Stadium: MTA 16 Round: 62 Ground: Clay
| ITF M15 Jerusalem | 2021/05/13 07:00 | Karlo Cubelic v Felix Corwin | 2-6,0-6 |
| ITF M15 Jerusalem | 2021/05/12 12:00 | Roi Ginat v Karlo Cubelic | 1-6,3-6 |
| ITF M15 Jerusalem | 2021/05/11 06:30 | Karlo Cubelic v Charles Minc | 5-7,6-4,10-5 |
| ITF M15 Jerusalem | 2021/05/10 07:00 | Karlo Cubelic v Stefan Simeunovic | 6-1,6-1 |
| ITF M15 Ramat Hasharon | 2021/05/04 07:00 | Karlo Cubelic v Bradley Paliska | 4-6,4-6 |
| ITF M15 Ramat Hasharon | 2021/05/03 07:00 | Karlo Cubelic v Ofek Amoyal | 6-3,6-3 |
| ITF M25 Meerbusch | 2021/04/11 13:00 | Tomas Papik v Karlo Cubelic | 3-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/04/06 07:30 | Karlo Cubelic v Lukas Pokorny | 6-7,1-6 |
| ITF M15 Antalya | 2021/05/30 07:30 | Vitali Shvets v Federico Marchetti | 4-6,0-6 |
| ITF M15 Monastir | 2021/05/02 09:30 | Miguel Fernando Pereira v Vitali Shvets | 6-4,6-3 |
| ITF M15 Monastir | 2021/04/25 08:00 | Benjamin Pietri v Vitali Shvets | 6-2,6-1 |
| ITF M15 Monastir | 2021/04/19 13:00 | Vitali Shvets v Justin Roberts | 4-6,1-6 |
| ITF M15 Monastir | 2021/04/18 15:00 | Vitali Shvets v George Davies | 6-7,6-4,10-7 |
| ITF M15 Monastir | 2021/04/05 12:30 | Vitali Shvets v Buvaysar Gadamauri | 6-2,4-6,3-10 |
| ITF M15 Monastir | 2021/04/05 08:00 | Ioannis Kountourakis v Vitali Shvets | 4-6,6-0,6-10 |
| ITF M15 Monastir | 2021/03/28 11:30 | Riccardo Maiga v Vitali Shvets | 6-3,6-2 |