Stadium: Court 11 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Doha | 2021/10/07 14:50 | Christian Sigsgaard v Boris Butulija | 6-1,6-3 |
| ITF M15 Doha | 2021/10/06 15:30 | Saketh Myneni v Christian Sigsgaard | 4-6,4-6 |
| ITF M25 Falun | 2021/09/29 14:50 | Antoine Escoffier v Christian Sigsgaard | 7-5,6-7,6-4 |
| ITF M25 Falun | 2021/09/28 12:45 | Leo Borg v Christian Sigsgaard | 3-6,4-6 |
| ITF M25 Falun | 2021/09/26 11:00 | Christian Sigsgaard v Jonathan Backman | 6-1,6-4 |
| Davis Cup | 2021/09/17 14:00 | Christian Sigsgaard v Wishaya Trongcharoenchaikul | 6-3,6-2 |
| ITF M15 Monastir | 2021/09/11 08:30 | Christian Sigsgaard v Gage Brymer | 4-6,4-6 |
| ITF M15 Monastir | 2021/09/10 09:45 | Masamichi Imamura v Christian Sigsgaard | 3-6,6-3,3-6 |
| ITF M15 Doha | 2021/10/07 12:30 | Oscar Moraing v Dev Javia | 2-6,6-2,6-2 |
| ITF M15 Doha | 2021/10/06 12:25 | Oscar Moraing v Mousa Shanan Zayed | 6-0,6-0 |
| ITF M15 Forbach | 2021/09/29 12:20 | Oscar Moraing v Luke Johnson | 3-6,2-6 |
| ITF M25 Jonkoping | 2021/09/22 07:55 | Oscar Moraing v Otto Virtanen | 6-1,4-6,2-6 |
| ITF M25 Jonkoping | 2021/09/21 08:55 | Oscar Moraing v Michal Dembek | 6-4,6-4 |
| ITF M25 Jonkoping | 2021/09/20 10:35 | Oscar Moraing v Oscar Dahlberg | 6-0,6-0 |
| ITF M25 Plaisir | 2021/09/15 13:10 | Oscar Moraing v Antoine Bellier | 6-7,6-3,6-7 |
| ITF M25 Plaisir | 2021/09/13 14:30 | Oscar Moraing v Paul Cayre | 3-6,3-6 |