Between the 1920 and 2020 seasons, the Tampa Bay Rays had the fewest wins by a team, with 1,726 wins.

Interpreted as:

least regular-season wins by an MLB team 1920 to 2020

	TEAM	W	L	W%	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	Rays	1,726	1,896	.477	3,622	123,382	15,999	31,557	6,243	747	3,714	15,226	11,727	1,361	27,171	2,628	1,040	138,177	50,436	10,704	708	999	623	2,628	.256	.325	.409	.734
2	Diamondbacks	1,788	1,836	.493	3,624	123,973	16,492	31,804	6,502	921	3,851	15,727	12,002	1,145	26,937	2,033	790	139,295	51,701	11,274	1,184	991	1,018	2,620	.257	.325	.417	.743
3	Marlins	2,021	2,343	.463	4,364	148,596	18,580	38,156	7,282	887	3,946	17,604	13,689	1,581	32,211	2,773	1,156	166,614	59,050	12,115	1,628	1,120	1,128	3,282	.257	.324	.397	.721
4	Rockies	2,059	2,314	.471	4,373	150,606	22,071	41,243	8,075	1,171	5,013	20,964	14,006	1,336	31,406	2,751	1,258	169,043	66,699	14,259	1,910	1,185	1,142	3,344	.274	.339	.443	.781
5	Mariners	3,246	3,655	.470	6,903	236,029	30,697	61,244	11,385	1,201	6,874	29,133	22,137	1,938	43,196	4,571	2,046	263,920	95,653	19,460	1,903	1,913	1,609	5,239	.259	.326	.405	.731
6	Blue Jays	3,415	3,486	.495	6,904	236,772	31,901	61,666	12,286	1,420	7,410	30,221	21,934	2,154	43,629	4,225	1,849	264,280	99,022	21,116	1,455	1,965	1,334	5,390	.260	.326	.418	.744
7	Padres	3,784	4,412	.462	8,198	277,293	32,900	69,176	12,116	1,683	6,490	30,891	26,198	1,874	54,106	5,552	2,473	311,029	104,128	20,289	3,597	2,067	2,581	5,987	.249	.316	.376	.692
8	Royals	3,927	4,256	.480	8,185	280,454	35,936	74,037	13,811	2,135	6,338	33,869	24,156	2,217	46,686	6,525	2,735	311,543	111,132	22,284	2,271	2,445	1,811	6,365	.264	.325	.396	.721
9	Brewers	3,942	4,248	.481	8,194	278,538	36,337	71,722	13,326	1,667	7,910	34,406	26,527	2,418	52,727	5,398	2,596	312,835	112,112	22,903	3,093	2,259	2,067	6,125	.257	.325	.403	.728
10	Nationals	4,003	4,183	.489	8,190	277,228	34,333	70,426	13,567	1,698	6,951	32,241	26,220	2,309	51,907	6,019	2,602	311,652	108,242	22,216	3,766	2,129	2,808	5,948	.254	.321	.390	.712
11	Mets	4,474	4,842	.480	9,324	315,837	38,233	79,015	14,050	1,725	7,757	35,954	30,192	2,427	59,268	5,511	2,644	354,820	119,786	23,532	3,903	2,461	3,059	6,963	.250	.318	.379	.697
12	Rangers	4,522	4,950	.477	9,478	323,807	42,714	83,893	14,910	1,810	9,373	40,326	30,789	2,470	59,267	5,493	2,722	362,658	130,542	26,093	2,919	2,673	2,189	7,375	.259	.326	.403	.729
13	Astros	4,630	4,697	.496	9,332	316,587	39,399	80,621	14,712	2,102	7,534	37,009	30,110	2,617	57,738	6,789	3,029	355,812	122,139	24,348	3,978	2,520	3,051	6,862	.255	.322	.386	.708
14	Angels	4,735	4,753	.499	9,491	322,333	41,164	82,905	14,263	1,710	8,373	38,693	30,288	2,526	56,409	5,664	2,959	361,235	125,707	24,346	3,459	2,629	2,384	7,413	.257	.323	.390	.713
15	Phillies	7,249	8,510	.460	15,797	540,260	67,722	140,217	24,773	4,166	12,102	63,257	50,668	3,610	85,721	7,965	2,802	605,301	209,628	41,041	7,929	2,834	3,638	9,395	.260	.326	.388	.714
16	Orioles	7,597	8,150	.482	15,802	539,815	70,447	140,847	24,974	3,654	13,275	66,039	53,667	3,431	80,676	7,108	2,669	607,439	212,954	41,903	7,603	2,923	2,522	10,421	.261	.330	.394	.724
17	Athletics	7,620	8,134	.484	15,797	537,612	70,715	138,761	24,332	3,891	12,875	66,105	54,889	3,622	82,586	8,474	3,100	606,504	209,500	41,098	7,443	2,938	2,220	10,136	.258	.329	.390	.719
18	Twins	7,704	8,057	.489	15,811	543,125	71,694	144,471	25,352	4,992	10,827	66,849	52,625	3,865	77,434	8,282	2,997	609,983	212,288	41,171	7,380	2,988	2,604	10,453	.266	.333	.391	.724
19	Cubs	7,756	8,011	.492	15,823	541,627	69,569	141,535	24,786	4,252	12,923	65,066	50,088	3,550	85,184	7,494	2,922	606,697	213,594	41,961	8,699	2,733	3,452	9,495	.261	.326	.394	.721
20	White Sox	7,776	7,973	.494	15,800	538,637	69,991	141,475	23,953	4,228	11,322	65,391	52,024	4,075	76,128	9,512	3,390	606,223	207,850	39,503	8,407	3,080	2,414	9,988	.263	.330	.386	.716
21	Pirates	7,823	7,930	.497	15,809	542,956	69,343	144,214	24,907	5,502	10,710	64,789	47,903	3,693	80,560	8,568	3,136	606,002	212,255	41,119	8,502	2,948	3,630	9,620	.266	.328	.391	.719
22	Braves	7,859	7,889	.499	15,798	539,557	67,978	140,139	23,604	3,679	12,655	63,592	49,805	3,249	80,174	7,274	2,961	604,204	209,066	39,938	8,884	2,709	3,571	9,922	.260	.325	.387	.712
23	Tigers	7,896	7,890	.500	15,840	543,199	74,105	144,359	25,029	4,670	13,531	69,344	55,314	3,434	80,615	7,358	2,837	612,504	219,321	43,230	7,629	2,928	2,405	10,268	.266	.336	.404	.740
24	Reds	7,930	7,839	.503	15,807	539,701	69,048	140,884	24,887	4,216	12,514	64,583	49,831	3,644	83,142	9,628	3,241	604,826	211,745	41,617	8,772	2,878	3,599	9,247	.261	.326	.392	.718
25	Indians	8,073	7,683	.512	15,795	541,307	73,107	144,308	26,049	4,007	12,907	68,534	53,372	3,691	78,312	8,050	3,250	609,511	217,092	42,963	7,980	3,161	2,415	10,061	.267	.335	.401	.736