| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Mateo vs Nunn |
| 0-1 | 39 |
1978 |
Buenos Aires | B53 Sicilian |
| 2. R Mateo vs DeFirmian |
| 0-1 | 42 |
1980 |
Olympiad | A14 English |
| 3. R Mateo vs R Nokes |
| 1-0 | 26 |
1982 |
Luzern ol (Men) | C11 French |
| 4. Suttles vs R Mateo |
| 1-0 | 36 |
1982 |
Olympiad Lucerne (Switzerland) | A00 Uncommon Opening |
| 5. R Mateo vs F Braga |
| 1-0 | 42 |
1984 |
10s, Bayamo CUB [Hiarcs 7.32 | D34 Queen's Gambit Declined, Tarrasch |
| 6. R Mateo vs K Spraggett |
| ½-½ | 45 |
1986 |
Dubai olm | B31 Sicilian, Rossolimo Variation |
| 7. R Mateo vs R Byrne |
| 1-0 | 32 |
1986 |
New York | B93 Sicilian, Najdorf, 6.f4 |
| 8. R Mateo vs V Lukov |
| 1-0 | 31 |
1986 |
Rio Gallegos | B93 Sicilian, Najdorf, 6.f4 |
| 9. R Mateo vs Xu Jun |
| 0-1 | 71 |
1986 |
Dubai olm | C80 Ruy Lopez, Open |
| 10. Smejkal vs R Mateo |
| 1-0 | 52 |
1986 |
Dubai ol (Men) | A15 English |
| 11. T Palmer vs R Mateo |
 | 0-1 | 31 |
1986 |
Pan-Am Intercollegiate Team Championship | B23 Sicilian, Closed |
| 12. Anand vs R Mateo |
 | 1-0 | 35 |
1986 |
Dubai | B63 Sicilian, Richter-Rauzer Attack |
| 13. R Mateo vs K Spraggett |
| ½-½ | 45 |
1986 |
Olympiades de Dubai | B31 Sicilian, Rossolimo Variation |
| 14. R Mateo vs P Popovic |
| 1-0 | 39 |
1986 |
New York | B93 Sicilian, Najdorf, 6.f4 |
| 15. R Mateo vs Kotronias |
| ½-½ | 26 |
1988 |
Thessaloniki | B48 Sicilian, Taimanov Variation |
| 16. R Mateo vs Korchnoi |
 | 0-1 | 36 |
1988 |
Thessaloniki olm | C14 French, Classical |
| 17. Ftacnik vs R Mateo |
| 1-0 | 40 |
1988 |
Thessaloniki olm | E15 Queen's Indian |
| 18. REBEL vs R Mateo |
| 1-0 | 30 |
1997 |
SANTO DOMINGO,SAMANEL III | E00 Queen's Pawn Game |
| 19. R Mateo vs Chessmaster |
| ½-½ | 40 |
1997 |
SANTO DOMINGO,SAMANEL III | D37 Queen's Gambit Declined |
| 20. REBEL vs R Mateo |
| 1-0 | 30 |
1998 |
4ta. COPA SAMANEL | E15 Queen's Indian |
| 21. R Mateo vs Chessmaster |
| 0-1 | 29 |
1998 |
4ta. COPA SAMANEL | D20 Queen's Gambit Accepted |
| 22. R Mateo vs HIARCS |
| 0-1 | 29 |
1998 |
4ta. COPA SAMANEL | E05 Catalan, Open, Classical line |
| 23. Radjabov vs R Mateo |
| ½-½ | 30 |
2000 |
Biel MTO op | E20 Nimzo-Indian |
| 24. R Mateo vs Aronian |
 | 0-1 | 40 |
2000 |
Ubeda op 5th | B34 Sicilian, Accelerated Fianchetto |
| 25. H Pecorelli Garcia vs R Mateo |
| ½-½ | 29 |
2001 |
XXXVI Capablanca Mem Premier I | A22 English |