Stadium: Court 3 Round: 62 Ground: Clay
| ITF M25 Velenje | 2021/07/04 07:30 | Constantin Bittoun Kouzmine v Francisco Vittar | 7-5,6-1 |
| ITF M25 The Hague | 2021/07/01 17:00 | Constantin Bittoun Kouzmine v Tim Van Rijthoven | 5-7,4-6 |
| ITF M25 The Hague | 2021/07/01 07:30 | Sidane Pontjodikromo v Constantin Bittoun Kouzmine | 6-7,2-6 |
| ITF M25 The Hague | 2021/06/28 07:55 | Dominik Palan v Constantin Bittoun Kouzmine | 6-2,2-6,6-10 |
| ITF M25 The Hague | 2021/06/27 08:00 | Roland Stuurman v Constantin Bittoun Kouzmine | 2-6,1-6 |
| ITF M25 Alkmaar | 2021/06/20 17:00 | Constantin Bittoun Kouzmine v Michiel de Krom | 3-6,3-6 |
| ITF M15 Monastir | 2021/05/19 13:05 | Constantin Bittoun Kouzmine v Yusuke Takahashi | 3-6,0-6 |
| ITF M15 Monastir | 2021/05/17 12:30 | Taisei Ichikawa v Constantin Bittoun Kouzmine | 7-6,3-6,9-11 |
| ITF M15 Cairo | 2021/04/18 07:00 | Edoardo Zanada v Santiago De La Fuente | 6-4,1-6,7-10 |
| ITF M15 Cairo | 2021/04/12 09:30 | Edoardo Zanada v Olexiy Kolisnyk | 2-6,1-6 |
| ITF M15 Cairo | 2021/04/11 08:00 | Edoardo Zanada v Stephanos Schinas | 6-4,6-1 |
| ITF M15 Monastir | 2021/03/22 10:30 | Edoardo Zanada v Leonardo Civita-Telles | 2-6,4-6 |
| ITF M15 Monastir | 2021/03/21 18:00 | Edoardo Zanada v Bradley Paliska | 2-6,7-6,10-8 |
| ITF M15 Monastir | 2021/03/15 13:30 | Edoardo Zanada v Savva Polukhin | 0-6,0-6 |
| ITF M15 Monastir | 2021/03/15 09:00 | Edoardo Zanada v Yannick Stephan Born | 6-1,6-3 |
| ITF M15 Monastir | 2021/03/14 10:00 | Stefano Battaglino v Edoardo Zanada | 6-1,6-7,3-10 |