Stadion: Court 1 Round: 19 Ground: Clay
| Challenger - Oeiras | 2021/05/23 10:00 | Filip Cristian Jianu v Francisco Cabral | 6-7,6-4,6-2 |
| ITF - M25 - Vic | 2021/05/19 13:50 | Filip Cristian Jianu v Carlos Lopez Montagud | 6-7,4-6 |
| ITF - M15 - Antalya | 2021/05/07 06:55 | Filip Cristian Jianu v Orlando Luz | 1-6,6-3,3-6 |
| ITF - M15 - Antalya | 2021/05/06 11:10 | Filip Cristian Jianu v Jacopo Berrettini | 6-2,6-4 |
| ITF - M15 - Antalya | 2021/05/04 11:20 | Filip Cristian Jianu v Dali Blanch | 6-2,6-3 |
| Challenger - Tallahassee | 2021/04/23 18:00 | Filip Cristian Jianu v Denis Kudla | 6-7,6-3,5-7 |
| Challenger - Tallahassee | 2021/04/22 16:25 | Filip Cristian Jianu v Joao Menezes | 6-4,6-4 |
| Challenger - Tallahassee | 2021/04/20 19:55 | Dmitry Popko v Filip Cristian Jianu | 7-6,3-6,4-6 |
| Challenger - Oeiras | 2021/05/23 10:00 | Federico Zeballos v Vladyslav Orlov | 1-6,6-0,7-6 |
| UTR Pro Tennis Series - Florida | 2021/03/12 15:30 | Cristian C. Rodriguez Sanchez v Federico Zeballos | 7-6,1-6,6-6 |
| UTR Pro Tennis Series - Florida | 2021/03/11 20:00 | Fletcher Scott v Federico Zeballos | 6-1,6-1 |
| UTR Pro Tennis Series - Florida | 2021/03/10 20:00 | Matthew Segura v Federico Zeballos | 6-3,5-3 |
| UTR Pro Tennis Series - Florida | 2021/03/08 17:00 | Jorge Panta v Federico Zeballos | 3-6,6-2,6-3 |
| ITF - M25 - Naples | 2021/02/22 16:00 | Federico Zeballos v Rowland Phillips | 7-5,2-6,7-10 |
| ITF - M15 - Santo Domingo | 2020/12/08 14:30 | Federico Zeballos v Connor Farren | 0-6,6-3,3-6 |
| ITF - M15 - Santo Domingo | 2020/12/02 16:10 | Federico Zeballos v Juan Carlos Aguilar | 4-6,5-7 |