| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G P Thibaut vs O Yepez |
| ½-½ | 41 |
1960 |
Leipzig ol (Men) qual-D | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 2. O Yepez vs B Kerr |
| ½-½ | 27 |
1966 |
Havana ol final-C | E63 King's Indian, Fianchetto, Panno Variation |
| 3. O Yepez vs Parma |
| ½-½ | 20 |
1970 |
Caracas it | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 4. O Yepez vs G Sigurjonsson |
| ½-½ | 39 |
1970 |
Caracas it | B09 Pirc, Austrian Attack |
| 5. G Barcza vs O Yepez |
| ½-½ | 29 |
1970 |
Caracas it | A05 Reti Opening |
| 6. G Villarroel vs O Yepez |
| ½-½ | 42 |
1970 |
Caracas it | B43 Sicilian, Kan, 5.Nc3 |
| 7. O Yepez vs Bisguier |
| ½-½ | 35 |
1970 |
Caracas it | E43 Nimzo-Indian, Fischer Variation |
| 8. O Yepez vs O'Kelly |
| ½-½ | 21 |
1970 |
Caracas it | B49 Sicilian, Taimanov Variation |
| 9. O Yepez vs M Cuellar-Gacharna |
| ½-½ | 46 |
1970 |
Caracas it | B57 Sicilian |