| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Marshall vs O Lowenborg |
| 0-1 | 21 | 1911 | Simul | C30 King's Gambit Declined |
| 2. J Dobias vs O Lowenborg |
| 1-0 | 58 | 1912 | DSB-18.Kongress-C | C78 Ruy Lopez |
| 3. O Lowenborg vs O Wegemund |
 | 1-0 | 42 | 1912 | DSB-18.Kongress-C | C50 Giuoco Piano |
| 4. O Lowenborg vs A Pokorny |
| ½-½ | 35 | 1912 | DSB-18.Kongress-C | C84 Ruy Lopez, Closed |
| 5. O Lowenborg vs A Kramer |
| 1-0 | 42 | 1912 | DSB-18.Kongress-C | C10 French |
| 6. O Lowenborg vs J Brach Sr |
| 1-0 | 80 | 1912 | DSB-18.Kongress-C | C14 French, Classical |
| 7. P Krueger vs O Lowenborg |
| 1-0 | 32 | 1912 | DSB-18.Kongress-C | C22 Center Game |
| 8. O Lowenborg vs K Opocensky |
 | 0-1 | 33 | 1913 | Mlada Boleslav-B | C10 French |
| 9. O Lowenborg vs R Stoklaska |
| 1-0 | 35 | 1913 | Mlada Boleslav-B | C47 Four Knights |
| 10. O Lowenborg vs M Hajn |
| 1-0 | 31 | 1913 | Mlada Boleslav-B | B18 Caro-Kann, Classical |
| 11. V Kornia vs O Lowenborg |
| 0-1 | 25 | 1913 | Mlada Boleslav-B | B01 Scandinavian |
| 12. O Lowenborg vs E Granlund |
| 1-0 | 29 | 1913 | Stockholm | C40 King's Knight Opening |
| 13. Kostic vs O Lowenborg |
| 1-0 | 19 | 1913 | Stockholm | D32 Queen's Gambit Declined, Tarrasch |
| 14. O Lowenborg vs NN |
| 1-0 | 31 | 1915 | Consultation game | C22 Center Game |
| 15. O Lowenborg vs B Rask |
| 1-0 | 20 | 1915 | Casual game | C47 Four Knights |
| 16. F Bengtsson vs O Lowenborg |
| 1-0 | 22 | 1916 | Skane-Stockholm | C25 Vienna |
| 17. J Giersing vs O Lowenborg |
| 0-1 | 33 | 1916 | Nordic Congress, Copenhagen | A46 Queen's Pawn Game |
| 18. O Lowenborg vs P Johner |
| 1-0 | 41 | 1916 | Nordic Congress, Copenhagen | C47 Four Knights |
| 19. S O Svensson vs O Lowenborg |
| 1-0 | 52 | 1916 | Nordic Congress, Copenhagen | C52 Evans Gambit |
| 20. O Krause vs O Lowenborg |
| ½-½ | 40 | 1916 | Nordic Congress, Copenhagen | B15 Caro-Kann |
| 21. O Lowenborg vs G Nyholm |
| 0-1 | 71 | 1916 | Nordic Congress, Copenhagen | A46 Queen's Pawn Game |
| 22. E Jacobson vs O Lowenborg |
| 0-1 | 64 | 1916 | Nordic Congress, Copenhagen | C54 Giuoco Piano |
| 23. O Lowenborg vs M Marchand |
| 1-0 | 24 | 1916 | Nordic Congress, Copenhagen | A84 Dutch |
| 24. B Rask vs O Lowenborg |
| 1-0 | 25 | 1916 | Stockholm t | C10 French |
| 25. O Lowenborg vs B Rask |
| 1-0 | 21 | 1917 | Stockholm | A53 Old Indian |
Kibitzing
