Stadium: Court 7 Round: 26 Ground: Clay
| ITF M15 Sibenik | 2021/04/21 10:30 | Ugo Blanchet v Christian Sigsgaard | 2-6,0-6 |
| ITF M15 Sibenik | 2021/04/20 08:00 | Domagoj Biljesko v Christian Sigsgaard | 6-1,6-7,4-10 |
| ITF M15 Sibenik | 2021/04/19 08:00 | Christian Sigsgaard v Neil Oberleitner | 7-6,6-4 |
| 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 Sibenik | 2021/04/20 12:15 | Martin Breysach v David Pichler | 2-6,1-6 |
| ITF M25 Meerbusch | 2021/04/17 11:00 | Arthur Cazaux v David Pichler | 6-4,6-4 |
| ITF M25 Meerbusch | 2021/04/16 13:00 | David Pichler v Tim Handel | 6-4,6-4 |
| ITF M25 Meerbusch | 2021/04/13 09:30 | David Pichler v John Sperle | 6-0,6-2 |
| ITF M25 Meerbusch | 2021/04/12 09:30 | David Pichler v Jing L Weng | 6-2,6-1 |
| ITF M25 Meerbusch | 2021/04/11 14:30 | David Pichler v Nikolas Walterscheid-Tukic | 6-1,6-1 |
| Challenger Marbella | 2021/03/28 13:40 | Holger Rune v David Pichler | 6-1,6-3 |
| ITF M15 Opatija | 2021/03/24 10:45 | Giacomo Dambrosi v David Pichler | 3-6,6-1,6-2 |