6 games · 2015–2021 · 6 classical · 0 online
Mastrovasilis 24 draws0 Theodorou
66.7% for Mastrovasilis
Openings between them
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1 | 50.0% |
| C66 | Ruy Lopez: Berlin Defense, Closed Wolf Variation | 1 | 100.0% |
| D10 | Slav Defense: Exchange Variation | 1 | 50.0% |
| D11 | Slav Defense: Breyer Variation | 1 | 100.0% |
| E05 | Catalan Opening: Open Defense, Classical Line | 1 | 50.0% |
| E64 | King's Indian Defense: Fianchetto Variation, Double Fianchetto Attack | 1 | 50.0% |
All games
| Theodorou, Nikolas2569 | ½-½ | Mastrovasilis, A2518 | 30th Kavala Open 2021 | 2021 |
| Theodorou, Nikolas2543 | ½-½ | Mastrovasilis, A2518 | 47th TCh-GRE 2019 | 2019 |
| Theodorou, Nikolas2513 | ½-½ | Mastrovasilis, A2497 | 46th TCh-GRE 2018 | 2018 |
| Mastrovasilis, A2492 | ½-½ | Theodorou, Nikolas2498 | 45th TCh-GRE 2017 | 2017 |
| Mastrovasilis, A2536 | 1-0 | Theodorou, Nikolas2449 | 43rd TCh-GRE 2015 | 2015 |
| Theodorou, Nikolas2334 | 0-1 | Mastrovasilis, A2506 | Karpos Open 2015 | 2015 |