Stadium: Court 12 Round: 62 Ground: Clay
| ITF - M15 Platja d'Aro | 2021/10/10 11:00 | Hans Albert Schubert v Jordi Mas De Ugarte | 2-6,6-4,18-20 |
| ITF - M25 Sintra | 2021/09/14 13:15 | Diego F Flores v Hans Albert Schubert | 6-2,6-3 |
| ITF - M25 Sintra | 2021/09/13 11:55 | Hans Albert Schubert v Nicolas Affolter | 7-6,6-2 |
| ITF - M25 Sintra | 2021/09/06 08:30 | Hans Albert Schubert v Jesse Flores | 4-6,2-6 |
| ITF - M25 Gandia | 2021/07/18 07:00 | Denis Klok v Hans Albert Schubert | 6-3,6-2 |
| ITF - M25 Vic | 2021/05/16 08:00 | Hans Albert Schubert v Abedallah Shelbayh | 1-6,5-7 |
| ITF - M15 Sharm El Sheikh | 2021/04/04 12:30 | Daniel Cox v Hans Albert Schubert | 6-1,6-2 |
| ITF - M15 Sharm El Sheikh | 2021/03/28 09:30 | Hans Albert Schubert v Yaron Guberman | 1-6,5-7 |
| ITF - M15 Girona | 2021/10/17 10:30 | Zhenxiong Dong v Nicolas Parizzia | 5-7,1-6 |
| ITF - M25 Budapesta | 2021/09/30 09:00 | Nicolas Parizzia v Filip Duda | 2-6,4-6 |
| ITF - M25 Budapesta | 2021/09/28 08:55 | Eric Morris v Nicolas Parizzia | 4-6,4-6 |
| ITF - M25 Budapesta | 2021/09/27 10:15 | Nicolas Parizzia v Danylo Veremeychuk | 6-4,6-7,10-6 |
| ITF - M25 Budapesta | 2021/09/26 08:00 | Nicolas Parizzia v Radovan Michalik | 6-1,7-5 |
| ITF - M15 Pirot | 2021/09/23 08:00 | Nicolas Parizzia v Federico Iannaccone | 4-6,2-6 |
| ITF - M15 Pirot | 2021/09/21 12:00 | Nicolas Parizzia v Goran Zivotic | 4-6,6-4,9-11 |
| ITF - M15 Pirot | 2021/09/20 08:00 | Nicolas Parizzia v Sabit Suntic | 6-4,6-2 |