Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Porec | 2021/03/09 08:55 | Sebastian Prechtel v Duje Kekez | 6-3,4-6,10-6 |
| ITF M15 Sibenik | 2021/05/20 08:00 | Zsombor Piros v Sebastian Prechtel | 6-1,6-1 |
| ITF M15 Sibenik | 2021/05/19 10:15 | Sebastian Prechtel v Sean Cuenin | 6-3,7-5 |
| ITF M15 Sibenik | 2021/05/18 08:00 | Sebastian Prechtel v Nikola Basic | 6-2,6-1 |
| ITF M15 Sibenik | 2021/05/17 09:20 | Sebastian Prechtel v Adan Freire Da Silva | 6-2,6-2 |
| ITF M15 Sibenik | 2021/05/16 07:30 | Sebastian Prechtel v Alexander Mannapov | 7-5,6-1 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Sebastian Prechtel v Buvaysar Gadamauri | 2-6,4-6 |
| ITF M15 Sibenik | 2021/04/24 10:05 | Aldin Setkic v Sebastian Prechtel | 4-6,6-2,7-5 |
| ITF M15 Sibenik | 2021/04/23 08:00 | Sebastian Prechtel v Alexander Erler | 6-4,6-4 |
| 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 |
| ITF M15 Sibenik | 2021/05/16 10:00 | Duje Kekez v Matic Dimic | 6-2,6-0 |
| ITF M15 Prijedor | 2021/05/11 09:50 | Duje Kekez v Federico Campana | 4-6,6-0,7-10 |
| ITF M15 Prijedor | 2021/05/10 13:30 | Duje Kekez v Valentin Lapalu | 6-4,6-4 |
| ITF M15 Prijedor | 2021/05/09 12:30 | Duje Kekez v Obrad Markovski | 6-4,6-3 |
| ITF M15 Sibenik | 2021/04/24 08:00 | David Pichler v Duje Kekez | 6-2,7-6 |