Round: 44 Ground: Hardcourt outdoor
| ITF M15 Saarlouis | 2019/07/03 12:10 | Fabrizio Ornago v Karlo Cubelic | 6-1,6-1 |
| ITF M15 Saarlouis | 2019/07/01 10:00 | Eduardo Dischinger v Karlo Cubelic | 6-3,6-2 |
| ITF M15 Saarlouis | 2019/07/01 08:00 | Marco Neubau v Karlo Cubelic | 1-6,6-7 |
| ITF M15 Kamen | 2019/06/27 10:20 | Javier Barranco Cosano v Karlo Cubelic | 6-0,6-2 |
| ITF M15 Kamen | 2019/06/26 15:25 | Karlo Cubelic v Nicholas Bybel | 6-1,7-6 |
| ITF M15 Troisdorf | 2019/05/06 07:00 | Oscar Galimardanov v Karlo Cubelic | 3-6,6-3,10-6 |
| ITF M15 Sharm El Sheikh | 2019/04/09 08:00 | Karlo Cubelic v Lucas Hellfritsch | 5-7,1-6 |
| ITF M15 Tel Aviv | 2019/03/27 08:00 | Karlo Cubelic v Christoffer Solberg | 3-6,6-4,4-6 |