Stadium: Central Court Round: 19 Ground: Hardcourt indoor
| ITF M25 Idanha-A-Nova | 2021/07/16 08:00 | Alexander Cozbinov v Zane Khan | 0-6,5-7 |
| ITF M25 Idanha-A-Nova | 2021/07/15 07:50 | Alexander Cozbinov v Francisco Cabral | 7-5,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/13 14:05 | Sho Shimabukuro v Alexander Cozbinov | 3-6,6-3,6-7 |
| ITF M25 Belgrade | 2021/07/01 07:00 | Edoardo Lavagno v Alexander Cozbinov | 6-4,6-3 |
| Davis Cup | 2021/06/25 09:30 | Marco De Rossi v Alexander Cozbinov | 3-6,6-3,3-6 |
| Davis Cup | 2021/06/24 09:30 | Fresk Sylhasi v Alexander Cozbinov | 0-6,1-6 |
| Davis Cup | 2021/06/22 09:25 | Eric Cervos Noguer v Alexander Cozbinov | 0-6,0-6 |
| ITF M15 Skopje | 2021/06/08 10:30 | Alexander Cozbinov v Alexander Weis | 5-7,4-6 |
| ITF M15 Doboj | 2021/07/14 08:30 | Duje Kekez v Aldin Setkic | 7-5,7-6 |
| ITF M25 Velenje | 2021/07/06 09:45 | Lenny Hampel v Aldin Setkic | 3-6,6-3,6-2 |
| Challenger Prostejov | 2021/06/13 13:55 | Jelle Sels v Aldin Setkic | 6-3,6-1 |
| ITF M15 Sarajevo | 2021/06/02 12:30 | Din Karahodza v Aldin Setkic | 6-4,6-2 |
| ITF M25 Kiseljak | 2021/05/29 10:00 | Matheus Pucinelli De Almeida v Aldin Setkic | 6-4,6-2 |
| ITF M25 Kiseljak | 2021/05/28 14:45 | Gauthier Onclin v Aldin Setkic | 3-6,6-7 |
| ITF M25 Kiseljak | 2021/05/27 09:00 | Bozo Barun v Aldin Setkic | 2-6,4-6 |
| ITF M25 Kiseljak | 2021/05/26 08:00 | Lilian Breut v Aldin Setkic | 3-6,3-6 |