| UTR Pro Tennis Series Zadar | 2021/09/28 11:00 | Ivan Liutarevich v Ivan Denisov | 3-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/09/27 11:00 | Ivan Liutarevich v Maxim Krapivin | 6-4,5-1 |
| ITF M15 Ulcinj | 2021/09/22 12:00 | Ivan Liutarevich v Juan Pablo Paz | 3-6,0-6 |
| ITF M15 Ulcinj | 2021/09/15 09:30 | Ivan Liutarevich v Alexis Musialek | 1-6,2-6 |
| ITF M15 Ulcinj | 2021/09/09 09:55 | Juan Pablo Paz v Ivan Liutarevich | 6-2,6-7,6-1 |
| ITF M15 Ulcinj | 2021/09/08 10:00 | Ivan Liutarevich v Daniel Ibragimov | 4-6,6-4,6-2 |
| ITF M15 Ulcinj | 2021/08/31 11:10 | Ivan Liutarevich v Jean Thirouin | 2-6,2-6 |
| ITF M25 Poznań | 2021/08/25 11:00 | Ivan Liutarevich v Aleksander Orlikowski | 6-2,5-7,3-6 |
| UTR Pro Tennis Series Zadar | 2021/09/28 11:00 | Maxim Krapivin v Deni Zmak | 2-6,2-5 |
| UTR Pro Tennis Series Portorož | 2021/08/29 08:00 | Olexiy Kolisnyk v Deni Zmak | 4-6,6-2,6-3 |
| UTR Pro Tennis Series Portorož | 2021/08/28 07:00 | Egor Novikov v Deni Zmak | 2-6,7-6,1-5 |
| UTR Pro Tennis Series Portorož | 2021/08/26 08:30 | Denis Parshutin v Deni Zmak | 3-6,0-6 |
| UTR Pro Tennis Series Portorož | 2021/08/25 13:00 | Tilen Zitnik v Deni Zmak | 3-6,1-6 |
| UTR Pro Tennis Series Portorož | 2021/08/24 07:00 | Deni Zmak v Timur Maulenov | 7-6,5-1 |
| UTR Pro Tennis Series Portorož | 2021/08/22 10:00 | Deni Zmak v Oleksandr Bielinskyi | 6-2,7-6 |
| UTR Pro Tennis Series Portorož | 2021/08/21 09:30 | Olexiy Kolisnyk v Deni Zmak | 4-6,6-7 |