Stadium: Court 5 Round: 62 Ground: Clay
| ITF Germany F8 Qual | 2018/07/15 10:00 | Andre, Felix v Karlo Cubelic | 2-6,1-6 |
| ITF Netherlands F3 | 2018/07/08 09:30 | Huertas Del Pino Cordova, Arklon v Karlo Cubelic | 6-1,7-5 |
| ITF Netherlands F3 | 2018/07/07 12:15 | Karlo Cubelic v Grunberger, Daniel | 3-6,6-3,6-3 |
| ITF Netherlands F3 | 2018/07/07 07:30 | Karlo Cubelic v Clavel, Tom | 6-4,6-2 |
| ITF Germany F5 | 2018/06/25 08:00 | Forchap, David Chaplefeh 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 Walder, Jordi | 7-5,3-6,6-2 |
| ITF Germany F4 | 2018/06/18 11:00 | de Valk, Roy Sarut v Karlo Cubelic | 6-1,6-1 |
| ITF Germany F8 Qual | 2018/07/15 10:00 | Allemby, James v Mansson, Marcus | 4-6,5-7 |
| ITF Spain F15 Qual | 2018/06/10 07:00 | Mansson, Marcus v Ignacio B Alia | 4-6,4-6 |
| ITF Sweden F3 Qual | 2018/05/20 11:25 | Mansson, Marcus v Arvidsson Ehn, Jakob | 7-5,7-6 |
| ITF Sweden F3 Qual | 2018/05/19 12:55 | Mansson, Marcus v Klov Nilsson, Jesper | 6-3,6-3 |
| ITF Sweden F2 Qual | 2018/05/12 08:00 | Mansson, Marcus v Nokic, Almir | 3-6,6-2,1-6 |
| ITF Sweden F1 | 2018/05/08 12:05 | Mansson, Marcus v Brydolf, Patrik | 4-6,4-6 |
| ITF France F6 Qual | 2018/03/17 08:30 | Mansson, Marcus v Broge, Steven | 6-1,2-6,6-2 |
| ITF France F5 Qual | 2018/03/11 10:40 | Pierre Delage v Mansson, Marcus | 6-4,5-7,7-6 |