| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Gurevich vs D Haessel |
| 1-0 | 40 |
1994 |
? | A31 English, Symmetrical, Benoni Formation |
| 2. Smirin vs D Haessel |
| 1-0 | 22 |
1997 |
Canada op | B92 Sicilian, Najdorf, Opocensky Variation |
| 3. D Haessel vs Z Gofshtein |
| 0-1 | 40 |
1997 |
Canadian Open | B23 Sicilian, Closed |
| 4. Sasikiran vs D Haessel |
| ½-½ | 63 |
1997 |
Canadian Open | A46 Queen's Pawn Game |
| 5. J M Hodgson vs D Haessel |
 | 1-0 | 26 |
1997 |
Canadian Open | A45 Queen's Pawn Game |
| 6. D Haessel vs R Patterson |
| 0-1 | 46 |
2001 |
Canadian Closed | A20 English |
| 7. D Haessel vs K Ramaswamy |
| 1-0 | 52 |
2001 |
Canadian Closed | A36 English |
| 8. E Urquhart vs D Haessel |
| 1-0 | 24 |
2001 |
Canadian Closed | B23 Sicilian, Closed |
| 9. J Yoos vs D Haessel |
| 0-1 | 24 |
2001 |
Canadian Closed | B95 Sicilian, Najdorf, 6...e6 |
| 10. R Chabot vs D Haessel |
| 1-0 | 29 |
2001 |
Canadian Closed | D91 Grunfeld, 5.Bg5 |
| 11. S Glinert vs D Haessel |
 | 1-0 | 43 |
2001 |
Canadian Closed | B24 Sicilian, Closed |
| 12. D Haessel vs M Khassanov |
| ½-½ | 38 |
2001 |
Canadian Closed | A20 English |
| 13. H Olafsson vs D Haessel |
| 1-0 | 47 |
2003 |
Abe Yanofsky Memorial, Open | A04 Reti Opening |
| 14. K Spraggett vs D Haessel |
| 1-0 | 31 |
2003 |
Abe Yanofsky Memorial, Open | B92 Sicilian, Najdorf, Opocensky Variation |
| 15. D Haessel vs A Nikouline |
| 1-0 | 31 |
2003 |
Abe Yanofsky Memorial, Open | A20 English |
| 16. Shabalov vs D Haessel |
| 1-0 | 26 |
2006 |
Edmonton June Sect-A | B20 Sicilian |
| 17. R Hamilton vs D Haessel |
| 0-1 | 42 |
2006 |
Canadian Closed | D94 Grunfeld |
| 18. R Sasata vs D Haessel |
| 1-0 | 26 |
2006 |
June Sectional | D70 Neo-Grunfeld Defense |
| 19. D Haessel vs C Stevens |
| ½-½ | 23 |
2006 |
Canadian Closed | A23 English, Bremen System, Keres Variation |
| 20. M Khassanov vs D Haessel |
| 1-0 | 30 |
2006 |
Canadian Closed | B92 Sicilian, Najdorf, Opocensky Variation |
| 21. D Haessel vs L Gerzhoy |
 | 0-1 | 24 |
2006 |
Canadian Closed | A36 English |
| 22. D Haessel vs A Kolev |
| 0-1 | 48 |
2007 |
National Open | E04 Catalan, Open, 5.Nf3 |
| 23. D Haessel vs R Robson |
| 0-1 | 57 |
2007 |
New England Masters | D30 Queen's Gambit Declined |
| 24. D Haessel vs V Gaciu |
| 1-0 | 25 |
2009 |
Canadian Open | A96 Dutch, Classical Variation |
| 25. D Haessel vs E Tang |
| 1-0 | 49 |
2009 |
Canadian Open | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |