Stadion: Court 8 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 - Monastir | 2021/03/14 08:00 | Guy Orly Iradukunda v Kai Lemstra | 3-6,5-7 |
| ITF - M15 - Monastir | 2021/03/11 10:40 | Kai Lemstra v Juan Bautista Torres | 4-6,1-6 |
| ITF - M15 - Monastir | 2021/03/10 12:15 | Kai Lemstra v Christoph Negritu | 6-4,2-6,6-1 |
| ITF - M15 - Monastir | 2021/03/08 18:00 | Anis Ghorbel v Kai Lemstra | 6-3,6-4 |
| ITF - M15 - Monastir | 2021/03/08 13:30 | Sabit Suntic v Kai Lemstra | 3-6,6-4,8-10 |
| ITF - M15 - Monastir | 2021/03/07 10:30 | Facundo Yunis v Kai Lemstra | 6-7,3-6 |
| ITF - M15 - Monastir | 2021/03/01 08:00 | Noah Lopez v Kai Lemstra | 3-6,7-5,10-7 |
| ITF - M15 - Monastir | 2021/02/28 08:00 | Goran Duquesne v Kai Lemstra | 0-6,2-6 |