The Kansas City Royals had their worst winning percentage in a season in 2023 and in 2005, winning 34.6 percent of the time.

	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	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
2	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
3	Royals	.358	2018	58	104	162	5,505	638	1,350	283	29	155	606	427	67	1,310	117	38	6,063	2,156	467	24	40	13	123	.245	.305	.392	.697
4	Royals	.358	2004	58	104	162	5,538	720	1,432	261	29	150	675	461	76	1,057	67	48	6,153	2,201	440	40	38	28	130	.259	.322	.397	.720
5	Royals	.364	2019	59	103	162	5,496	691	1,356	281	40	162	655	456	59	1,405	117	39	6,077	2,203	483	24	42	17	113	.247	.309	.401	.710
6	Cubs	.364	1966	59	103	162	5,592	644	1,418	203	43	140	603	457	47	998	76	47	6,213	2,127	386	80	37	53	112	.254	.313	.380	.694
7	Cubs	.364	1962	59	103	162	5,534	632	1,398	196	56	126	600	504	39	1,044	78	50	6,173	2,084	378	54	42	43	131	.253	.317	.377	.694
8	Cubs	.369	1981	38	65	106	3,546	370	838	138	29	57	348	342	13	611	72	41	3,984	1,205	224	53	30	44	78	.236	.303	.340	.643
9	Cubs	.377	2012	61	101	162	5,411	613	1,297	265	36	137	570	447	43	1,235	94	45	5,967	2,045	438	42	24	29	125	.240	.302	.378	.680
10	Orphans	.381	1901	53	86	140	4,844	578	1,250	153	61	18	481	314	52	530	204		5,277	1,579	232	67				.258	.310	.326	.636
11	Royals	.383	2006	62	100	162	5,589	757	1,515	335	37	124	718	474	64	1,040	65	34	6,227	2,296	496	52	48	32	130	.271	.332	.411	.743
12	Royals	.383	2002	62	100	162	5,535	737	1,415	285	42	140	695	524	52	921	140	65	6,206	2,204	467	44	51	27	106	.256	.323	.398	.721
13	Cubs	.390	1960	60	94	156	5,311	634	1,293	213	48	119	600	531	19	897	51	34	5,960	1,959	380	64	35	69	109	.243	.313	.369	.681
14	Cubs	.390	1956	60	94	157	5,260	597	1,281	202	50	142	563	446	13	776	55	38	5,852	2,009	394	87	46	60	99	.244	.302	.382	.684
15	Cubs	.395	1980	64	98	162	5,619	614	1,411	251	35	107	578	471	18	912	93	64	6,217	2,053	393	69	40	54	119	.251	.309	.365	.674
16	Cubs	.396	1949	61	93	154	5,214	593	1,336	212	53	97	539	396	26	573	53		5,723	1,945	362	87			121	.256	.312	.373	.685
17	Royals	.398	1999	64	97	161	5,624	856	1,584	294	52	151	800	535	64	932	127	39	6,325	2,435	497	46	56	25	156	.282	.348	.433	.781
18	Royals	.401	2022	65	97	162	5,437	640	1,327	247	38	138	613	460	48	1,287	104	34	6,009	2,064	423	20	44	7	101	.244	.306	.380	.686
19	Royals	.401	2009	65	97	162	5,532	686	1,432	276	51	144	657	457	42	1,091	88	29	6,101	2,242	471	38	32	20	135	.259	.318	.405	.724
20	Royals	.401	2001	65	97	162	5,643	729	1,503	277	37	152	691	406	44	898	100	42	6,176	2,310	466	36	47	31	134	.266	.318	.409	.727
21	Cubs	.401	2000	65	97	162	5,577	764	1,426	272	23	183	722	632	54	1,120	93	37	6,397	2,293	478	89	45	50	114	.256	.335	.411	.746
22	Royals	.401	1970	65	97	162	5,503	611	1,341	202	41	97	572	514	21	958	97	53	6,128	1,916	340	63	27	42	126	.244	.309	.348	.657
23	Cubs	.403	1957	62	92	156	5,369	628	1,312	223	31	147	590	461	26	989	28	25	5,947	2,038	401	58	33	34	104	.244	.305	.380	.685
24	Cubs	.403	1951	62	92	155	5,307	614	1,327	200	47	103	572	477	22	647	63	30	5,862	1,930	350	56			139	.250	.315	.364	.678
25	Cubs	.407	2013	66	96	162	5,498	602	1,307	297	18	172	576	439	67	1,230	63	32	6,077	2,156	487	43	30	28	120	.238	.300	.392	.693