Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2019/01/09 11:45 | Seraphim, Christian 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 | Juras, David v Kai Lemstra | 6-4,3-6,6-7 |
| Czech Republic F11, Singles Qualifying | 2018/11/19 11:00 | Marek, Wojciech v Kai Lemstra | 3-6,6-3,7-5 |
| Challenger Eckental | 2018/10/27 17:00 | Kai Lemstra v Satral, Jan | 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 Czech Republic F7 | 2018/10/22 14:00 | Kai Lemstra v Vitek Horak | 6-3,6-2 |
| Challenger Ismaning | 2018/10/16 15:25 | Gregoire Barrere v Kai Lemstra | 7-6,6-3 |
| ITF - M15 Monastir | 2019/01/09 11:05 | Filip Cristian Jianu v Jonathan Mridha | 5-7,3-6 |
| ITF Sweden F5 | 2018/10/05 14:30 | Niklas-Salminen, Patrick v Jonathan Mridha | 7-6,6-4 |
| ITF Sweden F5 | 2018/10/04 13:35 | Eriksson, Markus v Jonathan Mridha | 7-5,3-6,4-6 |
| ITF Sweden F5 | 2018/10/03 15:45 | Jonathan Mridha v Caruana, Liam | 7-6,6-0 |
| ITF Sweden F5 | 2018/10/01 13:00 | George Loffhagen v Jonathan Mridha | 6-2,6-7,4-6 |
| ITF Sweden F4 | 2018/09/26 12:50 | Jonathan Mridha v Eriksson, Markus | 6-4,4-6,5-7 |
| ITF Sweden F4 | 2018/09/25 14:50 | Jonathan Stenberg v Jonathan Mridha | 2-6,3-6 |
| Coupe Davis | 2018/09/16 13:45 | Ehrat, Sandro v Jonathan Mridha | 6-4,3-6,4-6,6-7 |