Since 2015, the Chicago White Sox have the worst winning percentage by a team, winning 43.3 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	White Sox	.433	709	927	1,636	55,472	6,767	13,729	2,626	225	1,710	6,479	4,365	628	14,108	762	290	61,063	21,935	4,561	247	351	141	1,208	.247	.308	.395	.703
2	Rockies	.434	710	926	1,636	55,806	7,574	14,354	2,903	386	1,872	7,260	4,709	485	14,425	774	317	61,752	23,645	5,161	362	390	270	1,213	.257	.318	.424	.742
3	Marlins	.439	717	917	1,634	55,330	6,530	13,744	2,506	269	1,507	6,216	4,424	599	13,644	961	332	61,055	21,309	4,282	335	367	247	1,250	.248	.309	.385	.694
4	Tigers	.449	734	899	1,633	55,333	6,809	13,664	2,628	367	1,666	6,526	4,634	517	14,298	699	279	61,007	22,024	4,661	125	398	168	1,161	.247	.309	.398	.707
5	Reds	.451	739	899	1,638	55,023	7,205	13,506	2,592	264	1,909	6,879	5,254	773	14,063	1,157	383	61,758	22,353	4,765	326	382	235	1,161	.245	.318	.406	.724
6	Royals	.451	739	898	1,637	55,361	6,856	13,895	2,715	339	1,603	6,543	4,228	588	12,526	1,216	377	60,885	22,097	4,657	258	450	168	1,150	.251	.309	.399	.708
7	Pirates	.457	747	889	1,637	55,201	6,747	13,471	2,649	306	1,508	6,432	5,036	650	13,666	887	353	61,609	21,256	4,463	331	391	285	1,123	.244	.313	.385	.698
8	Orioles	.459	751	885	1,636	55,635	7,256	13,783	2,681	199	2,108	6,953	4,575	614	14,021	721	249	61,363	23,186	4,988	153	386	147	1,125	.248	.310	.417	.727
9	Athletics	.464	760	879	1,639	55,203	7,093	13,256	2,754	226	1,972	6,783	5,196	644	13,766	772	239	61,583	22,378	4,952	152	388	151	1,250	.240	.311	.405	.716
10	Angels	.464	760	877	1,637	54,983	7,114	13,342	2,508	215	1,984	6,794	5,039	690	13,433	856	320	61,294	22,232	4,707	190	392	272	1,213	.243	.312	.404	.716
11	Rangers	.479	785	853	1,638	55,356	7,471	13,560	2,608	222	2,002	7,106	5,072	665	14,086	1,078	347	61,689	22,618	4,832	190	406	187	1,017	.245	.314	.409	.722
12	Nationals	.480	785	851	1,636	55,147	7,411	14,037	2,802	238	1,800	7,071	5,257	653	12,793	1,134	362	61,853	22,715	4,840	360	436	330	1,207	.255	.324	.412	.736
13	Diamondbacks	.482	789	848	1,637	55,746	7,658	13,910	2,861	408	1,878	7,282	5,402	611	13,731	1,071	281	62,585	23,221	5,147	354	472	283	1,138	.250	.320	.417	.737
14	Padres	.486	796	841	1,637	54,840	7,003	13,319	2,585	246	1,818	6,686	5,173	542	13,780	1,012	336	61,309	21,850	4,649	362	392	240	1,136	.243	.312	.398	.711
15	Phillies	.496	812	824	1,636	55,388	7,299	13,742	2,721	296	1,911	6,970	5,169	600	14,088	994	278	61,810	22,788	4,928	286	367	283	1,106	.248	.317	.411	.729
16	Twins	.500	818	818	1,636	55,674	7,620	13,902	2,863	254	2,088	7,279	5,246	672	13,914	645	248	62,156	23,537	5,205	156	408	198	1,133	.250	.320	.423	.742
17	Giants	.501	820	817	1,637	55,484	7,006	13,604	2,746	299	1,663	6,699	5,230	594	13,747	698	261	62,013	21,937	4,708	270	435	286	1,209	.245	.315	.395	.710
18	Mets	.514	841	795	1,636	55,109	7,248	13,586	2,656	219	2,033	6,974	5,265	870	13,440	731	237	61,866	22,779	4,908	251	371	291	1,217	.247	.320	.413	.733
19	Mariners	.515	843	794	1,637	55,234	7,231	13,363	2,520	182	2,058	6,921	5,354	796	14,417	988	345	61,942	22,421	4,760	179	379	191	1,125	.242	.316	.406	.722
20	Blue Jays	.516	845	792	1,637	55,562	7,701	14,056	2,929	160	2,170	7,382	5,409	576	13,043	701	250	62,117	23,815	5,259	178	392	149	1,305	.253	.324	.429	.752
21	Braves	.528	862	772	1,634	55,688	7,645	14,199	2,862	215	2,049	7,335	5,281	612	13,587	827	277	62,288	23,638	5,126	321	386	353	1,176	.255	.324	.424	.749
22	Red Sox	.534	874	764	1,638	56,747	8,166	14,915	3,336	246	1,967	7,759	5,308	591	13,486	932	292	63,188	24,644	5,549	127	415	302	1,239	.263	.330	.434	.764
23	Rays	.535	877	761	1,638	55,388	7,309	13,689	2,753	293	1,930	6,941	5,200	746	14,679	1,177	425	61,861	22,818	4,976	130	397	192	1,040	.247	.318	.412	.730
24	Cardinals	.535	876	760	1,636	55,098	7,340	13,753	2,716	219	1,906	7,012	5,347	738	13,355	829	288	61,921	22,625	4,841	304	434	252	1,132	.250	.322	.411	.733
25	Brewers	.538	881	756	1,637	54,905	7,390	13,430	2,597	218	1,983	7,047	5,695	622	14,744	1,287	358	61,871	22,412	4,798	278	371	282	1,200	.245	.321	.408	.729