| Davis Kupa | 2021/06/24 09:30 | Gorazd Srbljak v Marco De Rossi | 1-6,6-3,1-6 |
| ITF M15 Majadahonda | 2021/05/03 10:45 | Max Houkes v Marco De Rossi | 6-2,6-4 |
| ITF M15 Majadahonda | 2021/05/02 12:00 | Digvijay Pratap Singh v Marco De Rossi | 7-6,0-6,3-10 |
| ITF M15 Las Palmas | 2021/04/26 12:00 | Thomas Deschamps v Marco De Rossi | 6-2,6-4 |
| ITF M15 Antalya | 2021/04/12 09:00 | Cheong-Eui Kim v Marco De Rossi | 3-6,7-5,10-8 |
| ITF M15 Antalya | 2021/04/11 07:00 | Marco De Rossi v Niklas Rohrer | 6-3,6-2 |
| ITF M15 Antalya | 2021/04/05 07:00 | Michalis Sakellaridis v Marco De Rossi | 6-3,3-6,10-5 |
| ITF M15 Antalya | 2021/04/04 10:00 | Giuseppe La Vela v Marco De Rossi | 4-6,0-6 |
| Davis Kupa | 2021/06/24 09:30 | Fresk Sylhasi v Alexander Cozbinov | 0-6,1-6 |
| Davis Kupa | 2021/06/22 09:25 | Eric Cervos Noguer v Alexander Cozbinov | 0-6,0-6 |
| ITF M15 Szkopje | 2021/06/08 10:30 | Alexander Cozbinov v Alexander Weis | 5-7,4-6 |
| ITF M15 Kouvola | 2021/05/28 09:05 | Alessandro Bega v Alexander Cozbinov | 6-4,6-0 |
| ITF M15 Kouvola | 2021/05/27 09:55 | Karl Kiur Saar v Alexander Cozbinov | 0-6,1-6 |
| ITF M15 Kouvola | 2021/05/26 07:20 | Dominik Palan v Alexander Cozbinov | 6-7,2-6 |
| ITF M15 Tbilisi | 2021/05/19 08:35 | Zane Khan v Alexander Cozbinov | 3-6,6-4,6-0 |
| ITF M15 Jeruzsálem | 2021/05/13 07:30 | Yshai Oliel v Alexander Cozbinov | 6-3,4-6,6-3 |