| UTR Pro Tennis Series Barcelona | 2021/12/10 09:30 | Carlos Gimenez Perez v Olexiy Kolisnyk | 6-2,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/12/09 11:00 | Tomas Curras v Olexiy Kolisnyk | 5-7,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/12/08 16:32 | Vladimir Popov v Olexiy Kolisnyk | 4-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/12/06 16:47 | Alen Rogic-Hadzalic v Olexiy Kolisnyk | 2-6,7-6,5-2 |
| UTR Pro Tennis Series Bucharest | 2021/12/05 11:00 | Olexiy Kolisnyk v Dragos Constantin Ignat | 6-7,6-3,4-1 |
| UTR Pro Tennis Series Bucharest | 2021/12/04 09:30 | Olexiy Kolisnyk v Volodymyr Uzhylovskyi | 6-4,3-6,5-3 |
| UTR Pro Tennis Series Bucharest | 2021/12/03 09:30 | Olexiy Kolisnyk v Nicolae Frunza | 7-5,3-6,4-5 |
| UTR Pro Tennis Series Bucharest | 2021/12/02 09:30 | Olexiy Kolisnyk v Ioan Alexandru Chirita | 4-6,5-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/11 08:30 | Jip Van Assendelft v Miko Wassermann | 4-6,7-5,3-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/09 11:50 | Jip Van Assendelft v Guy Den Heijer | 2-6,2-6 |
| UTR Pro Tennis Series Amsterdam | 2021/12/08 07:00 | Jip Van Assendelft v Rob Van Den Berg | 4-6,6-4,6-1 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 10:00 | Jip Van Assendelft v Jannis Kahlke | 2-6,7-5,6-2 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Jip Van Assendelft v Michiel de Krom | 2-6,6-2,1-6 |
| UTR Pro Tennis Series Amsterdam | 2021/11/07 09:00 | Benjamin Dhoe v Jip Van Assendelft | 3-6,4-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/06 16:00 | Nathan De Veer v Jip Van Assendelft | 2-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/11/05 09:00 | Jip Van Assendelft v Lawrence Bataljin | 7-6,6-2 |