lowest win percentage of mlb teams all-time in one season after 1940

Since 1941, the New York Mets have the lowest winning percentage by a team in a season, winning 25.0 percent of the time in 1962.

	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	Mets	.250	1962	40	120	161	5,492	617	1,318	166	40	139	573	616	32	991	59	48	6,242	1,981	345	58	44	29	122	.240	.318	.361	.679
2	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
3	Rockies	.264	2025	32	89	121	4,065	449	966	195	29	125	438	310	35	1,139	65	31	4,445	1,594	349	14	21	5	93	.238	.296	.392	.688
4	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
5	Pirates	.273	1952	42	112	155	5,193	515	1,201	181	30	92	478	486	26	724	43	41	5,775	1,718	303	70			104	.231	.300	.331	.631
6	Phillies	.278	1942	42	109	151	5,060	394	1,174	168	37	44	356	392	16	487	37		5,557	1,548	249	89			109	.232	.289	.306	.595
7	Phillies	.279	1941	43	111	155	5,233	501	1,277	188	38	64	467	451	22	595	65		5,796	1,733	290	90			142	.244	.307	.331	.638
8	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
9	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
10	Phillies	.299	1945	46	108	154	5,203	548	1,278	197	27	56	503	449	15	501	54		5,738	1,697	280	71			113	.246	.307	.326	.634
11	Phillies	.305	1961	47	107	155	5,213	584	1,265	185	50	103	549	475	46	928	56	30	5,870	1,859	338	108	28	46	130	.243	.310	.357	.667
12	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
13	Mets	.309	1965	50	112	164	5,441	495	1,202	203	27	107	460	392	39	1,129	28	42	5,976	1,780	337	76	28	40	121	.221	.277	.327	.604
14	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
15	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
16	Mets	.315	1963	51	111	162	5,336	501	1,168	156	35	96	459	457	47	1,078	41	52	5,921	1,682	287	46	35	41	106	.219	.285	.315	.600
17	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
18	Athletics	.318	1946	49	105	155	5,200	529	1,317	220	51	40	483	482	9	596	39	30	5,796	1,759	311	105			120	.253	.318	.338	.656
19	Athletics	.318	1943	49	105	155	5,244	497	1,219	174	44	26	462	430	29	465	55	42	5,798	1,559	244	95			132	.232	.294	.297	.592
20	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
21	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
22	Expos	.321	1969	52	110	162	5,419	582	1,300	202	33	125	542	529	38	962	52	52	6,073	1,943	360	57	30	51	132	.240	.310	.359	.669
23	Padres	.321	1969	52	110	162	5,357	468	1,203	180	42	99	431	423	35	1,143	45	44	5,891	1,764	321	56	20	40	122	.225	.285	.329	.614
24	Pirates	.325	1953	50	104	154	5,253	622	1,297	178	49	99	571	524	36	715	41	39	5,902	1,870	326	89			117	.247	.319	.356	.675
25	Tigers	.325	1952	50	104	156	5,258	557	1,278	190	37	103	529	553	23	603	27	38	5,914	1,851	330	80			146	.243	.318	.352	.670