| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Illescas-Cordoba vs Onischuk |
| ½-½ | 36 |
1999 |
EU-chT (Men) | D63 Queen's Gambit Declined, Orthodox Defense |
| 2. B Avrukh vs Onischuk |
| ½-½ | 18 |
2000 |
Corus | D63 Queen's Gambit Declined, Orthodox Defense |
| 3. P Nikolic vs Onischuk |
| ½-½ | 39 |
2001 |
ECC | D62 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 4. E Vladimirov vs Onischuk |
| ½-½ | 53 |
2001 |
TCh-RUS | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 5. Vladimir Lymar vs Onischuk |
| 0-1 | 81 |
2002 |
30th Annual World Open | D63 Queen's Gambit Declined, Orthodox Defense |
| 6. Vaganian vs Onischuk |
| 0-1 | 39 |
2002 |
FIDE Moscow Gran Prix | D63 Queen's Gambit Declined, Orthodox Defense |
| 7. M Gurevich vs Onischuk |
| ½-½ | 17 |
2002 |
Cap dAgde Chess Festival | D62 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 8. Vaganian vs Onischuk |
| 1-0 | 54 |
2002 |
FIDE Moscow Gran Prix | D63 Queen's Gambit Declined, Orthodox Defense |
| 9. E Relange vs Onischuk |
| 0-1 | 47 |
2002 |
European Club Cup | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 10. N Stanec vs Onischuk |
| ½-½ | 45 |
2002 |
European Club Cup | D60 Queen's Gambit Declined, Orthodox Defense |
| 11. Lputian vs Onischuk |
 | 0-1 | 40 |
2003 |
4th Karpov It | D56 Queen's Gambit Declined |
| 12. Z Franco-Ocampos vs Onischuk |
| 0-1 | 69 |
2003 |
Torneo Continental Americano | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 13. V Zvjaginsev vs Onischuk |
| ½-½ | 22 |
2003 |
4th Karpov It | D56 Queen's Gambit Declined |
| 14. A Korotylev vs Onischuk |
| ½-½ | 41 |
2004 |
Russia Team Championship | D66 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 15. Ivanchuk vs Onischuk |
| 1-0 | 54 |
2005 |
World Team Championship | D56 Queen's Gambit Declined |
| 16. P Nikolic vs Onischuk |
| ½-½ | 20 |
2005 |
Corus Tournament: Group B | D55 Queen's Gambit Declined |
| 17. P Nikolic vs Onischuk |
| ½-½ | 15 |
2007 |
World Chess Cup | D55 Queen's Gambit Declined |
| 18. V Akobian vs Onischuk |
| ½-½ | 26 |
2008 |
SPICE Cup | D56 Queen's Gambit Declined |
| 19. Bologan vs Onischuk |
| ½-½ | 26 |
2008 |
Poikovsky Tournament | D60 Queen's Gambit Declined, Orthodox Defense |
| 20. A Riazantsev vs Onischuk |
| ½-½ | 43 |
2008 |
Russian Team Championship | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 21. M Bezold vs Onischuk |
| 0-1 | 55 |
2008 |
Euro Club Cup | D51 Queen's Gambit Declined |
| 22. K Miton vs Onischuk |
| ½-½ | 47 |
2008 |
SPICE Cup | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
