| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J M Cummins vs M Babula |
| 0-1 | 30 | 1974 | World Student Team Championship qual-4 | A00 Uncommon Opening |
| 2. J M Cummins vs G Michalet |
| 1-0 | 45 | 1974 | World Student Team Championship qual-4 | A01 Nimzovich-Larsen Attack |
| 3. J M Cummins vs J Pichardo |
| 1-0 | 22 | 1974 | World Student Team Championship qual-4 | A01 Nimzovich-Larsen Attack |
| 4. A Poulsen vs J M Cummins |
| 0-1 | 40 | 1974 | World Student Team Championship qual-4 | B06 Robatsch |
| 5. A Zichichi vs J M Cummins |
| 1-0 | 32 | 1975 | 1st EEC Team Championship | B06 Robatsch |
| 6. J M Cummins vs N Giffard |
| ½-½ | 23 | 1975 | 1st EEC Team Championship | A01 Nimzovich-Larsen Attack |
| 7. R Nilles vs J M Cummins |
| ½-½ | 41 | 1975 | 1st EEC Team Championship | A31 English, Symmetrical, Benoni Formation |
| 8. J M Cummins vs P Mack |
| 0-1 | 38 | 1975 | 1st EEC Team Championship | A01 Nimzovich-Larsen Attack |
| 9. J M Cummins vs E Brondum |
| ½-½ | 59 | 1975 | 1st EEC Team Championship | E62 King's Indian, Fianchetto |
| 10. J M Cummins vs A Mirzoev |
| 0-1 | 32 | 2000 | Istanbul Olympiad | B50 Sicilian |
| 11. J M Cummins vs P Dukaczewski |
| 0-1 | 28 | 2000 | Istanbul Olympiad | B17 Caro-Kann, Steinitz Variation |
| 12. S Kantinti vs J M Cummins |
 | 1-0 | 24 | 2000 | Istanbul Olympiad | B56 Sicilian |
| 13. J M Cummins vs D Doell |
| 0-1 | 52 | 2001 | Guernsey Open | B21 Sicilian, 2.f4 and 2.d4 |
| 14. J Kamps vs J M Cummins |
| 1-0 | 33 | 2001 | Guernsey Open | C33 King's Gambit Accepted |
| 15. M Ruston vs J M Cummins |
| 1-0 | 33 | 2001 | Guernsey Open | C45 Scotch Game |
| 16. J M Cummins vs N Dennis |
| 0-1 | 64 | 2001 | Guernsey Open | B21 Sicilian, 2.f4 and 2.d4 |
| 17. S Alley vs J M Cummins |
| 0-1 | 37 | 2001 | Guernsey Open | D53 Queen's Gambit Declined |
| 18. J M Cummins vs A Gravett |
| ½-½ | 41 | 2001 | Guernsey Open | B90 Sicilian, Najdorf |
| 19. A Hughes vs J M Cummins |
| 1-0 | 39 | 2001 | Guernsey Open | C58 Two Knights |
| 20. J M Cummins vs S Ghane |
| 0-1 | 38 | 2002 | Bled Olympiad | C05 French, Tarrasch |
| 21. D Rowe vs J M Cummins |
| 1-0 | 20 | 2002 | Bled Olympiad | C41 Philidor Defense |
| 22. J Pinheiro vs J M Cummins |
| 1-0 | 29 | 2004 | Calvia Olympiad | A13 English |
| 23. A Calabrese vs J M Cummins |
| 1-0 | 32 | 2004 | Calvia Olympiad | B28 Sicilian, O'Kelly Variation |
| 24. S Wilkinson vs J M Cummins |
| ½-½ | 29 | 2004 | Calvia Olympiad | B28 Sicilian, O'Kelly Variation |
| 25. J M Cummins vs R Porter |
| 0-1 | 64 | 2004 | Calvia Olympiad | D00 Queen's Pawn Game |
Kibitzing
