Stadium: Court 6 Round: 62 Ground: Clay
| ITF M15 Sibenik | 2021/04/18 08:00 | Aleksandar Tomas v Christian Sigsgaard | 2-6,7-6,2-10 |
| ITF M15 Sharm El Sheikh | 2021/03/28 14:30 | Ivan Mikhaylyuk v Christian Sigsgaard | 4-6,6-4,10-2 |
| ITF M15 Sharm El Sheikh | 2021/03/22 07:30 | Marco Miceli v Christian Sigsgaard | 7-6,3-6,10-5 |
| ITF M15 Sharm El Sheikh | 2021/03/21 09:30 | Tomas Papik v Christian Sigsgaard | 4-6,2-6 |
| ITF M15 Manacor | 2021/01/12 11:00 | Peter Benjamin Privara v Christian Sigsgaard | 3-6,6-1,10-8 |
| ITF M15 Manacor | 2021/01/11 13:30 | Christian Sigsgaard v Hugo Pontico | 6-2,3-6,10-0 |
| Davis Cup | 2019/09/14 14:30 | Christian Sigsgaard v Altug Celikbilek | 1-6,6-7 |
| Davis Cup | 2019/09/13 14:00 | Christian Sigsgaard v Cem Ilkel | 6-7,7-6,2-6 |
| ITF M15 Sibenik | 2021/04/18 08:00 | Matic Dimic v Neil Oberleitner | 7-6,4-6,6-10 |
| ITF M15 Sharm El Sheikh | 2021/04/06 08:55 | Neil Oberleitner v Adam Jones | 2-6,6-1,8-10 |
| ITF M15 Sharm El Sheikh | 2021/04/05 11:30 | Neil Oberleitner v Emiliano Troche | 6-0,6-1 |
| ITF M15 Sharm El Sheikh | 2021/03/28 14:30 | Lorenzo Rottoli v Neil Oberleitner | 6-1,3-6,10-8 |
| ITF M15 Sharm El Sheikh | 2021/03/23 07:30 | Francesco Vilardo v Neil Oberleitner | 6-2,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/22 07:30 | Zura Tkemaladze v Neil Oberleitner | 4-6,6-2,5-10 |
| ITF M15 Sharm El Sheikh | 2021/03/21 07:00 | Yacoub Makzoume v Neil Oberleitner | 1-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/17 10:20 | Neil Oberleitner v Hanwen Li | 3-6,7-5,6-7 |