Stadium: Central Court Round: 26 Ground: Hardcourt outdoor
| ITF M15 Manacor | 2022/01/04 16:25 | Christian Sigsgaard v Peter Heller | 1-6,7-5,6-2 |
| ITF M25 Manacor | 2022/01/12 10:00 | Peter Heller v Natan D'Hulst | 6-2,6-1 |
| ITF M15 Manacor | 2022/01/04 16:25 | Christian Sigsgaard v Peter Heller | 1-6,7-5,6-2 |
| Challenger Eckental | 2021/11/01 11:55 | Tobias Simon v Peter Heller | 6-2,6-4 |
| ITF M15 Antalya | 2021/10/26 08:25 | Peter Heller v Jack Pinnington Jones | 3-6,4-6 |
| Challenger Lisbon | 2021/09/27 09:00 | Santiago Rodriguez Taverna v Peter Heller | 7-6,7-5 |
| Challenger Lisbon | 2021/09/26 11:25 | Luis Faria v Peter Heller | 1-6,7-6,4-6 |
| Challenger Braga | 2021/09/21 09:00 | Thiago Monteiro v Peter Heller | 6-3,6-3 |
| Challenger Braga | 2021/09/19 09:00 | Miguel Gomes v Peter Heller | 0-6,1-6 |
| ITF M25 Manacor | 2022/01/12 13:00 | Christian Sigsgaard v Stefanos Sakellaridis | 6-3,6-1 |
| ITF M15 Manacor | 2022/01/08 11:00 | Ugo Blanchet v Christian Sigsgaard | 6-0,7-6 |
| ITF M15 Manacor | 2022/01/07 12:40 | Leopold Zima v Christian Sigsgaard | 3-6,2-6 |
| ITF M15 Manacor | 2022/01/06 11:00 | Enzo Wallart v Christian Sigsgaard | 3-6,6-3,3-6 |
| ITF M15 Manacor | 2022/01/04 16:25 | Christian Sigsgaard v Peter Heller | 1-6,7-5,6-2 |
| Davis Cup | 2021/11/27 10:10 | Elliot Benchetrit v Christian Sigsgaard | 7-6,3-6,6-2 |
| ITF M15 Doha | 2021/10/13 14:15 | Oscar Moraing v Christian Sigsgaard | 6-4,6-2 |
| ITF M15 Doha | 2021/10/08 12:30 | Christian Sigsgaard v Oscar Moraing | 6-3,1-6,2-6 |