Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. A Ulmanis vs D Mastrovasilis |
 | 0-1 | 31 | 1992 | EU-ch U10 | C30 King's Gambit Declined |
2. P Chilingirova vs D Mastrovasilis |
 | 1-0 | 21 | 1992 | Komotini Open | E70 King's Indian |
3. Bacrot vs D Mastrovasilis |
  | 1-0 | 39 | 1992 | Wch U10 | E85 King's Indian, Samisch, Orthodox Variation |
4. K Jakubowski vs D Mastrovasilis |
| ½-½ | 60 | 1993 | EU-ch U10 | C47 Four Knights |
5. Ganguly vs D Mastrovasilis |
| 1-0 | 73 | 1993 | Wch U10 | C45 Scotch Game |
6. D Mastrovasilis vs Bacrot |
 | ½-½ | 15 | 1993 | EU-ch U10 | B01 Scandinavian |
7. Bacrot vs D Mastrovasilis |
| 1-0 | 66 | 1993 | Wch U10 | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
8. R Memekidou vs D Mastrovasilis |
| 0-1 | 17 | 1993 | Komotini GP | A00 Uncommon Opening |
9. V Akobian vs D Mastrovasilis |
| ½-½ | 51 | 1994 | EU-ch U12 | E99 King's Indian, Orthodox, Taimanov |
10. Aronian vs D Mastrovasilis |
 | 0-1 | 16 | 1994 | EU-ch U12 | B46 Sicilian, Taimanov Variation |
11. Grischuk vs D Mastrovasilis |
| 1-0 | 29 | 1995 | EU-ch U12 | B42 Sicilian, Kan |
12. D Mastrovasilis vs A Wirig |
| 1-0 | 43 | 1995 | EU-ch U12 | B01 Scandinavian |
13. Ganguly vs D Mastrovasilis |
| 1-0 | 48 | 1996 | Wch U14 | B47 Sicilian, Taimanov (Bastrikov) Variation |
14. V Akobian vs D Mastrovasilis |
| 1-0 | 90 | 1996 | EU-ch U14 | D00 Queen's Pawn Game |
15. V Akobian vs D Mastrovasilis |
 | ½-½ | 22 | 1996 | Wch U14 | D45 Queen's Gambit Declined Semi-Slav |
16. K Rusev vs D Mastrovasilis |
| 0-1 | 39 | 1997 | Wch U14 | D02 Queen's Pawn Game |
17. T Yilmaz vs D Mastrovasilis |
| 0-1 | 52 | 1997 | Athens Akropolis op | B47 Sicilian, Taimanov (Bastrikov) Variation |
18. D Mastrovasilis vs A Greenfeld |
| 0-1 | 44 | 1998 | Korinthos op 2nd | B62 Sicilian, Richter-Rauzer |
19. I Dorfanis vs D Mastrovasilis |
 | 0-1 | 36 | 1998 | GRE-chT | D10 Queen's Gambit Declined Slav |
20. I Nikolaidis vs D Mastrovasilis |
 | 1-0 | 33 | 1998 | 48th Greek Championship | D31 Queen's Gambit Declined |
21. E Grivas vs D Mastrovasilis |
 | 0-1 | 57 | 1998 | 48th Greek Championship | A11 English, Caro-Kann Defensive System |
22. I Papaioannou vs D Mastrovasilis |
 | 1-0 | 77 | 1998 | 48th Greek Championship | D30 Queen's Gambit Declined |
23. D Mastrovasilis vs V Akobian |
| ½-½ | 11 | 1999 | EU-ch U16 | B01 Scandinavian |
24. Yusupov vs D Mastrovasilis |
| 1-0 | 68 | 1999 | GRE-GER m | D31 Queen's Gambit Declined |
25. D Mastrovasilis vs C Lutz |
  | 0-1 | 35 | 1999 | GRE-GER m | B80 Sicilian, Scheveningen |