Between the 1932 and 1941 seasons, the Philadelphia Phillies had the lowest winning percentage by a team, winning 36.5 percent of the time.

	TEAM	W%	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	GIDP	AVG	OBP	SLG	OPS
1	Phillies	.365	556	967	1,531	53,015	6,359	14,174	2,446	400	764	5,897	4,276	205	5,562	521	58,494	19,712	3,610	998	390	.267	.324	.372	.696
2	Browns	.385	588	941	1,552	53,864	7,325	14,589	2,760	555	808	6,892	5,749	169	5,732	521	60,723	20,883	4,123	941	344	.271	.343	.388	.731
3	Athletics	.416	632	888	1,531	53,232	7,596	14,598	2,605	562	1,119	7,108	5,587	155	5,950	525	59,838	21,684	4,286	864	387	.274	.345	.407	.752
4	Braves	.454	693	834	1,538	53,309	6,017	13,780	2,200	438	622	5,589	3,982	214	5,316	378	58,449	18,722	3,260	944	340	.258	.313	.351	.664
5	White Sox	.473	719	801	1,531	53,275	7,329	14,569	2,507	544	602	6,770	5,474	196	4,633	662	59,999	19,970	3,653	1,054	360	.273	.343	.375	.718
6	Reds	.481	735	794	1,539	53,238	6,454	14,035	2,380	558	725	6,016	4,130	299	5,027	497	58,689	19,706	3,663	1,022	340	.264	.320	.370	.690
7	Senators	.493	754	774	1,542	54,779	7,798	15,454	2,705	817	546	7,213	5,433	213	4,423	733	61,332	21,431	4,068	907	318	.282	.349	.391	.740
8	Dodgers	.495	757	771	1,550	53,953	7,015	14,549	2,592	595	713	6,484	4,919	229	5,502	599	59,995	20,470	3,900	894	345	.270	.333	.379	.713
9	Red Sox	.497	757	765	1,530	53,233	7,929	14,843	2,862	620	900	7,380	5,915	168	5,156	664	60,403	21,645	4,382	1,087	402	.279	.353	.407	.759
10	Pirates	.533	816	714	1,539	54,099	7,226	15,213	2,600	766	572	6,663	4,661	218	4,375	467	59,923	21,061	3,938	945	363	.281	.341	.389	.730
11	Indians	.541	829	703	1,544	53,898	7,858	15,014	2,982	744	949	7,314	5,216	187	5,282	618	60,219	22,331	4,675	918	315	.279	.344	.414	.759
12	Giants	.551	840	684	1,536	53,891	7,133	14,713	2,313	436	1,082	6,661	4,286	285	4,840	327	59,412	21,144	3,831	950	399	.273	.330	.392	.722
13	Tigers	.552	847	687	1,543	54,168	8,539	15,305	2,914	650	1,037	7,925	6,105	218	5,510	803	61,418	22,630	4,601	927	358	.283	.358	.418	.775
14	Cardinals	.559	857	675	1,552	54,748	7,568	15,319	2,879	626	883	7,014	4,341	217	5,455	721	60,273	22,099	4,388	967	321	.280	.335	.404	.739
15	Cubs	.560	860	675	1,541	53,553	7,268	14,704	2,662	532	843	6,769	4,744	277	5,311	576	59,695	20,959	4,037	1,121	332	.275	.337	.391	.728
16	Yankees	.642	979	546	1,543	53,847	9,213	15,081	2,627	688	1,545	8,628	6,894	298	5,633	702	61,760	23,719	4,860	721	325	.280	.365	.440	.805