| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. T Gelashvili vs A Mastrovasilis |
| ½-½ | 55 |
1994 |
EU-ch U18 | A13 English |
| 2. Kasimdzhanov vs A Mastrovasilis |
| ½-½ | 46 |
1995 |
Wch U16 | A46 Queen's Pawn Game |
| 3. A Mastrovasilis vs Sadvakasov |
| 1-0 | 46 |
1995 |
Wch U16 | E80 King's Indian, Samisch Variation |
| 4. A Mastrovasilis vs G Theodorakopoulos |
| 1-0 | 26 |
1996 |
GRE-chT Athens | E87 King's Indian, Samisch, Orthodox |
| 5. A Mastrovasilis vs I Miladinovic |
| 1-0 | 31 |
1996 |
Kavala op 6th | D07 Queen's Gambit Declined, Chigorin Defense |
| 6. M Turov vs A Mastrovasilis |
| 1-0 | 67 |
1996 |
EU-ch U18 | C77 Ruy Lopez |
| 7. Ponomariov vs A Mastrovasilis |
| 1-0 | 40 |
1996 |
EU-ch U18 | C49 Four Knights |
| 8. I Papaioannou vs A Mastrovasilis |
 | ½-½ | 61 |
1998 |
48th Greek Championships | E00 Queen's Pawn Game |
| 9. A Mastrovasilis vs T Gelashvili |
| 0-1 | 36 |
1998 |
Ikaria op | A42 Modern Defense, Averbakh System |
| 10. A Mastrovasilis vs T Gelashvili |
| 1-0 | 29 |
1998 |
Kavala op 8th | E43 Nimzo-Indian, Fischer Variation |
| 11. A Mastrovasilis vs I Nikolaidis |
| 0-1 | 39 |
1998 |
48th Greek Championships | A41 Queen's Pawn Game (with ...d6) |
| 12. T Gelashvili vs A Mastrovasilis |
| 1-0 | 37 |
1998 |
Korinthos op 2nd | A07 King's Indian Attack |
| 13. A Mastrovasilis vs E Bribos |
| ½-½ | 32 |
1999 |
Tower op | A15 English |
| 14. S Halkias vs A Mastrovasilis |
| 1-0 | 56 |
2000 |
Greek Chess Championship | D38 Queen's Gambit Declined, Ragozin Variation |
| 15. A Mastrovasilis vs I Nikolaidis |
| ½-½ | 7 |
2000 |
Greek Chess Championship | B06 Robatsch |
| 16. H Banikas vs A Mastrovasilis |
| ½-½ | 17 |
2000 |
Greek Chess Championship | E10 Queen's Pawn Game |
| 17. A Mastrovasilis vs K Georgiou |
| 1-0 | 34 |
2001 |
open | D45 Queen's Gambit Declined Semi-Slav |
| 18. A Mastrovasilis vs D Stojanovski |
| ½-½ | 13 |
2001 |
ch-Balkan | A15 English |
| 19. A Mastrovasilis vs F Boudalakis |
| 1-0 | 20 |
2001 |
3rd Open | B20 Sicilian |
| 20. A Mastrovasilis vs S Halkias |
| 1-0 | 37 |
2001 |
Antalya TUR | A13 English |
| 21. A Pimenidis vs A Mastrovasilis |
| 0-1 | 16 |
2001 |
open | B23 Sicilian, Closed |
| 22. H Erdogan vs A Mastrovasilis |
| ½-½ | 83 |
2001 |
ch-Balkan | E25 Nimzo-Indian, Samisch |
| 23. A Moroz vs A Mastrovasilis |
 | 1-0 | 40 |
2001 |
Antalya TUR | C68 Ruy Lopez, Exchange |
| 24. A Mastrovasilis vs T Papadopoulou |
| 1-0 | 40 |
2001 |
3rd Open | A05 Reti Opening |
| 25. Kiril Georgiev vs A Mastrovasilis |
| ½-½ | 17 |
2001 |
Antalya TUR | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |