what is the best record by the royals in a month since 2013 but before 2021

Between the 2013 and 2020 seasons, the Kansas City Royals had their best record in a month in October 2015, with a record of 4-0.

	TEAM	REC	MONTH	W%	G	W	L	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	4-0	October 2015	1.000	4	4	0	143	20	39	12	2	1	17	19	0	21	4	0	166	58	15	2	2	2	2	.273	.354	.406	.759
2	Royals	20-9	August 2016	.690	29	20	9	1,016	132	253	47	9	30	125	74	9	234	26	8	1,120	408	86	14	7	7	21	.249	.304	.402	.705
3	Royals	15-7	April 2015	.682	22	15	7	782	119	239	47	6	18	112	52	20	131	20	7	866	352	71	7	5	6	23	.306	.362	.450	.812
4	Royals	19-9	August 2015	.679	28	19	9	959	129	256	55	8	22	123	81	10	150	22	4	1,065	393	85	7	8	5	23	.267	.328	.410	.738
5	Royals	2-1	March 2019	.667	3	2	1	96	16	21	6	2	0	15	9	2	20	3	0	109	31	8	1	1	0	1	.219	.296	.323	.619
6	Royals	19-10	August 2014	.655	29	19	10	985	129	262	39	6	25	123	64	12	161	36	6	1,074	388	70	6	7	3	30	.266	.316	.394	.710
7	Royals	17-9	June 2017	.654	26	17	9	904	136	250	56	6	34	130	55	3	198	7	0	971	420	96	1	8	3	24	.277	.318	.465	.782
8	Royals	17-10	June 2014	.630	27	17	10	927	128	259	52	5	23	122	60	11	159	16	6	1,010	390	80	3	9	4	25	.279	.328	.421	.748
9	Royals	17-10	September 2013	.630	27	17	10	924	103	242	44	7	18	95	66	6	208	31	8	1,010	354	69	8	6	5	22	.262	.313	.383	.696
10	Royals	16-10	July 2017	.615	26	16	10	926	141	258	46	5	38	132	64	13	200	22	5	1,014	428	89	2	9	3	25	.279	.331	.462	.793
11	Royals	17-11	May 2016	.607	28	17	11	975	133	281	53	4	24	127	58	12	201	20	6	1,058	414	81	6	7	3	25	.288	.334	.425	.758
12	Royals	17-11	July 2015	.607	28	17	11	953	123	255	44	9	24	119	58	18	157	22	6	1,040	389	77	6	5	4	30	.268	.320	.408	.728
13	Royals	15-10	July 2013	.600	25	15	10	846	97	209	33	4	20	94	71	9	156	19	3	943	310	57	7	10	6	15	.247	.309	.366	.675
14	Royals	16-11	June 2013	.593	27	16	11	914	108	238	45	5	20	101	68	6	165	20	6	1,000	353	70	8	4	5	19	.260	.315	.386	.701
15	Royals	14-10	April 2013	.583	24	14	10	814	104	216	47	6	15	101	65	6	165	22	4	898	320	68	5	8	6	24	.265	.321	.393	.715
16	Royals	15-11	June 2015	.577	26	15	11	874	93	227	39	4	19	89	55	7	156	15	4	946	331	62	1	9	3	20	.260	.306	.379	.685
17	Royals	15-11	September 2014	.577	26	15	11	874	96	229	52	5	9	87	64	10	181	28	9	958	318	66	5	5	6	14	.262	.318	.364	.682
18	Royals	14-11	April 2014	.560	25	14	11	850	102	224	50	4	11	95	66	4	146	20	8	933	315	65	6	7	2	21	.264	.317	.371	.688
19	Royals	14-12	May 2015	.538	26	14	12	871	105	220	48	8	19	99	49	9	147	8	6	943	341	75	6	8	4	17	.253	.297	.392	.688
20	Royals	15-13	September 2018	.536	28	15	13	971	131	246	60	9	31	124	74	9	249	39	8	1,065	417	100	6	5	2	16	.253	.311	.429	.740
21	Royals	12-11	April 2016	.522	23	12	11	767	77	193	38	4	20	72	60	3	156	18	4	838	299	62	3	5	1	23	.252	.307	.390	.696
22	Royals	15-14	September 2017	.517	29	15	14	985	131	275	56	5	31	124	67	7	174	13	13	1,065	434	92	0	6	5	38	.279	.328	.441	.768
23	Royals	15-14	May 2017	.517	29	15	14	969	115	240	46	2	34	107	75	12	205	15	4	1,069	392	82	5	8	3	27	.248	.307	.405	.712
24	Royals	16-15	August 2013	.516	31	16	15	1,084	135	293	43	5	25	133	89	7	175	41	6	1,198	421	73	7	11	10	25	.270	.327	.388	.715
25	Royals	13-14	June 2016	.481	27	13	14	957	108	272	47	3	25	103	59	5	208	11	8	1,035	400	75	9	5	7	17	.284	.327	.418	.745