| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. S Ernst vs J Berkvens |
| 0-1 | 48 | 1997 | NED-ch U20 | C78 Ruy Lopez |
| 2. J Berkvens vs S Ernst |
| 0-1 | 48 | 1998 | NED-ch U20 | C80 Ruy Lopez, Open |
| 3. D de Vreugt vs J Berkvens |
| 1-0 | 33 | 1998 | Dutch Open | C87 Ruy Lopez |
| 4. J Berkvens vs H Jonkman |
| ½-½ | 43 | 1998 | Dutch Open | C63 Ruy Lopez, Schliemann Defense |
| 5. J Berkvens vs G Timmerman |
| 0-1 | 93 | 1998 | Dutch Open | C64 Ruy Lopez, Classical |
| 6. J Berkvens vs M Woudsma |
| 1-0 | 19 | 1998 | Dutch Open | B02 Alekhine's Defense |
| 7. J Berkvens vs J Verwoert |
| 1-0 | 52 | 1998 | Dutch Open | B33 Sicilian |
| 8. R Hendriks vs J Berkvens |
| 0-1 | 27 | 1998 | Dutch Open | C45 Scotch Game |
| 9. J Berkvens vs Nijboer |
| 0-1 | 35 | 1998 | Dutch Open | B42 Sicilian, Kan |
| 10. J van den Bersselaar vs J Berkvens |
| 1-0 | 22 | 1998 | Dutch Open | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 11. A Boer vs J Berkvens |
| 0-1 | 42 | 1998 | Dutch Open | C31 King's Gambit Declined, Falkbeer Counter Gambit |
| 12. E van den Doel vs J Berkvens |
| 1-0 | 40 | 1998 | Lost Boys Open | C87 Ruy Lopez |
| 13. E Dervishi vs J Berkvens |
| 1-0 | 20 | 1999 | Cappelle Open | C87 Ruy Lopez |
| 14. J Berkvens vs C McNab |
| ½-½ | 54 | 1999 | Cappelle Open | B06 Robatsch |
| 15. J Berkvens vs A Keessen |
| 1-0 | 33 | 1999 | NED-ch U20 | B75 Sicilian, Dragon, Yugoslav Attack |
| 16. J Berkvens vs S Ernst |
| ½-½ | 26 | 1999 | NED-ch U20 | C46 Three Knights |
| 17. P Wilschut vs J Berkvens |
| 1-0 | 40 | 1999 | Dutch Open | A04 Reti Opening |
| 18. J Berkvens vs M Azadmanesh |
| 1-0 | 41 | 1999 | Dutch Open | B90 Sicilian, Najdorf |
| 19. N Kabanov vs J Berkvens |
| 0-1 | 43 | 1999 | Dutch Open | C55 Two Knights Defense |
| 20. J Berkvens vs E Hoeksema |
| ½-½ | 35 | 1999 | Dutch Open | B56 Sicilian |
| 21. V Meijers vs J Berkvens |
| 1-0 | 54 | 1999 | Dutch Open | C60 Ruy Lopez |
| 22. J Berkvens vs P Doggers |
| 1-0 | 17 | 1999 | Dutch Open | B42 Sicilian, Kan |
| 23. A Rabinovich vs J Berkvens |
| 0-1 | 53 | 1999 | Dutch Open | A80 Dutch |
| 24. J Berkvens vs Hort |
| 0-1 | 39 | 1999 | Dutch Open | B02 Alekhine's Defense |
| 25. M Solleveld vs J Berkvens |
| 1-0 | 35 | 1999 | Dutch Open | C78 Ruy Lopez |
Kibitzing
