Stadium: Court 4 Round: 26 Ground: Clay
| ITF M15 Prijedor | 2021/05/12 11:00 | Marko Tepavac v Matheus P De Almeida | 4-6,5-7 |
| ITF M15 Káhira | 2021/05/08 09:00 | Matheus P De Almeida v Jose Fco. Vidal Azorin | 6-4,6-3 |
| ITF M15 Káhira | 2021/05/07 10:10 | Paul Jubb v Matheus P De Almeida | 2-6,0-6 |
| ITF M15 Káhira | 2021/05/06 08:00 | Juan Pablo Paz v Matheus P De Almeida | 3-6,6-4,1-6 |
| ITF M15 Káhira | 2021/05/05 08:00 | Rimpei Kawakami v Matheus P De Almeida | 1-6,3-6 |
| ITF M15 Córdoba | 2021/04/10 19:45 | Matheus P De Almeida v Gonzalo Lama | 5-7,6-7 |
| ITF M15 Córdoba | 2021/04/10 14:30 | Matheus P De Almeida v Santiago Rodriguez Taverna | 6-3,6-4 |
| ITF M15 Córdoba | 2021/04/08 13:00 | Matheus P De Almeida v Franco Emanuel Egea | 6-3,6-2 |
| ITF M15 Prijedor | 2021/05/11 08:00 | Matic Dimic v Bozo Barun | 2-6,6-2,7-10 |
| ITF M15 Prijedor | 2021/05/10 08:00 | Elgin Khoeblal v Bozo Barun | 2-6,5-7 |
| ITF M15 Prijedor | 2021/05/09 07:00 | Lilian Breut v Bozo Barun | 6-2,2-6,8-10 |
| ITF M15 Šibenik | 2021/04/21 12:40 | Alen Rogic-Hadzalic v Bozo Barun | 7-6,7-5 |
| Challenger Split | 2021/04/12 08:30 | Bozo Barun v Lukáš Klein | 1-6,4-6 |
| Challenger Split - kvalifikace | 2021/04/11 11:30 | Gian Marco Moroni v Bozo Barun | 3-6,6-2,6-7 |
| Challenger Split | 2021/04/04 09:00 | Blaz Kavcic v Bozo Barun | 6-4,6-3 |
| ITF M15 Opatija | 2021/03/23 10:50 | Francesco Passaro v Bozo Barun | 6-2,6-3 |