Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/04/26 12:30 | Lorenzo Bresciani v Constantin Bittoun Kouzmine | 5-7,3-6 |
| ITF M15 Monastir | 2021/04/26 08:00 | Daiki Yoshimura v Constantin Bittoun Kouzmine | 3-6,3-6 |
| ITF M15 Monastir | 2021/04/25 10:30 | Miguel Fernando Pereira v Constantin Bittoun Kouzmine | 2-6,3-6 |
| ITF M15 St Petersburg | 2021/04/15 09:45 | Constantin Bittoun Kouzmine v Alexey Zakharov | 4-6,4-6 |
| ITF M15 St Petersburg | 2021/04/14 10:40 | Vladimir Ivanov v Constantin Bittoun Kouzmine | 1-6,7-6,2-6 |
| ITF M15 St Petersburg | 2021/04/12 10:25 | Pavel Shchaya-Zubrov v Constantin Bittoun Kouzmine | 0-6,3-6 |
| ITF M15 St Petersburg | 2021/04/07 09:55 | Illya Beloborodko v Constantin Bittoun Kouzmine | 6-3,6-1 |
| ITF M15 St Petersburg | 2021/04/05 08:40 | Constantin Bittoun Kouzmine v Matic Spec | 6-7,6-7 |
| ITF M15 Monastir | 2021/04/26 12:30 | Clement Deleersnyder v Arthur Bouquier | 1-6,3-6 |
| ITF M15 Monastir | 2021/04/26 08:00 | Julien Penzlin v Arthur Bouquier | 5-7,6-2,7-10 |
| ITF M15 Monastir | 2021/04/25 08:00 | Dorian Kos v Arthur Bouquier | 1-6,1-6 |
| ITF M15 Monastir | 2021/04/22 11:50 | Arthur Bouquier v Laurynas Grigelis | 1-6,6-7 |
| ITF M15 Monastir | 2021/04/21 11:40 | Maximilian Neuchrist v Arthur Bouquier | 7-6,3-6,3-6 |
| ITF M15 Monastir | 2021/04/20 08:00 | Filip Bergevi v Arthur Bouquier | 4-6,3-6 |
| ITF M15 Monastir | 2021/04/19 11:00 | Gabriele Datei v Arthur Bouquier | 4-6,1-6 |
| ITF M15 Monastir | 2021/04/18 08:00 | Julien De Cuyper v Arthur Bouquier | 2-6,3-6 |