| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. Yates vs J A Seitz |
| 1-0 | 48 |
1924 |
Hastings-A 2425 | B43 Sicilian, Kan, 5.Nc3 |
| 27. R P Michell vs J A Seitz |
| ½-½ | 51 |
1924 |
Hastings-A 2425 | B40 Sicilian |
| 28. P F Johner vs J A Seitz |
| 1-0 | 68 |
1925 |
Debrecen | D02 Queen's Pawn Game |
| 29. J A Seitz vs V Vukovic |
| ½-½ | 34 |
1925 |
Debrecen | C48 Four Knights |
| 30. J A Seitz vs R P Michell |
| 0-1 | 47 |
1925 |
Hastings 2526 | D31 Queen's Gambit Declined |
| 31. J A Seitz vs Kmoch |
| ½-½ | 22 |
1925 |
Debrecen | C01 French, Exchange |
| 32. K Havasi vs J A Seitz |
| ½-½ | 30 |
1925 |
Debrecen | D51 Queen's Gambit Declined |
| 33. J A Seitz vs A Vajda |
 | 1-0 | 55 |
1925 |
Debrecen | E61 King's Indian |
| 34. J A Seitz vs Yates |
| 1-0 | 42 |
1925 |
Hastings 2526 | E90 King's Indian |
| 35. J A Seitz vs Gruenfeld |
| ½-½ | 63 |
1925 |
Debrecen | B02 Alekhine's Defense |
| 36. L Asztalos vs J A Seitz |
| ½-½ | 19 |
1925 |
Debrecen | A52 Budapest Gambit |
| 37. J A Seitz vs L Steiner |
| 1-0 | 30 |
1925 |
Debrecen | D90 Grunfeld |
| 38. Prokes vs J A Seitz |
| 1-0 | 66 |
1925 |
Debrecen | C01 French, Exchange |
| 39. J A Seitz vs Przepiorka |
| 0-1 | 67 |
1925 |
Debrecen | C68 Ruy Lopez, Exchange |
| 40. H K Mattison vs J A Seitz |
| 1-0 | 56 |
1925 |
Debrecen | B41 Sicilian, Kan |
| 41. Tartakower vs J A Seitz |
 | ½-½ | 113 |
1925 |
Debrecen | B23 Sicilian, Closed |
| 42. Alekhine vs J A Seitz |
 | 1-0 | 20 |
1925 |
Hastings 2526 | A52 Budapest Gambit |
| 43. J A Seitz vs G Nagy |
| 1-0 | 48 |
1925 |
Debrecen | D43 Queen's Gambit Declined Semi-Slav |
| 44. Alekhine vs J A Seitz |
 | 1-0 | 20 |
1926 |
Hastings | A52 Budapest Gambit |
| 45. Vidmar vs J A Seitz |
| 1-0 | 38 |
1926 |
Hastings 2526 | D48 Queen's Gambit Declined Semi-Slav, Meran |
| 46. J A Seitz vs Wahltuch |
| 1-0 | 51 |
1926 |
Hastings 2526 | D31 Queen's Gambit Declined |
| 47. Samisch vs J A Seitz |
| 1-0 | 32 |
1928 |
Dortmund GER | D32 Queen's Gambit Declined, Tarrasch |
| 48. A Van Nuss vs J A Seitz |
| ½-½ | 59 |
1928 |
Dortmund GER | D32 Queen's Gambit Declined, Tarrasch |
| 49. J A Seitz vs Reti |
| 0-1 | 56 |
1928 |
Dortmund GER | C68 Ruy Lopez, Exchange |
| 50. J A Seitz vs Colle |
| 1-0 | 62 |
1928 |
Dortmund | B01 Scandinavian |