Stadium: Court 6 Round: 54 Ground: Hardcourt indoor
| ITF M15 - Sint-Petersburg | 2021/04/05 06:55 | Sarp Agabigun v Igor Trunov | 6-0,6-2 |
| ITF M15 - Sint-Petersburg | 2021/04/04 13:40 | Igor Trunov v Alexander Zgirovsky | 1-6,6-3,10-7 |
| ITF M15 - Kazan | 2021/03/08 11:25 | Aleksei Khomich v Igor Trunov | 6-3,6-7,10-6 |
| ITF - M15 Sharm-el-Sheikh | 2021/02/28 09:30 | Aleksandr Lobanov v Igor Trunov | 7-6,6-7,10-4 |
| ITF - M15 Sharm-el-Sheikh | 2021/02/21 17:00 | Igor Trunov v Bastien Presuhn | 4-6,5-7 |
| ITF - M15 Sharm-el-Sheikh | 2021/02/14 13:00 | Igor Trunov v Erdem Isitan | 2-6,6-4,6-10 |
| ITF - M15 Sharm-el-Sheikh | 2021/02/08 13:30 | Paul Jubb v Igor Trunov | 6-2,6-2 |
| ITF - M15 Sharm-el-Sheikh | 2021/02/07 16:30 | Dennis Dragomirov v Igor Trunov | 6-2,5-7,3-10 |
| ITF M15 - Sint-Petersburg | 2021/04/07 09:55 | Illya Beloborodko v Constantin Bittoun Kouzmine | 6-3,6-1 |
| ITF M15 - Sint-Petersburg | 2021/04/05 08:40 | Constantin Bittoun Kouzmine v Matic Spec | 6-7,6-7 |
| ITF M15 - Sint-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 |
| ITF M15 - Bratislava | 2021/03/04 09:00 | Baptiste Crepatte v Constantin Bittoun Kouzmine | 5-7,6-4,6-3 |