| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Oparin vs N Maiorov |
 | 1-0 | 24 | 2004 | RUS-ch U10 | B70 Sicilian, Dragon Variation |
| 2. G Oparin vs Sergey Shibanov |
| 1-0 | 25 | 2004 | RUS-ch U10 | C19 French, Winawer, Advance |
| 3. G Oparin vs Vladislav Perelomov |
| 1-0 | 25 | 2004 | RUS-ch U10 | B43 Sicilian, Kan, 5.Nc3 |
| 4. G Oparin vs R Musaev |
| 0-1 | 25 | 2004 | RUS-ch U10 | C42 Petrov Defense |
| 5. Nikita Semyonov vs G Oparin |
| 1-0 | 25 | 2004 | RUS-ch U10 | B20 Sicilian |
| 6. Vyacheslav Lapshin vs G Oparin |
| 0-1 | 25 | 2004 | RUS-ch U10 | B22 Sicilian, Alapin |
| 7. Marat Amaltdinov vs G Oparin |
| 1-0 | 25 | 2004 | RUS-ch U10 | B93 Sicilian, Najdorf, 6.f4 |
| 8. Andrey Chenchik vs G Oparin |
| ½-½ | 25 | 2004 | RUS-ch U10 | D03 Torre Attack (Tartakower Variation) |
| 9. G Oparin vs S Markoja |
| 0-1 | 30 | 2006 | EU-ch U10 | C45 Scotch Game |
| 10. D Marjanovic vs G Oparin |
| 0-1 | 35 | 2006 | EU-ch U10 | B95 Sicilian, Najdorf, 6...e6 |
| 11. L Lekic vs G Oparin |
| 0-1 | 33 | 2006 | EU-ch U10 | A07 King's Indian Attack |
| 12. G Oparin vs E Kirk |
| 1-0 | 27 | 2006 | EU-ch U10 | B76 Sicilian, Dragon, Yugoslav Attack |
| 13. A Mindlin vs G Oparin |
| 0-1 | 46 | 2006 | EU-ch U10 | B90 Sicilian, Najdorf |
| 14. G Oparin vs M Yilmaz |
| 1-0 | 61 | 2006 | EU-ch U10 | C42 Petrov Defense |
| 15. Nikita Pozdeev vs G Oparin |
| 0-1 | 48 | 2007 | Moscow Petrosian mem U18 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 16. E Babaian vs G Oparin |
| ½-½ | 68 | 2007 | Moscow Petrosian mem U18 | A07 King's Indian Attack |
| 17. G Oparin vs V Zarivkina |
| 0-1 | 60 | 2007 | Moscow Petrosian mem U18 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 18. G Oparin vs Ekaterina Liasko |
| ½-½ | 50 | 2007 | Moscow Petrosian mem U18 | B33 Sicilian |
| 19. M Demidov vs G Oparin |
| ½-½ | 81 | 2007 | Moscow Petrosian mem U18 | D37 Queen's Gambit Declined |
| 20. Nikita Shapran vs G Oparin |
| ½-½ | 32 | 2007 | Moscow Petrosian mem U18 | D37 Queen's Gambit Declined |
| 21. G Oparin vs Ali Nagiev |
| 1-0 | 41 | 2007 | Moscow Petrosian mem U18 | B01 Scandinavian |
| 22. G Oparin vs Evgeniy Kovalishin |
| ½-½ | 39 | 2007 | Moscow Petrosian mem U18 | B09 Pirc, Austrian Attack |
| 23. M Mozharov vs G Oparin |
| 1-0 | 58 | 2007 | Moscow Petrosian mem U18 | D31 Queen's Gambit Declined |
| 24. D Pires vs G Oparin |
| 0-1 | 56 | 2007 | EU-ch U10 17th | B22 Sicilian, Alapin |
| 25. G Oparin vs A Boruchovsky |
| 1-0 | 46 | 2007 | EU-ch U10 17th | C45 Scotch Game |
Kibitzing
