| page 1 of 1; 16 games |
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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. DeFirmian vs N J Patterson |
 | 1-0 | 23 |
1978 |
London (England) | B97 Sicilian, Najdorf |
| 2. DeFirmian vs P Youngworth |
| 1-0 | 43 |
1980 |
Lone Pine | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 3. DeFirmian vs Marjanovic |
| 1-0 | 54 |
1983 |
Vrnjachka Banja (Yugoslavia) | B90 Sicilian, Najdorf |
| 4. DeFirmian vs Barlov |
| 1-0 | 30 |
1983 |
Vrnjachka Banja (Yugoslavia) | B93 Sicilian, Najdorf, 6.f4 |
| 5. DeFirmian vs Tarjan |
| 1-0 | 33 |
1983 |
Ch USA | B94 Sicilian, Najdorf |
| 6. DeFirmian vs S Sandager |
| 1-0 | 25 |
1987 |
New York (USA) | B93 Sicilian, Najdorf, 6.f4 |
| 7. DeFirmian vs Richard Wade |
| 1-0 | 29 |
1989 |
National | B93 Sicilian, Najdorf, 6.f4 |
| 8. DeFirmian vs L Busquets |
| 1-0 | 28 |
1989 |
New York (USA) | B90 Sicilian, Najdorf |
| 9. DeFirmian vs E Tate |
| 1-0 | 51 |
1993 |
World Op A, Philadelphia | B90 Sicilian, Najdorf |
| 10. DeFirmian vs G Thorhallsson |
| 1-0 | 25 |
1994 |
Reykjavik open | B90 Sicilian, Najdorf |
| 11. DeFirmian vs J S Neto |
| 1-0 | 42 |
1996 |
It (cat.13) | B90 Sicilian, Najdorf |
| 12. DeFirmian vs R Ruck |
| 1-0 | 40 |
2000 |
34th Olympiad | B90 Sicilian, Najdorf |
| 13. DeFirmian vs J Aagaard |
| 1-0 | 31 |
2006 |
Politiken Cup | B90 Sicilian, Najdorf |
| 14. DeFirmian vs H Ziska |
| 1-0 | 40 |
2007 |
Politiken Cup | B90 Sicilian, Najdorf |
| 15. DeFirmian vs D Rensch |
| 1-0 | 30 |
2009 |
World Open | B90 Sicilian, Najdorf |
| 16. DeFirmian vs L H P Sousa |
| 1-0 | 43 |
2011 |
Oslo Chess International | B90 Sicilian, Najdorf |
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| page 1 of 1; 16 games |
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