Estádio: Pista 2 Round: 26 Ground: Hardcourt outdoor
| Challenger - Oeiras | 2021/05/24 10:00 | Filip Cristian Jianu v Federico Zeballos | 6-4,7-5 |
| 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 |
| Barcelona - UTR Pro Tennis Series - Feminino | 2021/06/24 08:30 | Kuzey Cekirge v Federico Zeballos | 1-6,6-4,7-5 |
| Barcelona - UTR Pro Tennis Series - Feminino | 2021/06/23 09:30 | Federico Zeballos v Jay Friend | 6-3,5-1 |
| Barcelona - UTR Pro Tennis Series - Feminino | 2021/06/22 12:30 | Federico Zeballos v Juan C Garcia Garcia | 6-3,5-4 |
| Barcelona - UTR Pro Tennis Series - Feminino | 2021/06/21 08:00 | Alejandro Garcia v Federico Zeballos | 3-6,5-7 |
| Challenger - Pozoblanco | 2021/07/19 16:30 | Filip Cristian Jianu v Nicolas Alvarez Varona | 6-2,6-4 |
| Challenger Iasi | 2021/07/15 09:00 | Filip Cristian Jianu v Riccardo Bonadio | 6-7,2-6 |
| Challenger Iasi | 2021/07/13 07:00 | Dan Alexandru Tomescu v Filip Cristian Jianu | 4-6,3-6 |
| Challenger - Salzburgo | 2021/07/05 09:00 | Jiri Lehecka v Filip Cristian Jianu | 7-5,6-4 |
| Challenger - Salzburgo | 2021/07/04 08:00 | Miljan Zekic v Filip Cristian Jianu | 6-7,3-6 |
| ATP - Eastbourne | 2021/06/19 14:20 | Filip Cristian Jianu v James Duckworth | 4-6,3-6 |
| Challenger - Almaty | 2021/06/16 06:00 | Riccardo Bonadio v Filip Cristian Jianu | 6-1,7-6 |
| Challenger - Almaty | 2021/06/15 04:00 | Tung-Lin Wu v Filip Cristian Jianu | 4-6,5-7 |