,699	15,982	1,893	10,213	43,306	32,935	2,704	65,337	5,961	2,852	389,328	140,106	28,088	2,964	2,835	2,252	7,802	.258	.324	.403	.727
5	Royals	4242-4655	.477	8,899	4,242	4,655	304,390	38,899	79,943	14,941	2,292	7,016	36,714	26,033	2,465	52,244	7,103	2,903	337,937	120,516	24,249	2,374	2,675	1,870	6,792	.263	.323	.396	.719
6	Mariners	3631-3981	.477	7,614	3,631	3,981	259,730	33,797	66,727	12,434	1,260	7,748	32,109	24,615	2,358	49,877	5,038	2,173	290,730	104,925	21,442	1,949	2,078	1,666	5,689	.257	.324	.404	.728
7	Cubs	5675-6197	.478	11,900	5,675	6,197	405,631	51,351	103,348	18,298	2,726	11,356	48,386	37,845	3,042	75,724	5,936	3,075	454,165	161,166	32,380	4,733	2,914	3,523	8,747	.255	.321	.397	.718
8	Pirates	5679-6193	.478	11,890	5,679	6,193	405,887	50,089	104,713	18,698	3,180	9,484	47,178	35,715	3,233	73,470	6,665	3,276	452,908	158,223	31,362	4,955	3,118	3,701	8,787	.258	.321	.390	.711
9	Nationals	4295-4604	.483	8,903	4,295	4,604	301,092	37,295	76,386	14,744	1,792	7,618	35,055	28,294	2,637	57,296	6,557	2,784	338,192	117,568	24,154	3,880	2,289	2,882	6,513	.254	.321	.390	.711
10	Mets	4857-5172	.484	10,037	4,857	5,172	339,574	41,418	84,846	15,159	1,819	8,603	39,003	32,473	2,875	65,088	5,903	2,737	381,537	129,452	25,581	3,989	2,626	3,145	7,475	.250	.318	.381	.700
11	Athletics	5779-6111	.486	11,904	5,779	6,111	403,053	52,111	101,218	17,919	2,237	11,159	49,025	41,380	3,181	72,945	7,332	3,208	454,400	157,088	31,315	3,680	3,106	2,272	9,203	.251	.323	.390	.713
12	Twins	5784-6100	.487	11,900	5,784	6,100	406,842	53,172	106,042	19,083	2,793	10,316	50,075	39,077	3,331	69,834	5,779	3,082	456,023	161,659	32,192	3,603	3,170	2,664	9,737	.261	.328	.397	.725
13	Brewers	4343-4561	.488	8,908	4,343	4,561	302,376	39,597	77,414	14,427	1,756	8,724	37,515	29,111	2,717	59,058	6,007	2,736	339,790	121,525	24,907	3,166	2,420	2,160	6,616	.256	.325	.402	.726
14	Diamondbacks	2118-2219	.488	4,337	2,118	2,219	147,973	19,828	37,699	7,739	1,069	4,636	18,896	14,415	1,431	32,748	2,515	906	166,353	61,484	13,444	1,326	1,208	1,091	3,096	.255	.324	.416	.740
15	Rays	2126-2209	.490	4,335	2,126	2,209	147,369	19,273	37,394	7,458	850	4,522	18,335	14,012	1,681	33,563	3,239	1,230	164,961	60,118	12,830	740	1,159	686	3,034	.254	.323	.408	.731
16	Tigers	5834-6056	.491	11,907	5,834	6,056	406,332	53,413	104,962	18,071	2,772	11,867	50,513	39,880	2,946	72,271	5,315	2,939	455,854	164,178	32,710	3,586	3,110	2,449	9,271	.258	.327	.404	.731
17	Angels	5051-5148	.495	10,202	5,051	5,148	346,136	44,152	88,552	15,313	1,812	9,241	41,546	32,363	2,832	62,886	6,053	3,104	387,646	135,212	26,366	3,540	2,775	2,484	7,885	.256	.322	.391	.713
18	Phillies	5909-5976	.497	11,899	5,909	5,976	404,856	51,563	103,231	18,688	2,951	10,502	48,476	39,967	3,152	75,591	6,933	2,917	455,644	159,327	32,141	4,651	3,018	3,740	8,567	.255	.325	.394	.718
19	Orioles	5912-5955	.498	11,880	5,912	5,955	404,427	51,932	103,289	18,362	1,958	11,795	49,115	39,857	3,051	70,845	5,606	2,785	454,223	160,952	32,115	3,779	3,109	2,576	9,587	.255	.325	.398	.723
20	Blue Jays	3796-3818	.499	7,617	3,796	3,818	260,960	35,215	67,864	13,562	1,493	8,281	33,404	24,209	2,429	49,071	4,581	1,964	291,231	109,255	23,336	1,504	2,129	1,404	5,940	.260	.326	.419	.745
21	White Sox	5958-5924	.501	11,906	5,958	5,924	404,467	52,387	104,511	17,841	2,509	10,667	49,414	38,254	3,584	68,183	7,076	3,488	453,956	159,371	31,017	4,423	3,228	2,462	9,196	.258	.326	.394	.720
22	Astros	5045-4994	.503	10,044	5,045	4,994	340,850	42,827	86,889	15,926	2,173	8,446	40,307	32,390	2,909	63,052	7,163	3,136	382,897	132,499	26,545	4,030	2,718	3,145	7,424	.255	.323	.389	.711
23	Reds	6038-5846	.508	11,896	6,038	5,846	405,041	53,097	104,277	19,096	2,426	11,611	50,006	39,415	3,209	75,907	8,151	3,412	455,561	163,058	33,133	4,854	3,042	3,648	8,515	.257	.326	.403	.729
24	Guardians	6037-5832	.509	11,881	6,037	5,832	405,091	53,607	105,241	18,570	2,127	11,412	50,576	39,790	3,238	69,210	6,782	3,391	455,473	162,301	32,109	3,994	3,360	2,549	9,262	.260	.328	.401	.729
25	Giants	6170-5725	.519	11,902	6,170	5,725	404,674	52,020	103,107	17,886	2,739	11,119	48,830	39,628	3,038	72,856	6,213	3,148	455,511	159,828	31,744	5,152	3,019	4,019	8,806	.255	.324	.395	.719