| ITF - Loughborough M25 | 01/26 16:50 | 25 | Aidan Mchugh v Christian Sigsgaard | 6-3,6-4 | |
| ITF - Loughborough M25 | 01/24 14:55 | 54 | Christian Sigsgaard v Alec Beckley | 6-3,6-4 | |
| ITF - Loughborough M25 | 01/23 12:45 | 54 | Christian Sigsgaard v Ying Hou | 6-2,6-2 | |
| ITF - Manacor M25 | 01/13 11:45 | 26 | Peter Heller v Christian Sigsgaard | 6-2,6-4 | |
| ITF - Manacor M25 | 01/12 13:00 | 25 | Christian Sigsgaard v Stefanos Sakellaridis | 6-3,6-1 | |
| ITF - Manacor M15 | 01/08 11:00 | 28 | Ugo Blanchet v Christian Sigsgaard | 6-0,7-6 | |
| ITF - Manacor M15 | 01/07 12:40 | 27 | Leopold Zima v Christian Sigsgaard | 3-6,2-6 | |
| ITF - Manacor M15 | 01/06 11:00 | 26 | Enzo Wallart v Christian Sigsgaard | 3-6,6-3,3-6 | |
| ITF - Manacor M15 | 01/04 16:25 | 25 | Christian Sigsgaard v Peter Heller | 1-6,7-5,6-2 | |
| Puchar Davisa | 11/28 13:25 | 5 | Lamine Ouahab v Christian Sigsgaard | Cancelled | |
| Puchar Davisa | 11/27 10:10 | 1 | Elliot Benchetrit v Christian Sigsgaard | 7-6,3-6,6-2 | |
| ITF - Doha M15 | 10/13 14:15 | 25 | Oscar Moraing v Christian Sigsgaard | 6-4,6-2 | |
| ITF - Doha M15 | 10/08 12:30 | 27 | Christian Sigsgaard v Oscar Moraing | 6-3,1-6,2-6 | |
| ITF - Doha M15 | 10/07 14:50 | 26 | Christian Sigsgaard v Boris Butulija | 6-1,6-3 | |
| ITF - Doha M15 | 10/06 15:30 | 25 | Saketh Myneni v Christian Sigsgaard | 4-6,4-6 | |
| ITF - Falun M25 | 09/29 14:50 | 26 | Antoine Escoffier v Christian Sigsgaard | 7-5,6-7,6-4 | |
| ITF - Falun M25 | 09/28 12:45 | 25 | Leo Borg v Christian Sigsgaard | 3-6,4-6 | |
| ITF - Falun M25 | 09/27 07:55 | 54 | Christian Sigsgaard v Tibo Colson | Retired | |
| ITF - Falun M25 | 09/26 11:00 | 54 | Christian Sigsgaard v Jonathan Backman | 6-1,6-4 | |
| Puchar Davisa | 09/17 14:00 | 1 | Christian Sigsgaard v Wishaya Trongcharoenchaikul | 6-3,6-2 | |
| ITF - Monastir M15 | 09/11 08:30 | 28 | Christian Sigsgaard v Gage Brymer | 4-6,4-6 | |
| ITF - Monastir M15 | 09/10 09:45 | 27 | Masamichi Imamura v Christian Sigsgaard | 3-6,6-3,3-6 | |
| ITF - Monastir M15 | 09/09 09:40 | 26 | Christian Sigsgaard v Stuart Parker | 1-6,6-2,6-1 | |
| ITF - Monastir M15 | 09/08 14:00 | 25 | Peter Bertran v Christian Sigsgaard | 3-6,3-6 | |
| ITF - Monastir M15 | 09/07 08:00 | 62 | Christian Sigsgaard v James Ibrahim | 6-2,6-1 | |
| ITF - Monastir M15 | 09/05 11:00 | 62 | Christian Sigsgaard v Amaury Raynel | 6-1,6-2 | |
| ITF - Frankfurt am Main M25 | 08/12 10:50 | 26 | Christian Sigsgaard v Daniel Dutra Da Silva | 6-7,3-6 | |
| ITF - Frankfurt am Main M25 | 08/10 13:55 | 25 | Tobias Simon v Christian Sigsgaard | 3-6,3-6 | |
| ITF - Frederiksberg M15 | 08/06 09:00 | 27 | Jonathan Mridha v Christian Sigsgaard | 6-4,6-4 | |
| ITF - Frederiksberg M15 | 08/05 10:25 | 26 | Christian Sigsgaard v Daniel De Jonge | 6-4,7-6 |