41 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Megalios, Konstantinos | Daudov, Timur | 1-0 | A15 | Olymp 2026 Open | 2026-09-27 |
| Megalios, Konstantinos | Smerdon, David C | 0-1 | E92 | Olymp 2026 Open | 2026-09-25 |
| Megalios, Konstantinos | Jeitz, Christian | 1-0 | A16 | Olymp 2026 Open | 2026-09-19 |
| Megalios, Konstantinos | Mohammed Al Ryami | 1-0 | E94 | Olymp 2026 Open | 2026-09-16 |
| Megalios, Konstantinos | Androutsopoulos-Agiotatos, Vasil | 1/2-1/2 | E92 | Round 5: Megalios, Konstantinos - Androutsopoulos-Agiotatos, Vasil | 2026-07-08 |
| Megalios, Konstantinos | Boci, Mateu | 1/2-1/2 | B23 | Round 2: Megalios, Konstantinos - Boci, Mateu | 2026-07-06 |
| Megalios, Konstantinos | Alexakis, Dimitris | 1/2-1/2 | A21 | Round 3: Megalios, Konstantinos - Alexakis, Dimitris | 2026-07-06 |
| Megalios, Konstantinos | Kalogeris, Ioannis | 1/2-1/2 | A14 | Greek Chess Cup F4 | 2026-07-03 |
| Megalios, Konstantinos | Malikentzos, Sotirios | 1/2-1/2 | A13 | Round 5: Megalios, Konstantinos - Malikentzos, Sotirios | 2025-07-03 |
| Megalios, Konstantinos | Bizopoulos, Alexandros | 1/2-1/2 | E92 | Round 1: Megalios, Konstantinos - Bizopoulos, Alexandros | 2025-07-03 |
| Megalios, Konstantinos | Mastrovasilis, Dimitrios | 1/2-1/2 | C87 | Round 3: Megalios, Konstantinos - Mastrovasilis, Dimitrios | 2025-07-03 |
| Megalios, Konstantinos | Liodakis, Konstantinos-Spyros | 1/2-1/2 | A58 | Round 6: Megalios, Konstantinos - Liodakis, Konstantinos-Spyros | 2025-07-03 |
| Konstantinos Megalios | Nikolaos Aggelis | 1/2-1/2 | A16 | Round 4: Konstantinos Megalios - Nikolaos Aggelis | 2023-08-29 |
| Konstantinos Megalios | Spyridon Kapnisis | 1-0 | E92 | Round 1: Konstantinos Megalios - Spyridon Kapnisis | 2023-08-29 |
| Megalios, Konstantinos | Alsina Leal, Daniel | 0-1 | A31 | European Individual Chess Championship 2023 | 2023-03-09 |
| Megalios, Konstantinos | Draskovic, Luka | 1-0 | E94 | European Individual Chess Championship 2023 | 2023-03-07 |
| Megalios, Konstantinos | Rasulov, Vugar | 0-1 | E27 | European Individual Chess Championship 2023 | 2023-03-05 |
| Megalios, Konstantinos | Grigoryan, Karen H. | 0-1 | A07 | Guimaraes Chess 2021 | 2021-08-28 |
| Megalios, Konstantinos | Ventura Bolet, Alexandre | 1-0 | E94 | Guimaraes Chess 2021 | 2021-08-27 |
| Megalios, Konstantinos | Puranik, Abhimanyu | 1/2-1/2 | E60 | Serbia Chess Open | Masters | 2021-07-03 |
| Konstantinos Megalios | Samvel Ter-Sahakyan | 0-1 | A09 | Round 9: Konstantinos Megalios - Samvel Ter-Sahakyan | 2021-06-30 |
| Konstantinos Megalios | Aleksa Strikovic | 1-0 | C41 | Round 7: Konstantinos Megalios - Aleksa Strikovic | 2021-06-28 |
| Konstantinos Megalios | Arno Sterck | 1/2-1/2 | B13 | Round 5: Konstantinos Megalios - Arno Sterck | 2021-06-26 |