Stadium: Court 10 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Zlatibor | 2021/09/13 11:00 | Dusan Rajic v Ali Habib | 6-2,3-6,3-10 |
| ITF M15 Zlatibor | 2021/09/12 10:00 | Dusan Rajic v Vlad Andrei Dumitru | 6-7,7-5,10-6 |
| ITF M15 Ulcinj | 2021/09/08 08:00 | Gabriel Donev v Dusan Rajic | 6-4,6-7,7-5 |
| ITF M15 Ulcinj | 2021/09/06 13:00 | Matthew Dellavedova v Dusan Rajic | 2-6,5-7 |
| ITF M15 Ulcinj | 2021/09/06 07:30 | Dusan Rajic v Igor Smilansky | 6-4,6-4 |
| ITF M15 Ulcinj | 2021/09/05 07:30 | Ammar Elamin v Dusan Rajic | 4-6,4-6 |
| ITF M15 Ulcinj | 2021/09/01 11:25 | Matthew Dellavedova v Dusan Rajic | 6-2,6-3 |
| ITF M15 Ulcinj | 2021/08/30 11:30 | Dusan Obradovic v Dusan Rajic | 4-6,6-3,2-10 |
| ITF M15 Monastir | 2021/09/16 08:00 | Michael Zhu v Li Tu | 3-6,2-6 |
| ITF M15 Monastir | 2021/09/14 09:00 | Michael Zhu v Matas Vasiliauskas | 7-5,6-2 |
| ITF M15 Monastir | 2021/09/08 14:00 | Michael Zhu v Stuart Parker | 2-6,6-4,5-7 |
| ITF M15 Monastir | 2021/09/07 08:00 | Matas Vasiliauskas v Michael Zhu | 2-6,4-6 |
| ITF M15 Monastir | 2021/09/06 09:30 | Jiaqi Duan v Michael Zhu | 4-6,3-6 |
| ITF M15 Monastir | 2021/09/05 08:00 | Egor Tsarapkin v Michael Zhu | 1-6,2-6 |
| ITF M15 Monastir | 2021/08/30 10:00 | Johannes Ingildsen v Michael Zhu | 6-2,6-0 |
| ITF M15 Monastir | 2021/08/29 08:00 | Eduardo Lacalle v Michael Zhu | 6-1,6-2 |