The Louisville Colonels had the worst winning percentage by a team in 1889, winning 19.6 percent of the time.

	TEAM	W%	SEASON	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	AVG	OBP	SLG	OPS
1	Colonels	.196	1889	27	111	140	4,955	632	1,249	170	75	22	503	320	41	521	203	5,316	1,635	267	.252	.303	.330	.633
2	Nationals	.331	1889	41	83	127	4,395	632	1,105	151	57	25	486	466	43	456	232	4,904	1,445	233	.251	.329	.329	.658
3	Cowboys	.401	1889	55	82	139	4,947	852	1,256	162	76	18	621	430	66	626	472	5,443	1,624	256	.254	.322	.328	.650
4	Solons	.435	1889	60	78	140	4,816	779	1,247	171	95	36	617	507	42	609	304	5,365	1,716	302	.259	.335	.356	.691
5	Hoosiers	.440	1889	59	75	135	4,879	819	1,356	228	35	62	662	377	44	447	252	5,300	1,840	325	.278	.335	.377	.712
6	Spiders	.459	1889	61	72	136	4,673	656	1,167	131	59	25	523	429	38	417	237	5,140	1,491	215	.250	.318	.319	.637
7	Alleghenys	.462	1889	61	71	134	4,748	726	1,202	209	65	42	597	420	44	467	231	5,212	1,667	316	.253	.320	.351	.671
8	Quakers	.496	1889	63	64	130	4,695	742	1,248	215	52	44	605	393	35	353	269	5,123	1,699	311	.266	.327	.362	.689
9	White Stockings	.508	1889	67	65	136	4,849	867	1,338	184	66	79	705	518	30	516	243	5,397	1,891	329	.276	.349	.390	.739
10	Orioles	.519	1889	70	65	139	4,756	791	1,209	155	68	20	618	418	82	536	311	5,256	1,560	243	.254	.325	.328	.653
11	Red Stockings	.547	1889	76	63	141	4,844	897	1,307	197	96	52	696	452	60	511	462	5,356	1,852	345	.270	.340	.382	.722
12	Athletics	.564	1889	75	58	138	4,868	880	1,339	239	65	43	680	534	62	496	252	5,464	1,837	347	.275	.354	.377	.731
13	Beaneaters	.648	1889	83	45	133	4,628	826	1,251	196	54	42	666	471	41	450	331	5,140	1,681	292	.270	.343	.363	.706
14	Giants	.659	1889	83	43	131	4,671	935	1,319	208	77	52	744	538	27	386	292	5,236	1,837	337	.282	.360	.393	.753
15	Browns	.667	1889	90	45	141	4,939	957	1,312	211	64	58	743	493	55	477	336	5,487	1,825	333	.266	.339	.370	.708
16	Bridegrooms	.679	1889	93	44	140	4,815	995	1,265	188	79	47	761	550	49	401	389	5,414	1,752	314	.263	.344	.364	.708