Stadium: Court 8 Round: 44 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 Antalya | 2020/03/12 09:15 | Mircea-Alexandru Jecan v Gustaf Strom | 6-4,6-1 |
| ITF M15 Antalya | 2020/03/11 09:30 | Marvin Netuschil v Gustaf Strom | 4-6,3-6 |
| ITF M15 Antalya | 2020/03/10 07:30 | Gustaf Strom v Tristan Boyer | 6-4,6-4 |
| ITF M15 Antalya | 2020/03/09 08:00 | Zachary Eisinga v Gustaf Strom | 2-6,0-6 |
| ITF M15 Antalya | 2020/03/08 08:00 | Gustaf Strom v Michalis Sakellaridis | 2-0 |
| ITF M15 Antalya | 2020/03/04 06:50 | Michael Vrbensky v Gustaf Strom | 6-2,6-4 |
| ITF M15 Antalya | 2020/03/03 09:35 | Gustaf Strom v Christopher Patzanovsky | 6-2,4-6,10-6 |
| ITF M15 Antalya | 2020/03/02 07:00 | Xavier Gabarro v Gustaf Strom | 3-6,1-6 |