| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. K A Brown vs C O'Donnell |
| 0-1 | 16 | 2012 | Scottish Championship | B10 Caro-Kann |
| 2. C O'Donnell vs K Arakhamia-Grant |
| 1-0 | 49 | 2012 | Scottish Championship | B23 Sicilian, Closed |
| 3. A Das vs C O'Donnell |
| 1-0 | 40 | 2012 | Scottish Championship | B10 Caro-Kann |
| 4. C O'Donnell vs D A Holmes |
| 0-1 | 44 | 2012 | Scottish Championship | B23 Sicilian, Closed |
| 5. C O'Donnell vs M Herbold |
| 1-0 | 22 | 2012 | Scottish Championship | B06 Robatsch |
| 6. M Mitchell vs C O'Donnell |
| 1-0 | 24 | 2012 | Scottish Championship | E21 Nimzo-Indian, Three Knights |
| 7. C O'Donnell vs T de Wit |
| 0-1 | 73 | 2013 | 10th Plancoet Open A | B09 Pirc, Austrian Attack |
| 8. C O'Donnell vs B Lalic |
| 0-1 | 28 | 2014 | Bunratty Masters | C55 Two Knights Defense |
| 9. P Cafolla vs C O'Donnell |
| ½-½ | 28 | 2014 | Bunratty Masters | A96 Dutch, Classical Variation |
| 10. C O'Donnell vs M Hebden |
| 0-1 | 41 | 2014 | Bunratty Masters | C55 Two Knights Defense |
| 11. D Murray vs C O'Donnell |
| 1-0 | 44 | 2014 | Bunratty Masters | C46 Three Knights |
| 12. J Fehr vs C O'Donnell |
| 0-1 | 49 | 2014 | Bunratty Masters | D12 Queen's Gambit Declined Slav |
| 13. S Williams vs C O'Donnell |
| 1-0 | 45 | 2015 | 4NCL 2014-15 | D10 Queen's Gambit Declined Slav |
| 14. R Markus vs C O'Donnell |
 | 1-0 | 34 | 2015 | European Club Cup | D30 Queen's Gambit Declined |
| 15. N Ondersteijn vs C O'Donnell |
| ½-½ | 39 | 2015 | European Club Cup | E46 Nimzo-Indian |
| 16. C O'Donnell vs T Burg |
| 1-0 | 31 | 2015 | European Club Cup | E21 Nimzo-Indian, Three Knights |
| 17. C O'Donnell vs D Ilievski |
| 0-1 | 65 | 2015 | European Club Cup | A45 Queen's Pawn Game |
| 18. C F Morris vs C O'Donnell |
| 1-0 | 30 | 2015 | European Club Cup | A20 English |
| 19. J Aabling-Thomsen vs C O'Donnell |
| 1-0 | 50 | 2015 | European Club Cup | B31 Sicilian, Rossolimo Variation |
| 20. C O'Donnell vs A Zenuni |
| 1-0 | 32 | 2015 | European Club Cup | B32 Sicilian |
| 21. P Cafolla vs C O'Donnell |
| 1-0 | 60 | 2016 | Bunratty Masters | B12 Caro-Kann Defense |
| 22. C O'Donnell vs M Cabanas Jimenez |
| ½-½ | 20 | 2016 | Bunratty Masters | D72 Neo-Grunfeld, 5.cd, Main line |
| 23. A Byrne vs C O'Donnell |
| 0-1 | 50 | 2016 | Bunratty Masters | B22 Sicilian, Alapin |
| 24. C O'Donnell vs J O'Connor |
| 1-0 | 44 | 2016 | Bunratty Masters | E63 King's Indian, Fianchetto, Panno Variation |
| 25. C O'Donnell vs A J Walton |
| 1-0 | 31 | 2016 | Bunratty Masters | D31 Queen's Gambit Declined |
Kibitzing
