Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF - Monastir M15 | 2021/04/19 12:00 | Guy Orly Iradukunda v Miguel Fernando Pereira | 7-6,7-5 |
| ITF - Monastir M15 | 2021/04/18 11:00 | Miguel Fernando Pereira v Jabari Stafford | 6-1,6-0 |
| ITF - Monastir M15 | 2021/04/12 09:00 | Miguel Fernando Pereira v Savva Polukhin | 4-6,1-6 |
| ITF - Monastir M15 | 2021/04/11 10:00 | Goran Duquesne v Miguel Fernando Pereira | 2-6,3-6 |
| ITF - Monastir M15 | 2021/04/04 10:30 | Miguel Fernando Pereira v Piotr Matuszewski | 3-6,3-6 |
| ITF - Monastir M15 | 2021/03/29 10:30 | Julien De Cuyper v Miguel Fernando Pereira | 4-6,6-4,10-8 |
| ITF - Monastir M15 | 2021/03/28 08:00 | Miguel Fernando Pereira v Rishab Agarwal | 7-6,6-3 |
| Challenger Concepcion | 2021/02/14 14:00 | Miguel Fernando Pereira v Vitaliy Sachko | 2-6,2-6 |
| ITF - St Petersburg M15 | 2021/04/15 09:45 | Constantin Bittoun Kouzmine v Alexey Zakharov | 4-6,4-6 |
| ITF - St Petersburg M15 | 2021/04/14 10:40 | Vladimir Ivanov v Constantin Bittoun Kouzmine | 1-6,7-6,2-6 |
| ITF - St Petersburg M15 | 2021/04/12 10:25 | Pavel Shchaya-Zubrov v Constantin Bittoun Kouzmine | 0-6,3-6 |
| ITF - St Petersburg M15 | 2021/04/07 09:55 | Illya Beloborodko v Constantin Bittoun Kouzmine | 6-3,6-1 |
| ITF - St Petersburg M15 | 2021/04/05 08:40 | Constantin Bittoun Kouzmine v Matic Spec | 6-7,6-7 |
| ITF - St Petersburg M15 | 2021/04/04 11:55 | Jaimee Floyd Angele v Constantin Bittoun Kouzmine | 6-1,1-6,7-10 |
| ITF - Poitiers M15 | 2021/03/14 11:45 | Constantin Bittoun Kouzmine v Vincent Stouff | 6-3,6-7,7-10 |
| ITF - Bratysława M15 | 2021/03/10 10:30 | Constantin Bittoun Kouzmine v Vitaliy Sachko | 6-3,2-6,3-6 |