| UTR Pro Beograd | 2024/04/12 10:00 | Vuk Radjenovic v Christian Sigsgaard | 6-4,5-3 |
| UTR Pro Beograd | 2024/04/11 08:30 | Marko Maksimovic v Christian Sigsgaard | 7-6,6-3 |
| UTR Pro Beograd | 2024/04/10 10:43 | Lazar Vojinovic v Christian Sigsgaard | 7-6,3-6,7-5 |
| UTR Pro Beograd | 2024/04/08 09:42 | Ilya Snitari v Christian Sigsgaard | 1-2 |
| ITF M25 Austin | 2023/11/08 16:00 | Siem Woldeab v Christian Sigsgaard | 7-6,4-6,6-3 |
| ITF M15 Fayetteville | 2023/11/01 14:55 | Christian Sigsgaard v Derek Pham | 6-4,4-6,2-6 |
| ITF M15 Doha | 2023/10/09 16:45 | Alexey Zakharov v Christian Sigsgaard | 6-3,3-6,6-3 |
| ITF M15 Doha | 2023/10/07 13:00 | Marat Sharipov v Christian Sigsgaard | 6-3,6-4 |
| UTR Pro Beograd | 2024/04/12 12:22 | Alexandar Balj v Stefan Popovic | 1-6,4-6 |
| ITF M25 Monastir | 2023/11/27 08:00 | Adit Sinha v Alexandar Balj | 6-1,6-0 |
| ITF M25 Monastir | 2023/11/19 08:30 | Niklas Waldner v Alexandar Balj | 6-1,6-2 |
| ITF M25 Monastir | 2023/11/12 08:00 | Alexandar Balj v Luca Matteo Sobbe | 1-6,2-6 |
| ITF M25 Monastir | 2023/11/05 09:00 | Ahmed Mouhan v Alexandar Balj | 5-7,7-5,10-3 |
| ITF M25 Zlatibor | 2023/09/27 07:00 | Jaka Protic Zakelj v Alexandar Balj | 6-4,4-6,10-7 |
| ITF M15 Kursumlijska Banja | 2023/09/18 09:30 | Alexandar Balj v Andrea Fiorentini | 2-6,5-7 |
| ITF M15 Kursumlijska Banja | 2023/09/11 07:00 | Romeo Hadzimehmedovic v Alexandar Balj | 6-2,6-4 |