| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Panno vs R Cassidy |
| 1-0 | 26 |
1966 |
Havana ol prelim | E68 King's Indian, Fianchetto, Classical Variation, 8.e4 |
| 2. J Enevoldsen vs R Cassidy |
| 1-0 | 29 |
1966 |
Havana ol prelim | B01 Scandinavian |
| 3. Salvador Diaz vs R Cassidy |
| 1-0 | 24 |
1966 |
Havana ol final-C | B06 Robatsch |
| 4. R Cassidy vs N Ornithopoulos |
| 1-0 | 88 |
1966 |
Havana ol final-C | E91 King's Indian |
| 5. R Belkadi vs R Cassidy |
| 1-0 | 33 |
1966 |
Havana ol final-C | B09 Pirc, Austrian Attack |
| 6. Teschner vs R Cassidy |
| 1-0 | 34 |
1967 |
EU-chT (prelim) | C73 Ruy Lopez, Modern Steinitz Defense |
| 7. Pedersen vs R Cassidy |
| 1-0 | 34 |
1967 |
EU-chT (prelim) | C47 Four Knights |
| 8. A Kaldor vs R Cassidy |
| 1-0 | 41 |
1972 |
Skopje ol (Men) prelim | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |
| 9. F Silva vs R Cassidy |
| 1-0 | 42 |
1972 |
Skopje ol (Men) final-C | C09 French, Tarrasch, Open Variation, Main line |
| 10. Pribyl vs R Cassidy |
| 1-0 | 48 |
1972 |
Skopje ol (Men) prelim | A18 English, Mikenas-Carls |
| 11. R Cassidy vs Kwan Nam Seng |
| 1-0 | 24 |
1972 |
Skopje ol (Men) prelim | A16 English |
| 12. R Cassidy vs K Shahsavar |
| 1-0 | 27 |
1974 |
Nice ol final-C | B22 Sicilian, Alapin |
| 13. Nevzat Suer vs R Cassidy |
| 1-0 | 27 |
1974 |
Nice ol final-C | B00 Uncommon King's Pawn Opening |
| 14. R Cassidy vs G Tsouros |
| 1-0 | 34 |
1974 |
Nice ol final-C | C01 French, Exchange |
| 15. R Cassidy vs D B Savident |
| 1-0 | 16 |
1974 |
Nice ol prelim | C01 French, Exchange |
| 16. J Dueball vs R Cassidy |
| 1-0 | 42 |
1974 |
Nice ol prelim | B00 Uncommon King's Pawn Opening |
