| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 776. D Mastrovasilis vs K Drozdowski |
| 0-1 | 41 | 2022 | European Rapid Chess Championship | B40 Sicilian |
| 777. D Mastrovasilis vs J Remolar Gallen |
| 1-0 | 30 | 2023 | European Championship | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 778. R Stalmach vs D Mastrovasilis |
| 0-1 | 56 | 2023 | European Championship | D15 Queen's Gambit Declined Slav |
| 779. D Mastrovasilis vs E Zanan |
| 1-0 | 60 | 2023 | European Championship | C01 French, Exchange |
| 780. S Kourkoulos-Arditis vs D Mastrovasilis |
| ½-½ | 33 | 2023 | European Championship | C65 Ruy Lopez, Berlin Defense |
| 781. D Mastrovasilis vs G Sargissian |
| ½-½ | 29 | 2023 | European Championship | C47 Four Knights |
| 782. J Moussard vs D Mastrovasilis |
| ½-½ | 56 | 2023 | European Championship | D12 Queen's Gambit Declined Slav |
| 783. Navara vs D Mastrovasilis |
| ½-½ | 66 | 2023 | European Championship | D35 Queen's Gambit Declined |
| 784. D Mastrovasilis vs Y Parkhov |
| 0-1 | 53 | 2023 | European Championship | C43 Petrov, Modern Attack |
| 785. U Sadikhov vs D Mastrovasilis |
| 0-1 | 62 | 2023 | European Championship | A06 Reti Opening |
| 786. D Mastrovasilis vs P Velten |
| ½-½ | 81 | 2023 | European Championship | C02 French, Advance |
| 787. N Djukic vs D Mastrovasilis |
| ½-½ | 26 | 2023 | European Championship | C80 Ruy Lopez, Open |
| 788. D Mastrovasilis vs M Lazic |
| 1-0 | 34 | 2023 | 54th Italian Teams GpB | B01 Scandinavian |
| 789. Y Yu vs D Mastrovasilis |
 | 1-0 | 21 | 2023 | Sharjah Masters | A13 English |
| 790. D Mastrovasilis vs M Kobalia |
| ½-½ | 81 | 2023 | Sharjah Masters | C78 Ruy Lopez |
| 791. J Tin vs D Mastrovasilis |
| 1-0 | 43 | 2023 | Sharjah Masters | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 792. D Mastrovasilis vs M Petkov |
| ½-½ | 27 | 2023 | Sharjah Masters | B30 Sicilian |
| 793. L van Foreest vs D Mastrovasilis |
| ½-½ | 20 | 2023 | Sharjah Masters | B40 Sicilian |
| 794. D Mastrovasilis vs E Can |
| 1-0 | 37 | 2023 | Sharjah Masters | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 795. B Adhiban vs D Mastrovasilis |
| 1-0 | 37 | 2023 | Sharjah Masters | E06 Catalan, Closed, 5.Nf3 |
| 796. S P Sethuraman vs D Mastrovasilis |
| ½-½ | 37 | 2023 | Sharjah Masters | D30 Queen's Gambit Declined |
| 797. D Mastrovasilis vs Mishra |
| ½-½ | 77 | 2023 | Sharjah Masters | B90 Sicilian, Najdorf |
| 798. D Mastrovasilis vs F Blohberger |
 | 1-0 | 32 | 2023 | FIDE World Cup | C45 Scotch Game |
| 799. F Blohberger vs D Mastrovasilis |
| 1-0 | 41 | 2023 | FIDE World Cup | B45 Sicilian, Taimanov |
| 800. D Mastrovasilis vs F Blohberger |
| 1-0 | 38 | 2023 | FIDE World Cup | C11 French |
Kibitzing
