| UTR Pro Tennis Series Dubai | 2022/01/12 07:30 | Kai Lemstra v Martins Podzus | 2-6,4-6 |
| UTR Pro Tennis Series Dubai | 2022/01/11 09:00 | Kai Lemstra v Mateusz Terczynski | 6-1,5-1 |
| UTR Pro Tennis Series Dubai | 2022/01/10 04:30 | Dan Alexandru Tomescu v Kai Lemstra | 2-6,4-6 |
| UTR Pro Tennis Series Dubai | 2022/01/08 04:30 | Kai Lemstra v Simon Roberts | 0-0 |
| UTR Pro Tennis Series Dubai | 2022/01/07 04:30 | Michael Zhu v Kai Lemstra | 7-6,6-2 |
| UTR Pro Tennis Series Dubai | 2022/01/06 06:00 | David Pichler v Kai Lemstra | 6-4,4-6,4-6 |
| UTR Pro Tennis Series Dubai | 2022/01/05 07:30 | Mircea-Alexandru Jecan v Kai Lemstra | 6-4,7-5 |
| UTR Pro Tennis Series Dubai | 2022/01/03 10:50 | Jonathan Eysseric v Kai Lemstra | 6-3,6-1 |
| UTR Pro Tennis Series Dubai | 2022/01/13 06:00 | Mateusz Terczynski v Igor Sijsling | 4-6,0-6 |
| UTR Pro Tennis Series Dubai | 2022/01/11 09:00 | Dan Alexandru Tomescu v Igor Sijsling | 6-7,3-6 |
| UTR Pro Tennis Series Dubai | 2022/01/10 04:30 | Igor Sijsling v Martins Podzus | 4-6,6-1,4-6 |
| UTR Pro Tennis Series Dubai | 2022/01/08 07:30 | Igor Sijsling v Ilya Snitari | 1-6,1-6 |
| UTR Pro Tennis Series Dubai | 2022/01/07 07:30 | Oscar Jose Gutierrez v Igor Sijsling | 4-6,6-1,6-1 |
| UTR Pro Tennis Series Dubai | 2022/01/06 09:00 | Martins Podzus v Igor Sijsling | 2-6,6-7 |
| UTR Pro Tennis Series Dubai | 2022/01/03 06:00 | Igor Sijsling v Simon Roberts | 6-3,6-1 |
| Challenger Lisbon | 2021/09/27 15:10 | Igor Sijsling v Andrea Pellegrino | 0-6,4-6 |