| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Mercier vs J Cox |
| 1-0 | 19 | 1981 | Manchester Benedictine Open | A00 Uncommon Opening |
| 2. J Mercier vs P Szekely |
| ½-½ | 19 | 1982 | HUN-FRA | A15 English |
| 3. J Mercier vs G Andruet |
| 1-0 | 30 | 1983 | Paris op | A34 English, Symmetrical |
| 4. J Mercier vs H Ree |
| 0-1 | 38 | 1984 | Meudon Open | C12 French, McCutcheon |
| 5. J Mercier vs T Manouck |
| 0-1 | 40 | 1984 | FRA-ch 58th | A46 Queen's Pawn Game |
| 6. J Mercier vs M Hebden |
| 0-1 | 23 | 1984 | Lugano Open | C55 Two Knights Defense |
| 7. J Seret vs J Mercier |
| 1-0 | 24 | 1985 | French Championship | C11 French |
| 8. J Mercier vs P Dussol |
| ½-½ | 44 | 1988 | Val Maubuee | A20 English |
| 9. J Mercier vs I Bilek |
| ½-½ | 14 | 1988 | Val Maubuee | E94 King's Indian, Orthodox |
| 10. M Apicella vs J Mercier |
| 1-0 | 36 | 1988 | Val Maubuee | C41 Philidor Defense |
| 11. J Boudre vs J Mercier |
| ½-½ | 37 | 1988 | Val Maubuee | B40 Sicilian |
| 12. Forintos vs J Mercier |
| 1-0 | 23 | 1988 | Val Maubuee | E70 King's Indian |
| 13. J Mercier vs C Bernard |
| 0-1 | 48 | 1988 | Val Maubuee | E75 King's Indian, Averbakh, Main line |
| 14. J Mercier vs D Pergericht |
| ½-½ | 35 | 1988 | Val Maubuee | D02 Queen's Pawn Game |
| 15. J Mercier vs A Villeneuve |
| 0-1 | 41 | 1988 | Val Maubuee | B40 Sicilian |
| 16. A Zude vs J Mercier |
| ½-½ | 25 | 1988 | Val Maubuee | C05 French, Tarrasch |
| 17. Doyhenard AM vs J Mercier |
 | 0-1 | 28 | 1989 | Urcuit (France) | C46 Three Knights |
| 18. M Hebden vs J Mercier |
| 1-0 | 30 | 1989 | Royan op | B45 Sicilian, Taimanov |
| 19. S Videki vs J Mercier |
| 1-0 | 51 | 1989 | Budapest Spring Open | A55 Old Indian, Main line |
| 20. J Mercier vs A Villeneuve |
| 0-1 | 35 | 1990 | French Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 21. L Roos vs J Mercier |
| 1-0 | 37 | 1990 | French Championship | C03 French, Tarrasch |
| 22. J Mercier vs J Seret |
| ½-½ | 43 | 1990 | French Championship | A41 Queen's Pawn Game (with ...d6) |
| 23. J Koch vs J Mercier |
| 1-0 | 65 | 1990 | French Championship | C13 French |
| 24. J Mercier vs G Andruet |
| ½-½ | 16 | 1990 | French Championship | B80 Sicilian, Scheveningen |
| 25. M Santo-Roman vs J Mercier |
| 1-0 | 24 | 1990 | French Championship | B32 Sicilian |
Kibitzing
