O Su Yong: ranking history (ITTF)

Year	Month	Day	Rating	Rank
2005	August	1	1105	223
2005	July	1	1106	222
2005	June	1	1106	221
2005	May	1	1106	224
2005	April	1	1106	222
2005	February	1	1107	224
2005	January	1	1106	224
2004	December	1	1107	229
2004	November	1	1102	227
2004	September	1	1099	216
2004	August	1	1099	217
2004	July	1	1099	216
2004	June	1	1099	211
2004	May	1	1099	213
2004	April	1	1099	214
2004	March	1	1099	216
2004	February	1	1098	218
2004	January	1	1098	217
2003	August	1	1107	184
2003	July	1	1107	187
2003	June	1	1107	188
2003	May	1	1107	192
2003	April	1	1107	190
2003	March	1	1111	187
2003	February	1	1111	190
2003	January	1	1110	185
2002	November	1	1102	186
2002	October	1	1102	181
2002	September	1	1097	175
2002	August	1	1073	175
2002	July	1	1082	171
2002	June	1	1081	169
2002	May	1	1076	169
2002	April	1	1074	172
2002	March	1	1075	170
2002	February	1	1047	180
2002	January	1	1049	180
2001	December	1	1046	180
2001	November	1	1046	178
2001	October	1	1046	177
2001	September	1	1046	174
2001	July	1	1071	161
2001	June	1	1071	159
2001	May	1	1070	155
2001	April	1	1070	156
2001	March	1	1059	160
2001	February	1	1065	151
2001	January	1	1063	144