| 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 | 2021/08/17 09:30 | George Botezan v Grgo Dujmovic | 6-4,5-4 |
| UTR Pro Tennis Series Portoroz | 2021/08/16 09:30 | Grgo Dujmovic v Lawrence Bataljin | 4-6,7-5,1-6 |
| ITF M15 Sibenik | 2021/04/19 08:00 | Grgo Dujmovic v Mayeul Darras | 4-6,6-7 |
| ITF M15 Sibenik | 2021/04/18 08:00 | Grgo Dujmovic v Bjorn Nareyka | 7-6,6-0 |
| ITF M15 Rovinj | 2021/03/15 08:00 | Grgo Dujmovic v Gian Marco Ortenzi | 3-6,5-7 |
| ITF M15 Porec | 2021/03/07 12:00 | Matteo Donati v Grgo Dujmovic | 6-4,6-1 |
| Adriatic Tennis Series | 2020/06/15 15:03 | Grgo Dujmovic v Matija Pecotic | 1-6,1-5 |
| ITF M15 Antalya Qual | 2019/12/08 07:00 | Oleksandr Bielinskyi v Grgo Dujmovic | 6-2,6-2 |