| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. T O'Donnell vs G Garcia |
| 1-0 | 81 | 1988 | Saint John Open I | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 2. T O'Donnell vs J Vidarsson |
| ½-½ | 22 | 1988 | Saint John Open I | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 3. T O'Donnell vs B Lalic |
| ½-½ | 18 | 1988 | Saint John Open II | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 4. T O'Donnell vs C Hurelbaatar |
| 0-1 | 86 | 1990 | Novi Sad Olympiad | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 5. T O'Donnell vs N Ferreira |
| ½-½ | 47 | 1990 | Novi Sad Olympiad | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 6. T O'Donnell vs A Frolov |
| 1-0 | 40 | 1990 | Hungaroil | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 7. T O'Donnell vs L Day |
 | 1-0 | 54 | 1992 | Canadian Championship | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 8. T O'Donnell vs B Kiviaho |
| 1-0 | 38 | 1995 | CAN-ch | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 9. T O'Donnell vs V Gaspariants |
| 1-0 | 37 | 2001 | Canadian Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 10. T O'Donnell vs L Christiansen |
| ½-½ | 51 | 2001 | Canadian Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
Kibitzing
