| ITF Germany F5 | 2018/06/25 08:00 | David Chaplefeh Forchap v Karlo Cubelic | 1-6,4-6 |
| ITF Germany F5 | 2018/06/25 08:00 | Gabriel Donev v Karlo Cubelic | 6-2,6-2 |
| ITF Germany F5 | 2018/06/24 15:00 | Karlo Cubelic v Jordi Walder | 7-5,3-6,6-2 |
| ITF Germany F4 | 2018/06/18 11:00 | Roy Sarut De Valk v Karlo Cubelic | 6-1,6-1 |
| ITF Germany F4 | 2018/06/17 12:00 | Karlo Cubelic v Jonathan Morr | 7-5,6-4 |
| ITF Germany F4 | 2018/06/16 08:00 | Pelle Boerma v Karlo Cubelic | 1-6,2-6 |
| ITF Tunisia F16 | 2018/04/22 12:00 | Karlo Cubelic v Hugo Pierre | 2-6,5-7 |
| ITF Tunisia F15 | 2018/04/15 11:30 | Sean Hodkin v Karlo Cubelic | 6-4,6-3 |
| ITF Netherlands F2 Qual | 2018/06/30 07:00 | Tom Clavel v Mike Loccisano | 6-4,0-6,3-6 |
| ITF Spain F4 | 2018/02/03 12:00 | Alexander Igoshin v Tom Clavel | 6-0,6-4 |
| ITF Spain F3 | 2018/01/28 13:00 | Tom Clavel v Sergi Perez Contri | 2-6,1-6 |
| ITF Spain F3 | 2018/01/28 10:00 | Tom Clavel v Joen Moth-Poulsen | 6-2,6-3 |
| ITF Netherlands F7 | 2017/08/26 09:00 | Tom Clavel v Marvin Greven | 3-6,2-6 |
| ITF Netherlands F6 | 2017/08/20 07:00 | Nick Chappell v Tom Clavel | 6-1,6-1 |
| ITF Netherlands F6 | 2017/08/19 10:00 | Tom Clavel v Quin Verstegen | 6-3,6-3 |
| ITF Netherlands F5 | 2017/08/13 08:00 | Roy Sarut De Valk v Tom Clavel | 6-3,6-1 |