| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Cummings vs Karpov |
| 0-1 | 42 |
1977 |
Lloyds Bank Junior Clock Simul | A14 English |
| 2. D Cummings vs Plaskett |
| 0-1 | 41 |
1977 |
BCF-ch | A30 English, Symmetrical |
| 3. Short vs D Cummings |
 | 0-1 | 29 |
1977 |
BCF-ch | B22 Sicilian, Alapin |
| 4. Van der Sterren vs D Cummings |
| ½-½ | 31 |
1978 |
Lloyds Bank | C19 French, Winawer, Advance |
| 5. Chandler vs D Cummings |
| 1-0 | 32 |
1979 |
Brighton (England) | E12 Queen's Indian |
| 6. D Cummings vs Speelman |
| 0-1 | 28 |
1979 |
Brighton | A14 English |
| 7. A J Whiteley vs D Cummings |
| 1-0 | 33 |
1979 |
Brighton | D76 Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6 |
| 8. D Cummings vs Fedorowicz |
| ½-½ | 45 |
1979 |
Brighton (England) | A15 English |
| 9. D Cummings vs I D Wells |
 | 1-0 | 35 |
1979 |
Brighton | A29 English, Four Knights, Kingside Fianchetto |
| 10. D Cummings vs L Day |
| 0-1 | 40 |
1980 |
Brighton | A10 English |
| 11. M Pein vs D Cummings |
| ½-½ | 27 |
1980 |
BCF-ch | E15 Queen's Indian |
| 12. R Emerson vs D Cummings |
| 1-0 | 26 |
1980 |
County Championship | B46 Sicilian, Taimanov Variation |
| 13. Speelman vs D Cummings |
| 1-0 | 44 |
1983 |
Great Britain (ch) 36/93 | A47 Queen's Indian |
| 14. R Heasman vs D Cummings |
| 1-0 | 55 |
1993 |
Berks & Bucks | A16 English |
| 15. D Cummings vs Petursson |
| 0-1 | 58 |
1994 |
op | D10 Queen's Gambit Declined Slav |
| 16. D Cummings vs S C Brown |
 | 1-0 | 40 |
1994 |
BCF-ch 81st | A80 Dutch |
| 17. D Cummings vs Peter J Sharp |
| ½-½ | 52 |
1995 |
Maidenhead op | E09 Catalan, Closed |
| 18. Christiansen vs D Cummings |
| ½-½ | 64 |
1995 |
It (open) | E77 King's Indian |
| 19. D Cummings vs G Timoshenko |
| 0-1 | 37 |
1996 |
EUCup Gr7 | E17 Queen's Indian |
| 20. D Cummings vs I Rogers |
| ½-½ | 41 |
1996 |
32nd ol Yerevan ARM | E10 Queen's Pawn Game |
| 21. Kotronias vs D Cummings |
| 1-0 | 48 |
1997 |
EU-chT (Men) | B48 Sicilian, Taimanov Variation |
| 22. J Magem Badals vs D Cummings |
| ½-½ | 32 |
1997 |
EU-chT (Men) | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 23. D Cummings vs J Rowson |
| 0-1 | 60 |
1997 |
BCF-chT 9798 (4NCL) | A07 King's Indian Attack |
| 24. D Cummings vs P Cramling |
| ½-½ | 36 |
1997 |
EU-chT (Men) | E92 King's Indian |
| 25. D Cummings vs T Upton |
| ½-½ | 29 |
1997 |
EU-chT (Men) | E05 Catalan, Open, Classical line |