| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Leppala vs M Trepp |
| 0-1 | 25 | 1980 | International Junior Tournament | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 2. M Trepp vs M Andersen |
| ½-½ | 43 | 1980 | International Junior Tournament | B01 Scandinavian |
| 3. C Pieper-Emden vs M Trepp |
| 0-1 | 36 | 1980 | International Junior Tournament | A17 English |
| 4. M Trepp vs C Hansen |
| 0-1 | 32 | 1980 | International Junior Tournament | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 5. M Trepp vs J Norgaard |
| 1-0 | 70 | 1980 | International Junior Tournament | C45 Scotch Game |
| 6. M Trepp vs E Desmyter |
| 1-0 | 36 | 1980 | International Junior Tournament | C64 Ruy Lopez, Classical |
| 7. E Jelling vs M Trepp |
| 0-1 | 23 | 1980 | International Junior Tournament | B20 Sicilian |
| 8. M Trepp vs L Schandorff |
| 1-0 | 38 | 1980 | International Junior Tournament | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 9. C Hartman vs M Trepp |
| 1-0 | 26 | 1980 | International Junior Tournament | E41 Nimzo-Indian |
| 10. M Trepp vs K Bischoff |
 | 0-1 | 31 | 1981 | Suedlohn | B04 Alekhine's Defense, Modern |
| 11. G Franzoni vs M Trepp |
| ½-½ | 18 | 1981 | Suedlohn | A04 Reti Opening |
| 12. J Blaskowski vs M Trepp |
| 0-1 | 54 | 1981 | Suedlohn | B62 Sicilian, Richter-Rauzer |
| 13. M Santo-Roman vs M Trepp |
| 1-0 | 42 | 1981 | Suedlohn | B62 Sicilian, Richter-Rauzer |
| 14. P Weber vs M Trepp |
| 1-0 | 46 | 1981 | Suedlohn | E12 Queen's Indian |
| 15. M Trepp vs J Boehm |
| 1-0 | 42 | 1981 | Suedlohn | C05 French, Tarrasch |
| 16. M Trepp vs H Vetter |
| ½-½ | 18 | 1981 | Suedlohn | B41 Sicilian, Kan |
| 17. M Trepp vs N Sehner |
| ½-½ | 38 | 1981 | Suedlohn | B50 Sicilian |
| 18. M Trepp vs J Fleck |
| ½-½ | 21 | 1981 | Suedlohn | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 19. S Buecker vs M Trepp |
| 0-1 | 43 | 1981 | Suedlohn | A07 King's Indian Attack |
| 20. M Trepp vs R Kuijf |
| 0-1 | 39 | 1981 | Suedlohn | B81 Sicilian, Scheveningen, Keres Attack |
| 21. C Bergstrom vs M Trepp |
| ½-½ | 32 | 1981 | Suedlohn | A19 English, Mikenas-Carls, Sicilian Variation |
| 22. M Trepp vs K Panczyk |
| ½-½ | 45 | 1981 | Suedlohn | C45 Scotch Game |
| 23. N Birnboim vs M Trepp |
| 1-0 | 35 | 1981 | Biel MTO Open | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 24. M Trepp vs R Hamilton |
| 1-0 | 13 | 1981 | World Junior Championship | C45 Scotch Game |
| 25. M Trepp vs G Cools |
| 1-0 | 38 | 1981 | World Junior Championship | C77 Ruy Lopez |
Kibitzing
