Stadium: Court 4 Round: 26 Ground: Clay
| ITF M15 Doboj | 2021/07/14 13:15 | Stefan Milicevic v Andrej Nedic | 7-6,3-6,5-7 |
| ITF M15 Szarajevó | 2021/05/31 10:00 | Andrej Nedic v Nicolas Zanellato | 3-6,3-6 |
| ITF M15 Brcko | 2021/05/18 07:00 | Stefan Micov v Andrej Nedic | 3-6,6-3,10-6 |
| ITF M15 Brcko | 2021/05/16 11:00 | Andrej Nedic v Joel Vincent Link | 6-7,6-4,10-4 |
| ITF M15 Doboj | 2021/07/14 08:30 | Duje Kekez v Aldin Setkic | 7-5,7-6 |
| ITF M25 Velenje | 2021/07/07 08:00 | Toby Alex Kodat v Duje Kekez | 3-6,6-1,7-5 |
| ITF M15 Szarajevó | 2021/06/03 09:00 | Skander Mansouri v Duje Kekez | 7-5,6-4 |
| ITF M15 Szarajevó | 2021/06/02 09:00 | Duje Kekez v Sebastian Prechtel | 6-1,6-1 |
| ITF M25 Kiseljak | 2021/05/25 13:05 | Sebastian Prechtel v Duje Kekez | 3-6,6-3,6-4 |
| ITF M15 Sibenik | 2021/05/19 17:55 | Duje Kekez v Dan Added | 0-6,0-6 |
| ITF M15 Sibenik | 2021/05/18 08:30 | Duje Kekez v Julien Penzlin | 6-3,6-2 |
| ITF M15 Sibenik | 2021/05/17 10:25 | Duje Kekez v Admir Kalender | 6-4,0-6,10-8 |