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Tournaments played by Karl Westerholm |
| Date | Name | Old rating | Current rating |
|---|---|---|---|
| 2010-11-19 | P.A. Day Tournament | 785 | 771 |
| 2010-02-06 | Children's Storefront Chess Tournament | 723 | 785 |
| 2009-03-08 | Ontario Team Championship (K-6) | 689 | 723 |
| 2009-02-13 | Midtown Toronto District | 680 | 689 |
| 2009-02-01 | Tournament | 590 | 680 |
| 2008-06-07 | Quebec-Ontario Team Tournament - K-6 | 573 | 590 |
| 2008-03-02 | Ontario Team Championships (K - 6) | 573 | 200 |
| 2007-11-25 | Toronto Team Championships (K - 6) | 467 | 573 |
| 2007-03-03 | Ontario Team K-3 | 448 | 467 |
| 2006-11-25 | 2006 Toronto Team Championship - K-3 - Extra games | 431 | 448 |
| 2006-11-25 | Toronto Team Tournament K-3 | 424 | 431 |
| 2006-06-03 | K-3 Quebec-Ontario Team Match | 469 | 424 |
| 2006-03-10 | Palmerston P.S. #3 | 467 | 469 |
| 2006-03-04 | Toronto Team (K-3) | 0 | 467 |