| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Acs vs O Zambrana |
 | 0-1 | 52 |
2001 |
WJun | B33 Sicilian |
| 2. J Berkvens vs O Zambrana |
| ½-½ | 49 |
2001 |
WJun | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 3. O Zambrana vs M Karttunen |
| 0-1 | 58 |
2001 |
WJun | B12 Caro-Kann Defense |
| 4. O Zambrana vs T Bakre |
| ½-½ | 42 |
2001 |
WJun | B57 Sicilian |
| 5. O Zambrana vs A Neiksans |
| 0-1 | 73 |
2001 |
WJun | B43 Sicilian, Kan, 5.Nc3 |
| 6. Ni Hua vs O Zambrana |
| 1-0 | 45 |
2001 |
WJun | B31 Sicilian, Rossolimo Variation |
| 7. D Mastrovasilis vs O Zambrana |
| ½-½ | 34 |
2001 |
WJun | B33 Sicilian |
| 8. O Zambrana vs A Schenk |
| ½-½ | 61 |
2001 |
WJun | C07 French, Tarrasch |
| 9. O Zambrana vs L Vajda |
| 1-0 | 40 |
2001 |
WJun | C41 Philidor Defense |
| 10. O Zambrana vs Winants |
| ½-½ | 53 |
2002 |
Bled Olympiad | C50 Giuoco Piano |
| 11. O Zambrana vs Sasikiran |
| 0-1 | 42 |
2002 |
Bled Olympiad | B12 Caro-Kann Defense |
| 12. O Zambrana vs I Abdelnabbi |
 | 1-0 | 48 |
2002 |
Bled Olympiad | C50 Giuoco Piano |
| 13. J Cubas vs O Zambrana |
 | ½-½ | 3 |
2002 |
Bled Olympiad | A00 Uncommon Opening |
| 14. Krasenkow vs O Zambrana |
| 1-0 | 60 |
2002 |
Bled Olympiad | E12 Queen's Indian |
| 15. O Zambrana vs V Magai |
| ½-½ | 19 |
2002 |
Bled Olympiad | C55 Two Knights Defense |
| 16. O Zambrana vs Kotronias |
 | 0-1 | 28 |
2002 |
Bled Olympiad | B43 Sicilian, Kan, 5.Nc3 |
| 17. O Zambrana vs I Morovic |
| 0-1 | 32 |
2003 |
Torneo Continental Americano | B57 Sicilian |
| 18. I Novikov vs O Zambrana |
| ½-½ | 43 |
2003 |
Torneo Continental Americano | E17 Queen's Indian |
| 19. O Zambrana vs F Olivencia |
| 1-0 | 31 |
2003 |
7th Itau Cup | B89 Sicilian |
| 20. A Rodriguez vs O Zambrana |
 | 1-0 | 44 |
2003 |
Torneo Continental Americano | B33 Sicilian |
| 21. O Zambrana vs Jo Molina |
| ½-½ | 67 |
2003 |
7th Itau Cup | A16 English |
| 22. C Ustariz vs O Zambrana |
| 0-1 | 21 |
2003 |
Torneo Continental Americano | E38 Nimzo-Indian, Classical, 4...c5 |
| 23. O Zambrana vs Daniel Mieles |
| 1-0 | 35 |
2003 |
Torneo Continental Americano | B33 Sicilian |
| 24. K Mafra vs O Zambrana |
| 0-1 | 25 |
2003 |
7th Itau Cup | E26 Nimzo-Indian, Samisch |
| 25. O Zambrana vs D Valerga |
| ½-½ | 46 |
2003 |
Torneo Continental Americano | B12 Caro-Kann Defense |