| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M Vassallo vs D Norwood |
| ½-½ | 47 |
1988 |
Benidorm/SW,22,15 | A46 Queen's Pawn Game |
| 2. M Vassallo vs F Braga |
| ½-½ | 14 |
1992 |
6, Alicante op (10s) | A07 King's Indian Attack |
| 3. Jose Francisco Munoz Agullo vs M Vassallo |
| 0-1 | 38 |
1996 |
Mislata op 5th | E80 King's Indian, Samisch Variation |
| 4. Ponomariov vs M Vassallo |
| 1-0 | 33 |
1997 |
Alicante op | B09 Pirc, Austrian Attack |
| 5. M Vassallo vs Kharlov |
| 0-1 | 32 |
1999 |
Malaga op 2nd | A06 Reti Opening |
| 6. O Korneev vs M Vassallo |
| 1-0 | 37 |
1999 |
Malaga Open | B01 Scandinavian |
| 7. M Vassallo vs P Ricardi |
| 1-0 | 51 |
1999 |
Malaga op 2nd | E62 King's Indian, Fianchetto |
| 8. A Kovacevic vs M Vassallo |
| 1-0 | 49 |
2000 |
Mallorca op | C41 Philidor Defense |
| 9. M Vassallo vs V Ikonnikov |
| ½-½ | 13 |
2000 |
8th Loures Masters | A14 English |
| 10. D Fernando vs M Vassallo |
| ½-½ | 41 |
2001 |
43rd Tch-POR | B07 Pirc |
| 11. P Petran vs M Vassallo |
| ½-½ | 41 |
2001 |
ECC | A00 Uncommon Opening |
| 12. M Narciso Dublan vs M Vassallo |
| ½-½ | 90 |
2001 |
TCh-ESP | B08 Pirc, Classical |
| 13. J Francisco vs M Vassallo |
| 0-1 | 30 |
2001 |
9th YM | A43 Old Benoni |
| 14. J C Ibarra Jerez vs M Vassallo |
| ½-½ | 48 |
2001 |
Narciso Yepes | B08 Pirc, Classical |
| 15. Pelletier vs M Vassallo |
| 1-0 | 35 |
2001 |
ECC | A41 Queen's Pawn Game (with ...d6) |
| 16. V Georgiev vs M Vassallo |
| ½-½ | 46 |
2001 |
9th YM | E43 Nimzo-Indian, Fischer Variation |
| 17. M Vassallo vs N Lanier |
| 1-0 | 29 |
2001 |
43rd Tch-POR | A04 Reti Opening |
| 18. M Vassallo vs Y Kruppa |
 | ½-½ | 35 |
2001 |
ECC | A07 King's Indian Attack |
| 19. M Vassallo vs L J Bernal Moro |
| ½-½ | 11 |
2001 |
TCh-ESP | A45 Queen's Pawn Game |
| 20. M Vassallo vs P Silva |
| 0-1 | 69 |
2001 |
9th YM | A00 Uncommon Opening |
| 21. M Vassallo vs F Garcia Albarracin |
| 1-0 | 22 |
2001 |
Narciso Yepes | A46 Queen's Pawn Game |
| 22. M Vassallo vs N Stanec |
| 0-1 | 37 |
2001 |
ECC | A04 Reti Opening |
| 23. M Vassallo vs B Andrade |
| 1-0 | 33 |
2001 |
9th YM | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 24. M Vassallo vs S Rocha |
| 1-0 | 55 |
2001 |
43rd Tch-POR | A06 Reti Opening |
| 25. E Keogh vs M Vassallo |
 | 0-1 | 38 |
2001 |
ECC | B21 Sicilian, 2.f4 and 2.d4 |