Stadium: Center Court_1 Round: 25 Ground: Clay
| ITF M15 Esch/Alzette | 2021/07/22 10:00 | Gabriel Alejandro Hidalgo v Alexander Weis | 6-2,6-7,7-5 |
| ITF M15 Esch/Alzette | 2021/07/21 09:00 | Jeffrey Von Der Schulenburg v Alexander Weis | 4-6,4-6 |
| ITF M15 Esch/Alzette | 2021/07/20 11:00 | Alexander Weis v Gauthier Onclin | 7-6,2-6,7-6 |
| ITF M15 L'Aquila | 2021/07/18 11:25 | Federico Arnaboldi v Alexander Weis | 4-6,7-5,6-1 |
| ITF M15 L'Aquila | 2021/07/18 07:00 | Alexander Weis v Marcello Serafini | 6-4,6-2 |
| ITF M15 L'Aquila | 2021/07/16 09:45 | Alexander Weis v Andrea Basso | 7-5,1-6,6-2 |
| ITF M15 L'Aquila | 2021/07/15 13:00 | Luca Nardi v Alexander Weis | 3-6,6-7 |
| ITF M15 L'Aquila | 2021/07/14 13:10 | Alexander Weis v Giorgio Ricca | 6-7,7-6,6-4 |
| ITF M25 Denia | 2021/07/30 08:00 | Daniel Dutra Da Silva v Carlos Lopez Montagud | 3-6,6-7 |
| ITF M25 Denia | 2021/07/29 09:30 | Antoine Escoffier v Daniel Dutra Da Silva | 6-3,3-6,2-6 |
| ITF M25 Denia | 2021/07/28 07:55 | Lorenzo Joaquin Rodriguez v Daniel Dutra Da Silva | 6-7,1-6 |
| ITF M25 Velenje | 2021/07/06 12:55 | Daniel Dutra Da Silva v Maj Premzl | 6-2,7-5 |
| ITF M25 Wroclaw | 2021/07/01 09:00 | Alessandro Bega v Daniel Dutra Da Silva | 3-6,1-6 |
| ITF M25 Wroclaw | 2021/06/30 12:55 | Carl Soderlund v Daniel Dutra Da Silva | 5-7,3-6 |
| ITF M25 Wroclaw | 2021/06/29 08:00 | Daniel Dutra Da Silva v Timo Stodder | 6-3,6-7,10-3 |
| ITF M25 Wroclaw | 2021/06/28 10:00 | Daniel Dutra Da Silva v Ondrej Horak | 3-6,0-6 |