| Aug 30, 2023 | Athanasios Mastrovasilis | ½–½ | Angelos Sandalakis | Round 7: Athanasios Mastrovasilis - Angelos Sandalakis | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 29, 2023 | Dimitris Alexakis | 1–0 | Athanasios Mastrovasilis | Round 4: Dimitris Alexakis - Athanasios Mastrovasilis | Vienna Game: Falkbeer Variation | |
| Aug 29, 2023 | Andreas Chatzieleftheriou | ½–½ | Athanasios Mastrovasilis | Round 6: Andreas Chatzieleftheriou - Athanasios Mastrovasilis | Scandinavian Defense: Portuguese Gambit, Wuss Variation | |
| Aug 13, 2023 | Catalin-Lucian Patrascu | 1–0 | Athanasios Mastrovasilis | Round 9: Catalin-Lucian Patrascu - Athanasios Mastrovasilis | Ruy Lopez: Morphy Defense, Neo-Arkhangelsk Variation | |
| Aug 12, 2023 | Athanasios Mastrovasilis | 0–1 | Haik M. Martirosyan | Round 8: Athanasios Mastrovasilis - Haik M. Martirosyan | Nimzo-Indian Defense | |
| Aug 11, 2023 | Vitaliy Bernadskiy | 0–1 | Athanasios Mastrovasilis | Romanian Grand Prix 4rd Stage Arad | Italian Game: Giuoco Piano | |
| Aug 10, 2023 | Athanasios Mastrovasilis | ½–½ | Alan Pichot | Round 4: Athanasios Mastrovasilis - Alan Pichot | Nimzo-Indian Defense | |
| Aug 10, 2023 | Ari Guz | 0–1 | Athanasios Mastrovasilis | Round 3: Ari Guz - Athanasios Mastrovasilis | Rapport-Jobava System | |
| Aug 10, 2023 | Athanasios Mastrovasilis | 1–0 | Anish Gandhi | Round 2: Athanasios Mastrovasilis - Anish Gandhi | English Opening: Agincourt Defense | |
| Aug 10, 2023 | Athanasios Mastrovasilis | 1–0 | Toni Lazov | Round 6: Athanasios Mastrovasilis - Toni Lazov | King's Indian Defense: Normal Variation | |
| Aug 10, 2023 | Tomas Brnusak | ½–½ | Athanasios Mastrovasilis | Round 5: Tomas Brnusak - Athanasios Mastrovasilis | Sicilian Defense: French Variation, Westerinen Attack | |
| Aug 10, 2023 | Olexander Bezeyko | 0–1 | Athanasios Mastrovasilis | Round 1: Olexander Bezeyko - Athanasios Mastrovasilis | Sicilian Defense: Taimanov Variation | |
| Aug 6, 2023 | Mihai-Edward Padurariu | 0–1 | Athanasios Mastrovasilis | Round 10: Mihai-Edward Padurariu - Athanasios Mastrovasilis | Sicilian Defense: French Variation | |
| Aug 6, 2023 | Athanasios Mastrovasilis | 0–1 | Bernhard Sinz | Round 9: Athanasios Mastrovasilis - Bernhard Sinz | Semi-Slav Defense: Accelerated Move Order | |
| Aug 6, 2023 | Shardul Gagare | ½–½ | Athanasios Mastrovasilis | Round 8: Shardul Gagare - Athanasios Mastrovasilis | Catalan Opening: Open Defense | |
| Aug 6, 2023 | Athanasios Mastrovasilis | ½–½ | Jakub Roubalik | Round 7: Athanasios Mastrovasilis - Jakub Roubalik | Nimzo-Indian Defense: Normal Variation, Gligoric System | |
| Aug 6, 2023 | Athanasios Mastrovasilis | 1–0 | Predrag Bodiroga | Round 6: Athanasios Mastrovasilis - Predrag Bodiroga | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 6, 2023 | Sabino Brunello | 1–0 | Athanasios Mastrovasilis | Round 5: Sabino Brunello - Athanasios Mastrovasilis | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Aug 5, 2023 | Petra Papp | * | Athanasios Mastrovasilis | Round 4: Petra Papp - Athanasios Mastrovasilis | ? | |
| Aug 5, 2023 | Athanasios Mastrovasilis | * | Iustin Ciorgovean | Round 3: Athanasios Mastrovasilis - Iustin Ciorgovean | ? | |
| Aug 5, 2023 | Zsombor Pasti | * | Athanasios Mastrovasilis | Round 2: Zsombor Pasti - Athanasios Mastrovasilis | ? | |
| Aug 5, 2023 | Athanasios Mastrovasilis | * | Andrei Podea | Round 1: Athanasios Mastrovasilis - Andrei Podea | ? | |
| Nov 6, 2022 | Dimitrios Mastrovasilis | 1–0 | Athanasios Mastrovasilis | Round 10: Dimitrios Mastrovasilis - Athanasios Mastrovasilis | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| Nov 6, 2022 | Athanasios Mastrovasilis | ½–½ | Yuriy Kuzubov | Round 9: Athanasios Mastrovasilis - Yuriy Kuzubov | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Nov 6, 2022 | Athanasios Mastrovasilis | 1–0 | Serghei Vedmediuc | Round 8: Athanasios Mastrovasilis - Serghei Vedmediuc | Slav Defense: Breyer Variation | |
| Nov 6, 2022 | Athanasios Mastrovasilis | ½–½ | Jorden Van Foreest | Round 6: Athanasios Mastrovasilis - Jorden Van Foreest | Slav Indian | |
| Nov 6, 2022 | Gadir Guseinov | 1–0 | Athanasios Mastrovasilis | Round 7: Gadir Guseinov - Athanasios Mastrovasilis | Nimzowitsch Defense: Williams Variation | |
| Nov 6, 2022 | S.P. Sethuraman | 0–1 | Athanasios Mastrovasilis | Round 5: S.P. Sethuraman - Athanasios Mastrovasilis | Nimzowitsch Defense: Scandinavian Variation, Advance Variation | |
| Nov 5, 2022 | Athanasios Mastrovasilis | 1–0 | Mihnea Costachi | Round 4: Athanasios Mastrovasilis - Mihnea Costachi | Slav Indian | |
| Nov 5, 2022 | Claudiu-Cristian Dobre | 0–1 | Athanasios Mastrovasilis | Round 3: Claudiu-Cristian Dobre - Athanasios Mastrovasilis | English Opening: Agincourt Defense | |
| Nov 5, 2022 | Athanasios Mastrovasilis | ½–½ | Alicja Sliwicka | Round 2: Athanasios Mastrovasilis - Alicja Sliwicka | Indian Defense: Spielmann-Indian | |
| Nov 5, 2022 | Iulian-Marinica Galatanu | 0–1 | Athanasios Mastrovasilis | Round 1: Iulian-Marinica Galatanu - Athanasios Mastrovasilis | Queen's Gambit Declined: Barmen Variation | |
