Between the 1962 and 1971 seasons, the San Diego Padres had the worst winning percentage by a team, winning 36.3 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	Padres	.363	176	309	485	16,217	1,635	3,806	572	109	367	1,507	1,361	99	3,273	175	134	17,971	5,697	1,048	226	68	128	367	.235	.297	.351	.648
2	Expos	.404	196	289	486	16,165	1,891	3,896	610	97	349	1,755	1,731	155	2,734	168	140	18,422	5,747	1,056	266	105	173	374	.241	.318	.356	.674
3	Mets	.408	660	957	1,622	54,473	5,655	12,920	1,861	333	1,034	5,232	4,763	375	10,415	622	448	60,645	18,549	3,228	685	349	475	1,231	.237	.301	.341	.642
4	Brewers	.408	198	287	487	16,024	1,786	3,769	541	74	355	1,650	1,761	100	2,924	340	185	18,279	5,523	970	294	100	137	346	.235	.313	.345	.658
5	Senators	.421	679	932	1,612	54,056	5,834	12,630	1,831	334	1,268	5,454	5,263	309	9,912	571	350	60,581	18,933	3,433	603	350	437	1,264	.234	.303	.350	.654
6	Astros	.441	713	905	1,621	54,495	5,873	13,126	2,045	417	909	5,427	5,114	368	9,071	749	431	61,109	18,732	3,371	760	372	591	1,213	.241	.308	.344	.652
7	Royals	.452	219	266	486	16,260	1,800	3,975	606	113	275	1,683	1,526	89	2,678	356	169	18,164	5,632	994	165	124	136	379	.244	.311	.346	.657
8	Athletics	.468	757	859	1,618	54,555	6,341	13,362	2,076	407	1,199	5,877	5,242	383	9,727	989	448	61,260	19,849	3,682	717	363	444	1,129	.245	.314	.364	.677
9	Indians	.473	765	853	1,621	54,698	6,083	13,189	1,971	257	1,441	5,675	4,772	384	9,400	670	426	60,932	19,997	3,669	693	385	478	1,135	.241	.305	.366	.670
10	Angels	.480	777	841	1,619	54,062	5,725	12,932	1,906	347	1,043	5,305	4,794	331	9,567	622	393	60,368	18,661	3,296	796	385	495	1,149	.239	.303	.345	.648
11	Cubs	.481	778	841	1,624	54,995	6,607	13,726	2,104	436	1,379	6,185	5,048	350	9,390	574	413	61,506	20,839	3,919	707	406	596	1,151	.250	.315	.379	.693
12	Phillies	.490	793	824	1,618	54,747	6,342	13,494	2,156	451	1,223	5,868	4,952	336	10,125	612	455	61,179	20,221	3,830	752	392	623	1,120	.246	.311	.369	.680
13	Red Sox	.492	795	822	1,617	54,807	6,941	13,791	2,384	349	1,657	6,506	5,561	311	9,421	452	363	61,659	21,844	4,390	598	382	497	1,331	.252	.322	.399	.721
14	White Sox	.502	814	806	1,621	54,504	6,122	13,267	1,972	358	1,057	5,669	5,230	440	8,535	822	470	61,392	19,126	3,387	814	404	474	1,116	.243	.313	.351	.664
15	Braves	.517	838	782	1,623	55,309	6,915	14,184	2,117	305	1,574	6,467	4,879	359	8,520	620	421	61,613	21,633	3,996	688	378	655	1,265	.256	.319	.391	.710
16	Yankees	.530	856	759	1,623	54,621	6,431	13,245	1,956	345	1,371	6,019	5,344	270	8,760	674	399	61,310	20,004	3,672	677	398	505	1,135	.242	.311	.366	.677
17	Pirates	.534	864	755	1,622	56,177	6,874	15,037	2,152	580	1,180	6,378	4,294	328	9,366	675	406	61,909	21,889	3,912	691	419	735	1,265	.268	.321	.390	.711
18	Tigers	.544	880	739	1,623	54,564	6,978	13,399	1,990	381	1,701	6,518	5,786	412	9,212	462	309	61,847	21,254	4,072	686	399	500	1,218	.246	.320	.390	.710
19	Dodgers	.544	883	739	1,625	54,922	6,356	13,882	1,980	428	943	5,842	4,823	305	8,647	1,136	552	61,359	19,547	3,351	885	424	606	1,133	.253	.314	.356	.670
20	Reds	.544	881	737	1,621	55,675	7,080	14,518	2,409	421	1,466	6,601	4,571	361	9,557	804	482	61,658	22,167	4,296	673	378	677	1,178	.261	.319	.398	.717
21	Cardinals	.546	884	734	1,621	55,967	6,870	14,678	2,245	494	1,077	6,366	4,658	309	8,955	1,020	495	62,013	21,142	3,816	672	407	578	1,117	.262	.320	.378	.698
22	Twins	.551	891	726	1,621	54,985	7,160	13,950	2,237	388	1,593	6,695	5,385	395	9,166	661	388	61,890	21,742	4,218	698	427	585	1,220	.254	.322	.395	.718
23	Giants	.564	914	708	1,624	55,214	7,117	13,899	2,021	350	1,595	6,598	5,481	431	9,298	595	353	62,288	21,405	3,966	777	385	694	1,283	.252	.322	.388	.710
24	Orioles	.580	936	677	1,614	54,478	6,917	13,574	2,215	310	1,547	6,487	5,689	376	9,346	706	369	61,766	21,050	4,072	779	444	579	1,214	.249	.322	.386	.708