Stadium: M.A.R.A - Court Round: 45
| Challenger Koblenz | 2019/01/15 09:00 | Peter Torebko v Kai Lemstra | 6-1,1-6,6-1 |
| ITF M15 Monastir | 2019/01/10 10:00 | Kai Lemstra v Jonathan Mridha | 1-6,6-3,2-6 |
| ITF M15 Monastir | 2019/01/09 11:45 | Christian Seraphim v Kai Lemstra | 4-6,4-6 |
| ITF Czech Republic F12 | 2018/11/27 09:00 | Remy Bertola v Kai Lemstra | 6-4,6-3 |
| ITF Czech Republic F12 | 2018/11/26 09:00 | David Juras v Kai Lemstra | 6-4,3-6,6-7 |
| ITF Czech Republic F11 Qual | 2018/11/19 11:00 | Wojciech Marek v Kai Lemstra | 3-6,6-3,7-5 |
| Challenger Eckental | 2018/10/27 17:00 | Kai Lemstra v Jan Satral | 5-7,1-6 |
| ITF Czech Republic F7 | 2018/10/23 11:10 | Kai Lemstra v Piotr Grynkowski | 4-6,6-1,4-6 |
| ITF M15 Antalya | 2019/01/16 07:00 | Jaime Fermosell v Matyas Fuele | 3-6,1-6 |
| ITF M15 Antalya | 2019/01/14 12:00 | Jaime Fermosell v Mihnea L.S. Turcu | 6-1,6-2 |
| ITF Finland F4 | 2018/11/11 09:00 | Jaime Fermosell v Philipp Klimov | 0-6,7-5,6-3 |
| ITF Finland F4 | 2018/11/10 08:00 | Jaime Fermosell v Peter Sillanpaa | 3-6,6-4,6-3 |
| ITF Spain F28 Qual | 2018/09/16 12:00 | Chinmaya Dev Chauhan v Jaime Fermosell | 1-6,0-6 |
| ITF Spain F28 Qual | 2018/09/15 12:00 | Anas Chakrouni v Jaime Fermosell | 2-6,1-6 |
| ITF Spain F24 | 2018/08/20 12:00 | Jaime Fermosell v Jerome Catalan | 4-6,6-2,6-3 |
| ITF Spain F24 | 2018/08/19 16:00 | Jaime Fermosell v Ruben Busch | 6-0,7-6 |