Kohatsu Massao: ranking history (ITTF)

Year	Month	Day	Rating	Rank
2018	May	1	609	412
2018	April	1	609	467
2018	March	1	609	451
2018	February	1	609	452
2018	January	1	609	456
2017	October	1	1473	356
2017	September	1	1473	343
2017	August	1	1473	305
2017	July	1	1473	312
2017	June	1	1473	307
2016	January	1	1477	300
2015	December	1	1485	313
2015	November	1	1485	344
2015	October	1	1485	339
2015	August	1	1387	375
2015	July	1	1387	373
2015	June	1	1419	363
2015	May	1	1324	360
2015	April	1	1336	349
2015	March	1	1326	350
2015	February	1	1336	348
2015	January	1	1330	366
2014	December	1	1333	395
2014	November	1	1333	373
2014	October	1	1333	408
2014	September	1	1356	423
2014	August	1	1324	442
2014	July	1	1286	460
2014	June	1	1257	448
2014	May	1	1259	420
2014	April	1	1236	406
2014	March	1	1246	530
2014	February	1	1238	610
2014	January	1	1238	599
2013	December	1	1156	677
2013	November	1	1156	668
2013	October	1	1156	667
2013	September	1	1129	710
2013	August	1	1153	685
2013	July	1	1159	653
2013	June	1	997	862
2013	May	1	997	814
2013	April	1	984	849
2013	March	1	984	920
2013	February	1	984	914
2013	January	1	984	930
2012	December	1	995	926
2012	November	1	994	919
2012	October	1	994	937
2012	September	1	901	1058
2012	August	1	905	1045
2012	July	1	942	990
2012	June	1	925	1024
2012	May	1	926	1036
2012	April	1	828	1203
2012	March	1	825	1141
2012	February	1	860	1102
2012	January	1	860	1100
2011	December	1	860	1101
2011	November	1	860	1132
2011	October	1	860	1148
2011	September	1	848	1140
2011	August	1	847	1153
2011	July	1	807	1250
2011	June	1	681	1495
2011	May	1	680	1485
2011	April	1	680	1513
2011	March	1	680	1515
2011	February	1	680	1504
2011	January	1	680	1512
2010	December	1	680	1507
2010	November	1	679	1498
2010	October	1	679	1523