Estadio: Hard Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/08 09:00 | Dax Donders v Mike Loccisano | 6-2,6-1 |
| ITF M15 Heraklion | 2021/11/07 11:00 | Dax Donders v Axel Bergdahl | 6-0,6-2 |
| ITF M25 Eupen | 2021/09/07 07:30 | Dax Donders v Rayane Oumaouche | 4-6,3-6 |
| ITF M25 Eupen | 2021/09/06 13:05 | Dax Donders v Andre Megrabian | 6-4,6-3 |
| ITF M25 Eupen | 2021/09/05 10:30 | Dax Donders v Stephan Iserath | 6-2,6-2 |
| ITF M15 Oldenzaal | 2021/08/15 14:00 | Dax Donders v Arthur Van Der Kooij | 6-1,6-4 |
| ITF M25 Marburgo | 2021/07/05 10:35 | Christoph Negritu v Dax Donders | 7-6,7-6 |
| ITF M25 The Hague | 2021/06/28 07:50 | Lodewijk Weststrate v Dax Donders | 6-7,6-1,10-5 |
| ITF M15 Heraklion | 2021/11/08 09:00 | Ioannis Stamoulos v Charles Tzicas | 0-6,3-6 |
| ITF M15 Heraklion | 2021/11/07 11:00 | Andrei Cuceu v Charles Tzicas | 4-6,2-6 |
| ITF M15 Heraklion | 2021/11/01 08:00 | Charles Tzicas v Pietro Pirolt | 3-6,6-2,6-10 |
| ITF M25 Eupen | 2021/09/06 07:30 | Francesco Ferrari v Charles Tzicas | 3-6,6-4,16-14 |
| ITF M25 Eupen | 2021/09/05 07:30 | Kamran Hanif v Charles Tzicas | 5-7,4-6 |
| ITF M15 Huy | 2021/08/23 11:35 | Guillaume Dermiens v Charles Tzicas | 6-3,6-0 |
| ITF M15 Skopje | 2021/06/07 08:00 | Charles Tzicas v Sidane Pontjodikromo | 2-6,5-7 |
| ITF M15 Skopje | 2021/06/06 07:30 | Charles Tzicas v Matija Zugic | 6-1,6-3 |