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Tournaments played by Michael O'Neill |
| Date | Name | Old rating | Current rating |
|---|---|---|---|
| 2005-03-09 | Wellington Catholic School Board Chess Challenge | 597 | 597 |
| 2004-03-09 | Canadian Chess Challenge - Ontario Provincials | 614 | 597 |
| 2004-03-06 | Separate School Chess Challenge | 0 | 614 |