| UTR Pro Tennis Series Zadar | 2021/09/27 11:00 | Ivan Liutarevich v Maxim Krapivin | 6-4,5-1 |
| ITF M15 Ulcinj | 2021/09/20 08:00 | Joris Moret v Maxim Krapivin | 6-3,6-2 |
| ITF M15 Ulcinj | 2021/09/12 08:00 | Maxim Krapivin v Eric Morris | 4-6,2-6 |
| ITF M15 Ulcinj | 2021/09/05 07:30 | Daniel Ibragimov v Maxim Krapivin | 7-5,7-6 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Maxim Krapivin v Valerio Aboian | 2-6,0-6 |
| ITF M15 Sofia | 2021/07/05 08:00 | Aleksandr Braynin v Maxim Krapivin | 6-4,6-3 |
| ITF M25 Belgrade | 2021/06/27 07:00 | Maxim Krapivin v Mirko Martinez | 0-6,5-7 |
| ITF M15 Sarajevo | 2021/05/31 09:00 | Maxim Krapivin v Ali Habib | 2-6,0-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/29 08:00 | Olexiy Kolisnyk v Deni Zmak | 4-6,6-2,6-3 |
| UTR Pro Tennis Series Portoroz | 2021/08/28 07:00 | Egor Novikov v Deni Zmak | 2-6,7-6,1-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/26 08:30 | Denis Parshutin v Deni Zmak | 3-6,0-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/25 13:00 | Tilen Zitnik v Deni Zmak | 3-6,1-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/24 07:00 | Deni Zmak v Timur Maulenov | 7-6,5-1 |
| UTR Pro Tennis Series Portoroz | 2021/08/22 10:00 | Deni Zmak v Oleksandr Bielinskyi | 6-2,7-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/21 09:30 | Olexiy Kolisnyk v Deni Zmak | 4-6,6-7 |
| UTR Pro Tennis Series Portoroz | 2021/08/20 08:00 | Denis Parshutin v Deni Zmak | 3-6,1-5 |