| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. R Antoniou vs S Vetokhin |
| 0-1 | 40 | 2016 | World Cadets U12 | C00 French Defense |
| 2. D Kotolashvili vs R Antoniou |
| 1-0 | 24 | 2016 | World Cadets U12 | B40 Sicilian |
| 3. R Antoniou vs M Huseynli |
| 1-0 | 19 | 2016 | World Cadets U12 | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 4. V Lyakh vs R Antoniou |
| 1-0 | 11 | 2016 | World Cadets U12 | B21 Sicilian, 2.f4 and 2.d4 |
| 5. R Antoniou vs G Rupais |
| 0-1 | 19 | 2016 | World Cadets U12 | B92 Sicilian, Najdorf, Opocensky Variation |
| 6. Tinaye Madamombe vs R Antoniou |
| 1-0 | 26 | 2016 | World Cadets U12 | E32 Nimzo-Indian, Classical |
| 7. Y Tchouka vs R Antoniou |
| 0-1 | 18 | 2022 | Chennai Olympiad | B45 Sicilian, Taimanov |
| 8. R Antoniou vs M Seder |
| 1-0 | 60 | 2022 | Chennai Olympiad | C01 French, Exchange |
| 9. W Kobese vs R Antoniou |
| 1-0 | 32 | 2022 | Chennai Olympiad | B45 Sicilian, Taimanov |
| 10. R Mcligeyo vs R Antoniou |
| 0-1 | 55 | 2022 | Chennai Olympiad | B45 Sicilian, Taimanov |
| 11. R Antoniou vs N Zrikem |
| 0-1 | 34 | 2022 | Chennai Olympiad | C55 Two Knights Defense |
| 12. S A Ashrafi vs R Antoniou |
| 1-0 | 28 | 2022 | Chennai Olympiad | D02 Queen's Pawn Game |
| 13. R Antoniou vs Amako Marc Arnold |
| 1-0 | 55 | 2022 | Chennai Olympiad | C42 Petrov Defense |
| 14. R Antoniou vs Mohamed Ahmed Nor |
| 1-0 | 42 | 2022 | Chennai Olympiad | B22 Sicilian, Alapin |
| 15. Y T Poh vs R Antoniou |
| 1-0 | 41 | 2022 | Chennai Olympiad | B45 Sicilian, Taimanov |
| 16. R Antoniou vs R Rustamov |
| ½-½ | 40 | 2024 | European Youth Championship U16 | A20 English |
| 17. R Antoniou vs L Gut |
| ½-½ | 20 | 2024 | European Youth Championship U16 | D85 Grunfeld |
| 18. R Antoniou vs S Sapocinic |
| ½-½ | 41 | 2024 | European Youth Championship U16 | C42 Petrov Defense |
| 19. S Zilka vs R Antoniou |
| 1-0 | 38 | 2024 | Budapest Olympiad | B45 Sicilian, Taimanov |
| 20. S Lee vs R Antoniou |
| ½-½ | 103 | 2024 | Budapest Olympiad | A07 King's Indian Attack |
| 21. R Antoniou vs Nimal Hussain |
| 1-0 | 41 | 2024 | Budapest Olympiad | A20 English |
| 22. R Antoniou vs A Hommadov |
| ½-½ | 39 | 2024 | Budapest Olympiad | E92 King's Indian |
| 23. R Antoniou vs Kibrom Weldegebriel Beraki |
| 1-0 | 76 | 2024 | Budapest Olympiad | A13 English |
| 24. L Brahami vs R Antoniou |
| ½-½ | 58 | 2024 | Budapest Olympiad | A57 Benko Gambit |
| 25. R Antoniou vs Garth I Owen |
| ½-½ | 37 | 2024 | Budapest Olympiad | E97 King's Indian |
Kibitzing
