| UTR Pro Tennis Series Portoroz | 2021/08/18 08:00 | George Botezan v Olexiy Kolisnyk | 5-7,1-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/17 09:30 | Teodor Ureche v Olexiy Kolisnyk | 0-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Olexiy Kolisnyk v Federico Zeballos | 2-6,6-2,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 06:30 | Olexiy Kolisnyk v Jordi Mas De Ugarte | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/13 06:30 | Xavier Gabarro v Olexiy Kolisnyk | 3-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 13:00 | Markos Kalovelonis v Olexiy Kolisnyk | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/11 07:00 | Jaume Pla Malfeito v Olexiy Kolisnyk | 2-6,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/09 11:30 | Andrey Chepelev v Olexiy Kolisnyk | 2-6,4-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/19 08:00 | George Botezan v Lawrence Bataljin | 6-4,2-6,2-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/18 08:00 | Teodor Ureche v Lawrence Bataljin | 5-7,1-6 |
| UTR Pro Tennis Series Portoroz | 2021/08/16 09:30 | Grgo Dujmovic v Lawrence Bataljin | 4-6,7-5,1-6 |
| ITF M15 Xativa | 2021/08/01 13:00 | Lawrence Bataljin v Grigoriy Korobeynikov | 7-5,2-6,8-10 |
| ITF M25 Gandia | 2021/07/19 10:00 | Lawrence Bataljin v Juan P Canas Garcia | 4-6,3-6 |
| ITF M25 Gandia | 2021/07/18 09:00 | Roman Revkov v Lawrence Bataljin | 1-6,0-6 |
| ITF M25 Telfs | 2021/07/12 08:00 | Lawrence Bataljin v Hasan Ibrahim | 6-7,7-6,7-10 |
| ITF M25 Marburg | 2021/07/05 10:05 | Lawrence Bataljin v Maik Steiner | 4-6,3-6 |