Stadium: Court 5 Round: 25 Ground: Clay
| Challenger - Praga | 2021/08/23 11:00 | Tiago Cacao v Facundo Diaz Acosta | 4-6,0-6 |
| Challenger - Praga | 2021/08/22 12:00 | Alexander Donski v Facundo Diaz Acosta | 6-4,2-6,5-7 |
| ITF - M25 Prostejov | 2021/08/21 07:50 | Facundo Diaz Acosta v Nikolas Sanchez Izquierdo | 4-6,6-1,4-6 |
| ITF - M25 Prostejov | 2021/08/20 10:00 | Facundo Diaz Acosta v Dalibor Svrcina | 6-3,6-3 |
| ITF - M25 Prostejov | 2021/08/19 11:15 | Lucas Miedler v Facundo Diaz Acosta | 1-6,2-6 |
| ITF - M25 Prostejov | 2021/08/18 09:45 | Jiri Jenicek v Facundo Diaz Acosta | 0-6,0-6 |
| ITF - M25 Prostejov | 2021/08/17 10:30 | Victor Sklenka v Facundo Diaz Acosta | 0-6,0-6 |
| Challenger - Praga | 2021/08/09 09:55 | Adrian Andreev v Facundo Diaz Acosta | 2-6,6-4,6-3 |
| ITF - M15 Warmbad-Villach | 2021/08/20 10:55 | Sebastian Prechtel v Matteo Donati | 3-6,6-4,3-6 |
| ITF - M15 Warmbad-Villach | 2021/08/19 12:55 | Matteo Donati v Franco Ribero | 6-1,6-1 |
| ITF - M15 Warmbad-Villach | 2021/08/17 13:25 | Matteo Donati v Niklas Rohrer | 6-3,6-3 |
| Challenger - San Marino | 2021/08/08 09:45 | Alexander Shevchenko v Matteo Donati | 6-3,3-6,7-5 |
| Challenger - Iasi | 2021/07/14 11:05 | Felipe Meligeni Rodrigues Alves v Matteo Donati | 6-3,6-3 |
| Challenger - Iasi | 2021/07/12 09:55 | Stefan Palosi v Matteo Donati | 4-6,4-6 |
| ITF - M25 Wroclaw | 2021/06/27 14:00 | Matteo Donati v Dominik Kellovsky | 6-2,6-7,6-10 |
| ITF - M15 Cairo | 2021/04/15 13:20 | Lukas Krainer v Matteo Donati | 6-2,4-6,6-4 |