Stadium: Court 2 Round: 45 Ground: Clay
| ITF M15 Bad Schussenried | 2019/07/22 08:00 | Roy Sarut De Valk v Stepan Beresnev | 6-1,6-0 |
| ITF M15 Kramsach | 2019/07/15 12:00 | Roy Sarut De Valk v Luis Humberto Lopez | 6-3,5-7,3-10 |
| ITF M15 Kramsach | 2019/07/15 08:00 | Roy Sarut De Valk v Alexander Schager | 6-0,6-2 |
| ITF M25 Lasne | 2019/07/03 08:00 | Roy Sarut De Valk v Savriyan Danilov | 2-6,6-4,4-6 |
| ITF M25 Lasne | 2019/07/02 08:00 | Roy Sarut De Valk v Evzen Holis | 6-0,7-5 |
| ITF M25 Lasne | 2019/07/01 09:45 | Roy Sarut De Valk v Sahej Maker | 6-4,6-2 |
| ITF M15 Alkmaar | 2019/06/26 11:00 | Roy Sarut De Valk v Igor Sijsling | 6-4,1-6,2-6 |
| ITF M15 Alkmaar | 2019/06/25 09:00 | Julius Tverijonas v Roy Sarut De Valk | 3-6,3-6 |
| ITF M15 Bad Schussenried | 2019/07/22 08:00 | Giordan Kunz v Kai Lemstra | 1-6,1-6 |
| ITF M15 Kramsach | 2019/07/17 09:00 | Kai Lemstra v Bart Van Den Berg | 4-6,2-6 |
| ITF M15 Kramsach | 2019/07/15 13:30 | Kai Lemstra v Evzen Holis | 6-3,4-6,10-6 |
| ITF M15 Troisdorf | 2019/05/06 14:00 | Mick Veldheer v Kai Lemstra | 2-6,6-1,10-7 |
| ITF M15 Sharm El Sheikh | 2019/03/21 08:00 | Enrico Dalla Valle v Kai Lemstra | 6-1,6-1 |
| ITF M15 Sharm El Sheikh | 2019/03/20 09:40 | Stefan Palosi v Kai Lemstra | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2019/03/18 12:30 | Fabrizio Andaloro v Kai Lemstra | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2019/03/18 09:30 | Kai Lemstra v Dominik Nazaruk | 6-1,7-5 |