| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. C Pedersen vs D Opasiak |
| 1-0 | 40 | 2011 | London Chess Classic Open | C55 Two Knights Defense |
| 2. V Balint vs D Opasiak |
| 1-0 | 52 | 2013 | London Chess Classic Open | C12 French, McCutcheon |
| 3. D Opasiak vs F de Andres Gonalons |
| 1-0 | 47 | 2013 | London Chess Classic Open | C10 French |
| 4. R Williamson vs D Opasiak |
| ½-½ | 76 | 2013 | London Chess Classic Open | A44 Old Benoni Defense |
| 5. D Opasiak vs T Hebbes |
| ½-½ | 43 | 2013 | London Chess Classic Open | C11 French |
| 6. M Josse vs D Opasiak |
| 1-0 | 38 | 2013 | London Chess Classic Open | A56 Benoni Defense |
| 7. D Opasiak vs J Puccini |
| 0-1 | 23 | 2013 | London Chess Classic Open | A07 King's Indian Attack |
| 8. D Faldon vs D Opasiak |
 | 1-0 | 14 | 2013 | London Chess Classic Open | A45 Queen's Pawn Game |
| 9. D Opasiak vs P Barasi |
| 1-0 | 55 | 2013 | London Chess Classic Open | A07 King's Indian Attack |
| 10. C Nettleton vs D Opasiak |
| 1-0 | 19 | 2013 | London Chess Classic Open | A46 Queen's Pawn Game |
| 11. D Opasiak vs E Vaarala |
| 0-1 | 27 | 2014 | Reykjavik Open | C18 French, Winawer |
| 12. R Frick vs D Opasiak |
| 1-0 | 28 | 2014 | Reykjavik Open | C12 French, McCutcheon |
| 13. D Opasiak vs J A Finnsson |
| 1-0 | 48 | 2014 | Reykjavik Open | A07 King's Indian Attack |
| 14. H Baldursson vs D Opasiak |
| 1-0 | 32 | 2014 | Reykjavik Open | D07 Queen's Gambit Declined, Chigorin Defense |
| 15. D Opasiak vs H Briem |
| 1-0 | 36 | 2014 | Reykjavik Open | C14 French, Classical |
| 16. P Omtvedt vs D Opasiak |
| 1-0 | 41 | 2014 | Reykjavik Open | C04 French, Tarrasch, Guimard Main line |
| 17. D Opasiak vs B O Birkisson |
| 1-0 | 38 | 2014 | Reykjavik Open | C68 Ruy Lopez, Exchange |
| 18. M Raddatz vs D Opasiak |
| 0-1 | 69 | 2014 | Reykjavik Open | C03 French, Tarrasch |
| 19. D Opasiak vs R Berg |
| 0-1 | 24 | 2014 | Reykjavik Open | C18 French, Winawer |
| 20. L A Svensson vs D Opasiak |
| 0-1 | 66 | 2014 | Reykjavik Open | B02 Alekhine's Defense |
| 21. E Weinzettl vs D Opasiak |
| 1-0 | 11 | 2014 | Tschaturanga Open | C04 French, Tarrasch, Guimard Main line |
| 22. D Opasiak vs H Gao |
| 0-1 | 40 | 2015 | New Zealand Open | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 23. M Schmitz vs D Opasiak |
| 0-1 | 44 | 2015 | New Zealand Open | A43 Old Benoni |
| 24. T Reilly vs D Opasiak |
| 1-0 | 16 | 2015 | New Zealand Open | A56 Benoni Defense |
| 25. M Bartel vs D Opasiak |
| 1-0 | 31 | 2015 | Gibraltar Masters | A44 Old Benoni Defense |
Kibitzing
