Stadium: Court 6 Round: 62 Ground: Clay
| ITF M15 Cairo | 2022/04/12 07:55 | Kai Lemstra v Pietro R Scomparin | 6-2,2-6,6-10 |
| ITF M15 Cairo | 2022/04/11 09:00 | Kai Lemstra v Marco Mania | 6-2,7-5 |
| Challenger Turin | 2022/02/27 15:05 | Kai Lemstra v Kenny de Schepper | 3-6,1-6 |
| ITF M15 Oberhaching | 2022/02/13 08:00 | Dusan Obradovic v Kai Lemstra | 1-6,6-4,10-8 |
| ITF M25 Monastir | 2022/01/31 13:30 | Shinji Hazawa v Kai Lemstra | 6-1,6-2 |
| ITF M25 Monastir | 2022/01/31 09:00 | Kai Lemstra v Devin Badenhorst | 6-3,6-1 |
| ITF M25 Monastir | 2022/01/30 12:30 | Luigi Castelletti v Kai Lemstra | 2-6,7-6,4-10 |
| ITF M15 Monastir | 2022/01/26 09:00 | Kai Lemstra v Omar Giacalone | 5-7,2-6 |
| ITF M25 Trimbach | 2022/03/14 12:30 | Sandro Kopp v Kevin Portmann | 6-1,6-0 |
| ITF M15 Doha Qual | 2021/12/26 12:00 | Kevin Portmann v Ali Alshati | 2-6,1-6 |
| ITF M15 Doha Qual | 2021/12/19 15:20 | Mousa Alkotop v Kevin Portmann | 6-1,6-2 |
| ITF M15 Doha | 2021/12/12 12:00 | Pranash Babu v Kevin Portmann | 6-2,5-7,10-7 |
| ITF M15 Cairo | 2021/11/28 14:30 | Ashraf El Sayed v Kevin Portmann | 6-0,5-7,10-3 |
| ITF M15 Antalya | 2021/10/24 07:00 | Koray Kirci v Kevin Portmann | 6-1,6-1 |
| ITF M15 Doha Qual | 2021/10/17 13:00 | Danylo Semenov v Kevin Portmann | 6-1,4-6,10-6 |
| ITF M15 Cairo | 2021/07/25 13:30 | Kevin Portmann v Leonardo Aboian | 0-6,1-6 |