Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. D Martinez vs Mason |
 | 1-0 | 38 | 1875 | Third Match | C42 Petrov Defense |
2. Bird vs Mason |
 | ½-½ | 71 | 1875 | Bird - Mason 1875/76 | C42 Petrov Defense |
3. W Potter vs Mason |
  | 1-0 | 28 | 1879 | Mason - Potter | C42 Petrov Defense |
4. Blackburne vs Mason |
   | 1-0 | 19 | 1886 | British CC Master tournament | C42 Petrov Defense |
5. D Martinez vs Mason |
| ½-½ | 34 | 1889 | 6th American Chess Congress, New York | C42 Petrov Defense |
6. Taubenhaus vs Mason |
| ½-½ | 27 | 1889 | 6th American Chess Congress, New York | C42 Petrov Defense |
7. D Martinez vs Mason |
| ½-½ | 24 | 1889 | 6th American Chess Congress, New York | C42 Petrov Defense |
8. M Harmonist vs Mason |
| 0-1 | 62 | 1889 | 6th DSB Congress, Breslau | C42 Petrov Defense |
9. E Schallopp vs Mason |
 | ½-½ | 64 | 1889 | 6th DSB Congress, Breslau | C42 Petrov Defense |
10. Tarrasch vs Mason |
  | 1-0 | 38 | 1890 | 6th BCA Congress, Manchester | C42 Petrov Defense |
11. Lasker vs Mason |
  | 1-0 | 51 | 1892 | 7th BCA Congress, London | C42 Petrov Defense |
12. Winawer vs Mason |
 | ½-½ | 95 | 1892 | 7th DSB Congress, Dresden | C42 Petrov Defense |
13. Alapin vs Mason |
| | 44 | 1892 | 7th DSB Congress, Dresden | C42 Petrov Defense |
14. G Marco vs Mason |
| 0-1 | 35 | 1892 | 7th DSB Congress, Dresden | C42 Petrov Defense |
15. von Bardeleben vs Mason |
| 1-0 | 73 | 1892 | 7th DSB Congress, Dresden | C42 Petrov Defense |
16. F Lee vs Mason |
 | 0-1 | 74 | 1892 | North of Ireland Masters | C42 Petrov Defense |
17. Janowski vs Mason |
  | ½-½ | 54 | 1895 | Hastings | C42 Petrov Defense |
18. Schlechter vs Mason |
 | 1-0 | 38 | 1899 | London | C42 Petrov Defense |
19. Bird vs Mason |
 | 0-1 | 40 | 1899 | London | C42 Petrov Defense |
20. L van Vliet vs Mason |
 | 1-0 | 66 | 1900 | London | C42 Petrov Defense |
21. Maroczy vs Mason |
 | ½-½ | 60 | 1902 | Monte Carlo | C42 Petrov Defense |
22. Schlechter vs Mason |
 | ½-½ | 33 | 1902 | Monte Carlo | C42 Petrov Defense |
23. W Napier vs Mason |
 | ½-½ | 28 | 1902 | 13th DSB Congress, Hanover | C42 Petrov Defense |
24. A Reggio vs Mason |
 | ½-½ | 32 | 1903 | Monte Carlo | C42 Petrov Defense |