| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. I Zenyuk vs A Ostrovskiy |
| 1-0 | 43 | 2008 | United States Chess League | D15 Queen's Gambit Declined Slav |
| 2. A Ng vs A Ostrovskiy |
| ½-½ | 95 | 2008 | United States Chess League | C53 Giuoco Piano |
| 3. A Ostrovskiy vs I Krasik |
| 0-1 | 50 | 2008 | United States Chess League | A04 Reti Opening |
| 4. D Ludwig vs A Ostrovskiy |
| 1-0 | 23 | 2008 | 35th Eastern Open | D45 Queen's Gambit Declined Semi-Slav |
| 5. A Ostrovskiy vs I Nikolayev |
| 0-1 | 18 | 2009 | Empire State Open | C63 Ruy Lopez, Schliemann Defense |
| 6. Kudrin vs A Ostrovskiy |
| 1-0 | 40 | 2010 | National Chess Congress | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 7. A Ostrovskiy vs Shabalov |
| 0-1 | 38 | 2010 | National Chess Congress | B90 Sicilian, Najdorf |
| 8. A Ostrovskiy vs Kamsky |
| ½-½ | 50 | 2012 | Washington International | B42 Sicilian, Kan |
| 9. Shabalov vs A Ostrovskiy |
| 1-0 | 41 | 2012 | Washington International | C02 French, Advance |
| 10. A Ostrovskiy vs F Corrales Jimenez |
| 0-1 | 53 | 2012 | Spice Cup Open | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 11. Milov vs A Ostrovskiy |
| 0-1 | 50 | 2013 | 41st Annual World Open | D12 Queen's Gambit Declined Slav |
| 12. A Ostrovskiy vs G Kacheishvili |
| ½-½ | 74 | 2013 | 41st Annual World Open | B48 Sicilian, Taimanov Variation |
| 13. A Ostrovskiy vs Mikhalevski |
| 0-1 | 49 | 2013 | 41st Annual World Open | C55 Two Knights Defense |
| 14. S Vibbert vs A Ostrovskiy |
| ½-½ | 55 | 2013 | 41st Annual World Open | B18 Caro-Kann, Classical |
| 15. M Arnold vs A Ostrovskiy |
| 1-0 | 48 | 2013 | 41st Annual World Open | A09 Reti Opening |
| 16. A Ostrovskiy vs K Korley |
| ½-½ | 109 | 2013 | 41st Annual World Open | C67 Ruy Lopez |
| 17. M Kleinman vs A Ostrovskiy |
| 0-1 | 49 | 2013 | 41st Annual World Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 18. Xiong vs A Ostrovskiy |
| 1-0 | 36 | 2014 | ch-USA Junior | B12 Caro-Kann Defense |
| 19. Sevian vs A Ostrovskiy |
| 1-0 | 29 | 2014 | ch-USA Junior | A07 King's Indian Attack |
| 20. A Ostrovskiy vs K Dehmelt |
| 1-0 | 38 | 2016 | 54th Baltimore Open | C78 Ruy Lopez |
| 21. R Li vs A Ostrovskiy |
| 1-0 | 58 | 2016 | 54th Baltimore Open | B14 Caro-Kann, Panov-Botvinnik Attack |
| 22. A Huang vs A Ostrovskiy |
| 0-1 | 38 | 2016 | 54th Baltimore Open | B18 Caro-Kann, Classical |
| 23. A Ostrovskiy vs Xiong |
| 1-0 | 46 | 2016 | ch-USA Junior | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 24. A Ostrovskiy vs B Jacobson |
| 1-0 | 54 | 2018 | CCCSA Winter GMB | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 25. D Kadric vs A Ostrovskiy |
| 1-0 | 34 | 2018 | CCCSA Winter GMB | B12 Caro-Kann Defense |
Kibitzing
