Stadium: TK BANJA C1 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/04/28 11:40 | Francesco Maestrelli v Denis Klok | 1-6,6-2,6-1 |
| ITF M15 Antalya | 2021/04/27 07:00 | Denis Klok v Vladimir Korolev | 6-1,4-6,10-3 |
| ITF M15 Antalya | 2021/04/26 07:00 | Denis Klok v Vojtech Mares | 6-3,6-2 |
| ITF M15 Antalya | 2021/04/25 07:00 | Denis Klok v Vladislav Ivanov | 6-1,7-6 |
| ITF M15 Antalya | 2021/04/18 07:00 | Denis Klok v Noel Larwig | 5-7,0-6 |
| ITF M15 Shymkent | 2021/04/15 04:00 | Denis Klok v Ivan Gakhov | 5-7,6-7 |
| ITF M15 Shymkent | 2021/04/14 08:45 | Kirill Kolganov v Denis Klok | 4-6,1-6 |
| ITF M15 Shymkent | 2021/04/08 05:30 | Denis Klok v Dostanbek Tashbulatov | 2-6,4-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 07:30 | George Botezan v Oscar Jose Gutierrez | 0-6,3-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 14:30 | George Botezan v Ioan Alexandru Chirita | 1-6,2-6 |
| ITF M15 Bucharest | 2021/05/25 07:00 | George Botezan v Vlad Andrei Dancu | 7-6,0-6,4-10 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 09:42 | Bogdan Ionut Apostol v George Botezan | 3-6,6-2,6-3 |
| UTR Pro Tennis Series Bucharest | 2021/05/21 17:00 | George Botezan v Dan Alexandru Tomescu | 6-4,6-2 |
| ITF M15 Sibenik | 2021/04/20 10:05 | George Botezan v Tim Heger | 6-3,4-6,9-11 |
| ITF M15 Sibenik | 2021/04/19 12:50 | George Botezan v Pietro Schiavetti | 6-4,6-1 |
| ITF M15 Sibenik | 2021/04/18 10:00 | George Botezan v Andrija Jevtic | 6-0,6-2 |