| UTR Pro Tennis Series Zadar | 2021/09/28 11:00 | Maxim Krapivin v Deni Zmak | 2-6,2-5 |
| 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 |
| UTR Pro Tennis Series Zadar | 2021/09/27 11:00 | Ivan Denisov v Michalis Sakellaridis | 6-2,5-1 |
| ITF M25 Pardubice | 2021/09/19 11:00 | Michalis Sakellaridis v Alan F R Fierros | 6-7,6-4,3-10 |
| UTR Pro Tennis Series Ricany | 2021/09/18 10:30 | Stefanos Sakellaridis v Michalis Sakellaridis | 6-2,7-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 07:30 | Dominik Kellovsky v Michalis Sakellaridis | 6-2,6-3 |
| UTR Pro Tennis Series Ricany | 2021/09/12 10:30 | Michalis Sakellaridis v Dominik Langmajer | 6-2,5-2 |
| UTR Pro Tennis Series Ricany | 2021/09/10 07:30 | Michalis Sakellaridis v Andrey Chepelev | 0-6,2-6 |
| UTR Pro Tennis Series Ricany | 2021/09/08 12:00 | Michalis Sakellaridis v Lawrence Bataljin | 2-6,3-5 |
| UTR Pro Tennis Series Ricany | 2021/09/07 07:30 | Michalis Sakellaridis v Yanais Laurent | 2-6,3-5 |