Stadium: Court 4 Round: 25 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/04/06 13:10 | Evgeny Tyurnev v Vladimir Ivanov | 6-1,6-4 |
| ITF M15 Kazan | 2021/03/10 12:50 | Shalva Dzhanashia v Vladimir Ivanov | 6-0,2-6,6-3 |
| ITF M15 St Petersburg | 2021/02/11 09:50 | Alexander Vasilenko v Vladimir Ivanov | 6-2,6-0 |
| ITF M15 St Petersburg | 2021/02/10 08:35 | Vladimir Ivanov v Andrea Guerrieri | 6-4,6-2 |
| ITF M15 St Petersburg | 2021/02/04 09:00 | Alibek Kachmazov v Vladimir Ivanov | 6-1,6-0 |
| ITF M15 St Petersburg | 2021/02/03 07:00 | Vladimir Ivanov v Andrea Guerrieri | 6-4,7-5 |
| ITF M15 Parnu | 2020/11/05 08:00 | Vladimir Ivanov v Eric Vanshelboim | 7-5,4-6,4-6 |
| ITF M15 Parnu | 2020/11/04 09:40 | Vladimir Ivanov v Eero Vasa | 1-6,7-5,6-0 |
| 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 St Petersburg | 2021/04/04 11:55 | Jaimee Floyd Angele v Constantin Bittoun Kouzmine | 6-1,1-6,7-10 |
| ITF M15 Poitiers | 2021/03/14 11:45 | Constantin Bittoun Kouzmine v Vincent Stouff | 6-3,6-7,7-10 |
| ITF M15 Bratislava | 2021/03/10 10:30 | Constantin Bittoun Kouzmine v Vitaliy Sachko | 6-3,2-6,3-6 |
| ITF M15 Bratislava | 2021/03/09 09:00 | Martin Dobry v Constantin Bittoun Kouzmine | 3-6,0-6 |
| ITF M15 Bratislava | 2021/03/08 15:00 | Jan Jermar v Constantin Bittoun Kouzmine | 6-7,2-6 |