| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Stephenson vs R Koepcke |
| 0-1 | 35 | 1981 | 82nd US Open | C01 French, Exchange |
| 2. R Koepcke vs I Rogers |
| 0-1 | 24 | 1982 | City College Open | D85 Grunfeld |
| 3. R Koepcke vs I Rogers |
| 0-1 | 31 | 1982 | American Open | A71 Benoni, Classical, 8.Bg5 |
| 4. K Lawless vs R Koepcke |
| ½-½ | 21 | 1985 | Lera Sunnyvale | C04 French, Tarrasch, Guimard Main line |
| 5. D Alan Knowles vs R Koepcke |
| ½-½ | 27 | 1987 | 88th US Open | A45 Queen's Pawn Game |
| 6. F Lindsay vs R Koepcke |
| 1-0 | 56 | 1987 | 88th US Open | D51 Queen's Gambit Declined |
| 7. Gulko vs R Koepcke |
| 1-0 | 30 | 1987 | American op | E49 Nimzo-Indian, 4.e3, Botvinnik System |
| 8. E Tate vs R Koepcke |
| 0-1 | 39 | 1989 | 90th US Open | C00 French Defense |
| 9. G Hjorth vs R Koepcke |
| 1-0 | 61 | 1990 | California Open | E46 Nimzo-Indian |
| 10. R Koepcke vs B Chesney |
| ½-½ | 41 | 1990 | Northern California Masters | E14 Queen's Indian |
| 11. R Koepcke vs Yermolinsky |
| 0-1 | 37 | 1991 | 92nd US Open | A52 Budapest Gambit |
| 12. R Koepcke vs Petursson |
| 0-1 | 46 | 1991 | National Open | E15 Queen's Indian |
| 13. R Koepcke vs M Brooks |
| 0-1 | 30 | 1991 | 92nd US Open | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
| 14. P Dyson vs R Koepcke |
| 1-0 | 31 | 1998 | 99th US Open | A46 Queen's Pawn Game |
| 15. R Koepcke vs G Polizoti |
| 1-0 | 32 | 1998 | 99th US Open | A42 Modern Defense, Averbakh System |
| 16. J Dowling vs R Koepcke |
| 0-1 | 31 | 1998 | 99th US Open | B10 Caro-Kann |
| 17. R Koepcke vs D Hauser |
| 1-0 | 28 | 1999 | US Amateur Team East | A45 Queen's Pawn Game |
| 18. A Sharggin vs R Koepcke |
| 0-1 | 58 | 1999 | US Amateur Team East | C19 French, Winawer, Advance |
| 19. B Miller vs R Koepcke |
| 0-1 | 77 | 1999 | US Amateur Team East | C18 French, Winawer |
| 20. R Koepcke vs E Groberman |
| ½-½ | 33 | 1999 | US Amateur Team East | E99 King's Indian, Orthodox, Taimanov |
| 21. K Chieu vs R Koepcke |
| 1-0 | 58 | 1999 | US Amateur Team East | B17 Caro-Kann, Steinitz Variation |
| 22. R Koepcke vs E Frumkin |
| ½-½ | 25 | 1999 | US Amateur Team East | B06 Robatsch |
| 23. R Koepcke vs Y Lapshun |
| 0-1 | 20 | 2001 | US Amateur Team East | D07 Queen's Gambit Declined, Chigorin Defense |
| 24. K Chieu vs R Koepcke |
| 0-1 | 46 | 2001 | US Amateur Team East | E53 Nimzo-Indian, 4.e3 |
| 25. R Koepcke vs J S Burke |
| 0-1 | 44 | 2001 | US Amateur Team East | D45 Queen's Gambit Declined Semi-Slav |
Kibitzing
