Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| 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 M25 Idanha-A-Nova | 2021/07/14 11:50 | Mehluli D A Sibanda v Garrett Johns | 1-6,5-7 |
| ITF M15 Antalya | 2021/02/28 11:00 | Mehluli D A Sibanda v Benedikt Henning | 2-6,1-6 |
| Challenger Potchefstroom | 2020/03/12 08:00 | Fabien Reboul v Mehluli D A Sibanda | 6-4,6-2 |
| Challenger Potchefstroom | 2020/03/09 12:15 | Mehluli D A Sibanda v Courtney John Lock | 7-6,6-4 |
| Davis Cup | 2020/03/06 08:00 | Mehluli D A Sibanda v Hazem Naw | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2020/02/12 14:15 | Volodymyr Uzhylovskyi v Mehluli D A Sibanda | 1-6,6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2020/02/06 09:55 | Mehluli D A Sibanda v Ergi Kirkin | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2020/02/05 08:00 | Mehluli D A Sibanda v Giuseppe Tresca | 6-4,6-2 |