| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. O Zambrana vs A Schenk |
| ½-½ | 61 |
2001 |
WJun | C07 French, Tarrasch |
| 2. O Zambrana vs L Vajda |
| 1-0 | 40 |
2001 |
WJun | C41 Philidor Defense |
| 3. Acs vs O Zambrana |
 | 0-1 | 52 |
2001 |
WJun | B33 Sicilian |
| 4. J Berkvens vs O Zambrana |
| ½-½ | 49 |
2001 |
WJun | E44 Nimzo-Indian, Fischer Variation, 5.Ne2 |
| 5. O Zambrana vs M Karttunen |
| 0-1 | 58 |
2001 |
WJun | B12 Caro-Kann Defense |
| 6. O Zambrana vs T Bakre |
| ½-½ | 42 |
2001 |
WJun | B57 Sicilian |
| 7. O Zambrana vs A Neiksans |
| 0-1 | 73 |
2001 |
WJun | B43 Sicilian, Kan, 5.Nc3 |
| 8. Ni Hua vs O Zambrana |
| 1-0 | 45 |
2001 |
WJun | B31 Sicilian, Rossolimo Variation |
| 9. D Mastrovasilis vs O Zambrana |
| ½-½ | 34 |
2001 |
WJun | B33 Sicilian |
| 10. J Cubas vs O Zambrana |
 | ½-½ | 3 |
2002 |
Bled Olympiad | A00 Uncommon Opening |
| 11. Krasenkow vs O Zambrana |
| 1-0 | 60 |
2002 |
Bled Olympiad | E12 Queen's Indian |
| 12. O Zambrana vs V Magai |
| ½-½ | 19 |
2002 |
Bled Olympiad | C55 Two Knights Defense |
| 13. O Zambrana vs Kotronias |
 | 0-1 | 28 |
2002 |
Bled Olympiad | B43 Sicilian, Kan, 5.Nc3 |
| 14. O Zambrana vs Winants |
| ½-½ | 53 |
2002 |
Bled Olympiad | C50 Giuoco Piano |
| 15. O Zambrana vs Sasikiran |
| 0-1 | 42 |
2002 |
Bled Olympiad | B12 Caro-Kann Defense |
| 16. O Zambrana vs I Abdelnabbi |
 | 1-0 | 48 |
2002 |
Bled Olympiad | C50 Giuoco Piano |
| 17. O Zambrana vs Rodr Fernandez |
| ½-½ | 100 |
2003 |
7th Itau Cup | B05 Alekhine's Defense, Modern |
| 18. O Zambrana vs G Guillermo |
| 1-0 | 41 |
2003 |
Torneo Continental Americano | B12 Caro-Kann Defense |
| 19. O Zambrana vs Granda-Zuniga |
| ½-½ | 32 |
2003 |
zt 2.4 | B90 Sicilian, Najdorf |
| 20. O Zambrana vs S Dumont |
| 1-0 | 39 |
2003 |
7th Itau Cup | B44 Sicilian |
| 21. G Garcia vs O Zambrana |
| ½-½ | 42 |
2003 |
Torneo Continental Americano | B31 Sicilian, Rossolimo Variation |
| 22. E Matsuura vs O Zambrana |
| 1-0 | 37 |
2003 |
7th Itau Cup | B33 Sicilian |
| 23. G Cerda Albornoz vs O Zambrana |
| 0-1 | 41 |
2003 |
Torneo Continental Americano | B33 Sicilian |
| 24. Er Ramos vs O Zambrana |
| 0-1 | 43 |
2003 |
7th Itau Cup | E00 Queen's Pawn Game |
| 25. O Zambrana vs Z Franco-Ocampos |
| 0-1 | 49 |
2003 |
Torneo Continental Americano | B57 Sicilian |