| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Sahovic vs DeFirmian |
| ½-½ | 57 |
1984 |
Bor (Yugoslavia) | A70 Benoni, Classical with 7.Nf3 |
| 2. Miles vs DeFirmian |
| ½-½ | 45 |
1989 |
Ch USA | A70 Benoni, Classical with 7.Nf3 |
| 3. Zsuzsa Polgar vs DeFirmian |
 | 1-0 | 50 |
1989 |
New York (USA) | A70 Benoni, Classical with 7.Nf3 |
| 4. Alburt vs DeFirmian |
 | 1-0 | 42 |
1990 |
Ch USA | A70 Benoni, Classical with 7.Nf3 |
| 5. Alburt vs DeFirmian |
 | 1-0 | 17 |
1990 |
Ch USA | A70 Benoni, Classical with 7.Nf3 |
| 6. J Benjamin vs DeFirmian |
| 1-0 | 37 |
1993 |
New York op (08) | A70 Benoni, Classical with 7.Nf3 |
| 7. Browne vs DeFirmian |
 | 1-0 | 47 |
1994 |
Key West USA | A70 Benoni, Classical with 7.Nf3 |
| 8. W Schmidt vs DeFirmian |
| 0-1 | 29 |
1994 |
It (open) | A70 Benoni, Classical with 7.Nf3 |
| 9. I Ibragimov vs DeFirmian |
| ½-½ | 21 |
1994 |
It (open) | A70 Benoni, Classical with 7.Nf3 |
| 10. H Olafsson vs DeFirmian |
| 0-1 | 25 |
1994 |
It (open) | A70 Benoni, Classical with 7.Nf3 |
| 11. B Ahlander vs DeFirmian |
| 0-1 | 37 |
1994 |
Cup Rilton | A70 Benoni, Classical with 7.Nf3 |
| 12. Akopian vs DeFirmian |
| ½-½ | 44 |
1994 |
It (open) | A70 Benoni, Classical with 7.Nf3 |
| 13. Gavrikov vs DeFirmian |
| ½-½ | 21 |
1995 |
It (cat.15) | A70 Benoni, Classical with 7.Nf3 |
| 14. Dreev vs DeFirmian |
 | 1-0 | 27 |
1995 |
It (cat.15) | A70 Benoni, Classical with 7.Nf3 |
| 15. A Sorin vs DeFirmian |
 | 0-1 | 34 |
1995 |
It (cat.11) | A70 Benoni, Classical with 7.Nf3 |
| 16. Krasenkow vs DeFirmian |
 | 1-0 | 71 |
1995 |
It (cat.14) | A70 Benoni, Classical with 7.Nf3 |
| 17. P Wells vs DeFirmian |
| ½-½ | 24 |
1996 |
Copenhagen (Denmark) | A70 Benoni, Classical with 7.Nf3 |
| 18. J A Nilssen vs DeFirmian |
| 0-1 | 36 |
2001 |
Politiken Cup | A70 Benoni, Classical with 7.Nf3 |
| 19. J Benjamin vs DeFirmian |
| ½-½ | 12 |
2002 |
ch-USA | A70 Benoni, Classical with 7.Nf3 |
| 20. R Burnett vs DeFirmian |
| 0-1 | 41 |
2003 |
US Championships 2003 | A70 Benoni, Classical with 7.Nf3 |
| 21. Paschall vs DeFirmian |
| ½-½ | 58 |
2003 |
US Championships 2003 | A70 Benoni, Classical with 7.Nf3 |
| 22. Epishin vs DeFirmian |
 | 1-0 | 36 |
2005 |
HB Global Chess Challenge | A70 Benoni, Classical with 7.Nf3 |
| 23. D Sharavdorj vs DeFirmian |
| 1-0 | 59 |
2005 |
National Open | A70 Benoni, Classical with 7.Nf3 |