Stadium: Court 11 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/07/18 13:00 | Sergo Sikharulidze v Egill Sigurdsson | 4-6,6-3,8-10 |
| ITF M15 Antalya | 2021/06/27 06:30 | Cheng-Yu Yu v Sergo Sikharulidze | 3-6,7-5,14-12 |
| ITF M15 Antalya | 2021/06/21 08:25 | Sergo Sikharulidze v Vladislav Melnic | 7-6,4-6,2-10 |
| ITF M15 Antalya | 2021/06/20 07:00 | Sergo Sikharulidze v Andrej Krajcik | 4-6,6-3,10-6 |
| ITF M15 Antalya | 2021/06/13 07:30 | Marsel Ilhan v Sergo Sikharulidze | 6-1,6-4 |
| ITF M15 Antalya | 2021/06/06 07:30 | Sergo Sikharulidze v Fausto Tabacco | 1-6,1-6 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Sergo Sikharulidze v Denis Parshutin | 3-6,3-6 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Sergo Sikharulidze v Aleksandr Braynin | 2-6,0-6 |
| ITF M15 Gdynia | 2021/08/08 08:00 | Valerio Aboian v Daniel De Jonge | 5-7,6-7 |
| ITF M15 Frederiksberg | 2021/08/05 10:25 | Christian Sigsgaard v Daniel De Jonge | 6-4,7-6 |
| ITF M15 Frederiksberg | 2021/08/03 09:20 | Daniel De Jonge v Patrick Kypson | 6-3,7-6 |
| ITF M25 Marburg | 2021/07/05 12:05 | Patrick Zahraj v Daniel De Jonge | 6-3,6-2 |
| ITF M25 The Hague | 2021/07/01 07:30 | Marko Tepavac v Daniel De Jonge | 7-5,6-1 |
| ITF M25 The Hague | 2021/06/27 08:00 | Max Van Wijk v Daniel De Jonge | 2-6,0-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/20 09:30 | Daniel De Jonge v Sebastian Grundtvig Jorgensen | 6-4,4-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 10:00 | Daniel De Jonge v Marius Ruzgas | 3-6,7-6,6-1 |