Since 1981, the Chicago White Sox have the lowest winning percentage by a team in a season, winning 25.3 percent of the time in 2024.

	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	White Sox	.253	2024	41	121	162	5,383	507	1,187	226	9	133	485	395	43	1,403	90	33	5,866	1,830	368	18	27	8	116	.221	.278	.340	.618
2	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
3	Rockies	.276	2025	34	89	123	4,130	463	986	202	31	128	451	316	35	1,152	65	32	4,517	1,634	361	14	22	5	94	.239	.297	.396	.693
4	Orioles	.290	2018	47	115	162	5,507	622	1,317	242	15	188	593	422	57	1,412	81	22	6,034	2,153	445	13	35	19	132	.239	.298	.391	.689
5	Tigers	.292	2019	47	114	161	5,549	582	1,333	292	41	149	556	391	48	1,595	57	20	6,039	2,154	482	9	42	14	108	.240	.294	.388	.682
6	Athletics	.309	2023	50	112	162	5,311	585	1,187	225	21	171	563	498	85	1,496	149	31	5,958	1,967	417	28	36	12	125	.223	.298	.370	.669
7	Astros	.315	2013	51	111	162	5,457	610	1,307	266	16	148	566	426	52	1,535	110	61	6,019	2,049	430	46	38	17	110	.240	.299	.375	.674
8	Diamondbacks	.315	2004	51	111	162	5,544	615	1,401	295	38	135	582	441	35	1,022	53	32	6,113	2,177	468	56	37	38	137	.253	.310	.393	.703
9	Pirates	.317	2020	19	41	60	1,932	219	425	76	6	59	210	167	11	521	16	11	2,132	690	141	7	15	6	34	.220	.284	.357	.641
10	Orioles	.321	2021	52	110	162	5,420	659	1,296	266	15	195	632	451	65	1,454	54	23	5,981	2,177	476	14	31	12	105	.239	.304	.402	.705
11	Diamondbacks	.321	2021	52	110	162	5,489	679	1,297	308	31	144	644	537	54	1,465	43	16	6,140	2,099	483	32	28	24	99	.236	.309	.382	.692
12	Tigers	.327	1996	53	109	162	5,530	783	1,413	257	21	204	741	546	29	1,268	87	50	6,202	2,324	482	48	49	26	132	.256	.323	.420	.743
13	Orioles	.333	2019	54	108	162	5,596	729	1,379	252	25	213	698	462	71	1,435	84	30	6,188	2,320	490	22	37	8	111	.246	.310	.415	.725
14	Marlins	.333	1998	54	108	162	5,558	667	1,381	277	36	114	621	525	45	1,120	115	57	6,227	2,072	427	70	29	30	121	.248	.317	.373	.690
15	Orioles	.335	1988	54	107	161	5,358	550	1,275	199	20	137	517	504	32	869	69	44	5,979	1,925	356	40	45	31	140	.238	.305	.359	.664
16	Braves	.338	1988	54	106	160	5,440	555	1,319	228	28	96	527	432	21	848	95	69	6,013	1,891	352	74	46	59	136	.242	.298	.348	.646
17	Nationals	.340	2022	55	107	162	5,434	603	1,351	252	20	136	579	442	60	1,221	75	31	5,993	2,051	408	20	37	12	141	.249	.310	.377	.688
18	Astros	.340	2012	55	107	162	5,407	583	1,276	238	28	146	545	463	58	1,365	105	46	6,012	2,008	412	54	30	19	114	.236	.302	.371	.673
19	Tigers	.342	2002	55	106	161	5,406	575	1,340	265	37	124	546	363	64	1,035	65	44	5,920	2,051	426	30	57	22	125	.248	.300	.379	.679
20	Devil Rays	.342	2002	55	106	161	5,604	673	1,418	297	35	133	640	456	58	1,115	102	45	6,198	2,184	465	44	36	29	116	.253	.314	.390	.704
21	Royals	.346	2023	56	106	162	5,428	676	1,325	258	43	163	651	411	71	1,396	163	47	5,982	2,158	464	14	58	12	96	.244	.303	.398	.700
22	Astros	.346	2011	56	106	162	5,598	615	1,442	309	28	95	579	401	46	1,164	118	33	6,148	2,092	432	66	37	34	111	.258	.311	.374	.684
23	Royals	.346	2005	56	106	162	5,503	701	1,445	289	34	126	653	424	63	1,008	53	33	6,086	2,180	449	46	50	23	139	.263	.320	.396	.716
24	Brewers	.346	2002	56	106	162	5,415	627	1,369	269	29	139	597	500	55	1,125	94	50	6,083	2,113	437	79	34	37	144	.253	.320	.390	.711
25	Blue Jays	.349	1981	37	69	106	3,521	329	797	137	23	61	314	284	20	556	66	57	3,887	1,163	221	44	18	23	72	.226	.286	.330	.617