Estadio: 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 M25 Velenje | 2021/07/05 12:15 | Stefan Cizelj-Zivkovic v Lukas Palovic | 3-6,1-6 |
| ITF M25 Velenje | 2021/07/04 07:30 | Elijah Poritzky v Lukas Palovic | 3-6,2-6 |
| ITF M25 Wroclaw | 2021/06/28 11:00 | Mateusz Terczynski v Lukas Palovic | 6-3,6-1 |
| ITF M25 Wroclaw | 2021/06/27 14:00 | Lukas Palovic v Matias Soto | 7-5,7-6 |
| ITF M25 Klosters | 2021/06/21 07:00 | Henry V-D Schulenburg v Lukas Palovic | 6-1,6-3 |
| ITF M25 Klosters | 2021/06/20 07:00 | Jan Sebesta v Lukas Palovic | 2-6,1-6 |
| Challenger de Bratislava | 2021/06/06 08:00 | Vit Kopriva v Lukas Palovic | 3-6,6-4,6-1 |
| ITF M15 Sarajevo | 2021/05/30 07:30 | Michele Vianello v Lukas Palovic | 7-5,6-4 |