Stadium: Center Court Round: 14 Ground: Hardcourt outdoor
| Challenger - Pozoblanco | 2021/07/23 20:20 | Federico Zeballos v Gregoire Barrere | 4-6,3-6 |
| Challenger - Pozoblanco | 2021/07/21 15:00 | Federico Zeballos v Filip Cristian Jianu | 7-6,6-4 |
| Challenger - Pozoblanco | 2021/07/20 15:00 | Borna Gojo v Federico Zeballos | 4-6,6-7 |
| Challenger - Pozoblanco | 2021/07/19 15:00 | Matteo Martineau v Federico Zeballos | 6-2,6-3 |
| Challenger - Todi | 2021/07/12 13:00 | Matheus P De Almeida v Federico Zeballos | 6-1,6-3 |
| Challenger - Todi | 2021/07/11 08:00 | Alessio De Bernardis v Federico Zeballos | 5-7,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/24 08:30 | Kuzey Cekirge v Federico Zeballos | 1-6,6-4,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 09:30 | Federico Zeballos v Jay Friend | 6-3,5-1 |
| ITF - M25 Idanha-A-Nova | 2021/07/22 08:00 | Alexander Cozbinov v Nicolas Moreno De Alboran | 6-3,6-7,6-7 |
| ITF - M25 Idanha-A-Nova | 2021/07/21 11:35 | Alexander Cozbinov v Mehluli D A Sibanda | 6-3,6-0 |
| 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 Belgrad | 2021/07/01 07:00 | Edoardo Lavagno v Alexander Cozbinov | 6-4,6-3 |
| Cupa Davis | 2021/06/25 09:30 | Marco De Rossi v Alexander Cozbinov | 3-6,6-3,3-6 |
| Cupa Davis | 2021/06/24 09:30 | Fresk Sylhasi v Alexander Cozbinov | 0-6,1-6 |