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Tournaments played by Karl Valdez |
| Date | Name | Old rating | Current rating |
|---|---|---|---|
| 2006-03-25 | York Region Optimist Chess Challenge | 544 | 616 |
| 2003-12-04 | Thornhill Sunday Chess | 500 | 544 |
| 2003-11-23 | Thornhill Sunday Chess | 547 | 500 |
| 2003-11-02 | Thornhill Sunday Chess | 551 | 547 |
| 2003-11-09 | Thornhill Sunday Chess | 581 | 551 |
| 2003-11-02 | Thornhill Sunday Chess | 469 | 581 |
| 2003-10-26 | Thornhill Sunday Chess | 387 | 469 |
| 2003-10-19 | Thornhill Sunday Chess | 400 | 387 |
| 2003-11-16 | Thornhill Sunday Chess | 412 | 400 |