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Tournaments played by Sean Lei |
| Date | Name | Old rating | Current rating |
|---|---|---|---|
| 2013-06-02 | Oriole | 1530 | 1547 |
| 2013-05-19 | Oriole | 1552 | 1530 |
| 2013-05-12 | Oriole | 1540 | 1552 |
| 2013-05-05 | Oriole | 1541 | 1540 |
| 2013-04-27 | Oriole | 1505 | 1541 |
| 2013-04-21 | 2013 Ontario Chess Challenge | 1516 | 1505 |
| 2013-04-14 | Oriole | 1452 | 1516 |
| 2013-02-24 | Ontario Chess Challenge Qualifier | 1431 | 1452 |
| 2012-12-09 | Oriole | 1409 | 1431 |
| 2012-12-02 | Festival of Lights Open Kids Chess Tournament | 1430 | 1409 |
| 2012-11-25 | Oriole | 1412 | 1430 |
| 2012-10-28 | Oriole | 1387 | 1412 |
| 2012-09-23 | 23 September 2012 Scholastic | 1406 | 1387 |
| 2012-09-02 | Oriole | 1398 | 1406 |
| 2012-08-26 | Oriole | 1366 | 1398 |
| 2012-08-12 | Oriole | 1396 | 1366 |
| 2012-08-05 | Oriole | 1414 | 1396 |
| 2012-07-22 | Oriole | 1387 | 1414 |
| 2012-07-15 | Oriole | 1341 | 1387 |
| 2012-07-08 | Oriole | 1326 | 1341 |
| 2012-06-17 | Oriole | 1348 | 1326 |
| 2012-06-10 | Oriole | 1298 | 1348 |
| 2012-06-03 | Oriole | 1240 | 1298 |
| 2012-05-27 | Oriole | 1186 | 1240 |
| 2012-05-20 | Oriole | 1155 | 1186 |
| 2012-05-13 | Oriole | 1081 | 1155 |
| 2012-05-06 | Oriole | 1021 | 1081 |
| 2012-04-29 | Oriole | 993 | 1021 |
| 2012-04-22 | 2012 Ontario Chess Challenge | 971 | 993 |
| 2012-04-15 | Oriole | 815 | 971 |
| 2012-03-31 | York Region Chess Challenge | 0 | 815 |