| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. R Grau vs J Lynch |
| 1-0 | 20 | 1921 | ARG-ch1 | D37 Queen's Gambit Declined |
| 2. R Illa vs R Grau |
| ½-½ | 32 | 1921 | ARG-ch1 | C66 Ruy Lopez |
| 3. R Grau vs A Guerra Boneo |
 | 1-0 | 30 | 1921 | Argentine National Tournament | C26 Vienna |
| 4. J de Freitas vs R Grau |
| 0-1 | 41 | 1921 | 1st South American Championship 1921/22 | C01 French, Exchange |
| 5. R Grau vs J Loedel |
| 1-0 | 25 | 1921 | 1st South American Championship 1921/22 | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 6. R Werneck de Castro vs R Grau |
| 0-1 | 39 | 1921 | 1st South American Championship 1921/22 | E16 Queen's Indian |
| 7. R Grau vs R Illa |
| ½-½ | 17 | 1921 | 1st South American Championship 1921/22 | D12 Queen's Gambit Declined Slav |
| 8. J Berasain vs R Grau |
| ½-½ | 40 | 1922 | 1st South American Championship 1921/22 | C13 French |
| 9. S Rivas Costa vs R Grau |
| 0-1 | 47 | 1922 | 1st South American Championship 1921/22 | E12 Queen's Indian |
| 10. R Grau vs J Lynch |
| ½-½ | 25 | 1922 | 1st South American Championship 1921/22 | C14 French, Classical |
| 11. B H Villegas vs R Grau |
| 1-0 | 36 | 1922 | 1st South American Championship 1921/22 | D63 Queen's Gambit Declined, Orthodox Defense |
| 12. R Grau vs A Ellerman |
| 1-0 | 20 | 1922 | 1st South American Championship 1921/22 | D12 Queen's Gambit Declined Slav |
| 13. D Reca vs R Grau |
| 0-1 | 17 | 1922 | 1st South American Championship 1921/22 | C30 King's Gambit Declined |
| 14. R Grau vs J de Souza Mendes |
| 1-0 | 47 | 1922 | 1st South American Championship 1921/22 | D63 Queen's Gambit Declined, Orthodox Defense |
| 15. H A Carlos vs R Grau |
| 0-1 | 33 | 1922 | 1st South American Championship 1921/22 | C13 French |
| 16. R Grau vs H Anaya Oger |
| 1-0 | 47 | 1922 | 1st South American Championship 1921/22 | C50 Giuoco Piano |
| 17. J Montalban vs R Grau |
| 0-1 | 39 | 1922 | 1st South American Championship 1921/22 | D60 Queen's Gambit Declined, Orthodox Defense |
| 18. R Grau vs A A Barbosa de Oliveira |
| 1-0 | 18 | 1922 | 1st South American Championship 1921/22 | D32 Queen's Gambit Declined, Tarrasch |
| 19. R Grau vs L Palau |
| 1-0 | 41 | 1922 | 1st South American Championship 1921/22 | C49 Four Knights |
| 20. R Grau vs D Reca |
| ½-½ | 27 | 1923 | ARG-ch3 Mayor Buenos Aires | D63 Queen's Gambit Declined, Orthodox Defense |
| 21. L Palau vs R Grau |
| ½-½ | 22 | 1923 | ARG-ch3 Mayor Buenos Aires | D63 Queen's Gambit Declined, Orthodox Defense |
| 22. D Reca vs R Grau |
| ½-½ | 36 | 1923 | ARG-ch3 Mayor Buenos Aires | C66 Ruy Lopez |
| 23. R Grau vs L Palau |
| 1-0 | 45 | 1923 | ARG-ch3 Mayor Buenos Aires | C00 French Defense |
| 24. L Palau vs R Grau |
| 1-0 | 31 | 1923 | ARG-ch3 Mayor Buenos Aires | D51 Queen's Gambit Declined |
| 25. Max Blumenfeld vs R Grau |
| 0-1 | 37 | 1923 | Exhibition game | C01 French, Exchange |
Kibitzing
