Stadium: Court 1 Round: 27 Ground: Clay
| ITF M15 - Žilina | 2021/09/02 08:00 | Peter Goldsteiner v Lukas H Lilleengen | 6-7,6-0,6-2 |
| ITF M15 - Žilina | 2021/09/01 12:25 | Gonzalo Villanueva v Peter Goldsteiner | 4-6,3-6 |
| ITF M15 - Pärnu | 2021/08/05 07:00 | Peter Goldsteiner v Simone Roncalli | 5-7,0-6 |
| ITF M15 - Pärnu | 2021/08/04 07:00 | Peter Goldsteiner v Alexander Georg Mandma | 7-5,6-0 |
| ITF M25 - Kottingbrunn | 2021/07/21 11:40 | Peter Goldsteiner v Zsombor Piros | 4-6,1-6 |
| ITF M25 - Kottingbrunn | 2021/07/20 10:40 | Peter Goldsteiner v Francisco Vittar | 6-3,6-1 |
| ITF M25 - Kottingbrunn | 2021/07/19 12:25 | Peter Goldsteiner v Martin Zeljenka | 6-4,7-6 |
| ITF M25 - Kottingbrunn | 2021/07/18 07:30 | Peter Goldsteiner v Ondrej Valek | 6-2,6-2 |
| ITF M15 - Žilina | 2021/09/02 08:00 | Francesco Vilardo v Bastian Malla | 1-6,1-6 |
| ITF M15 - Žilina | 2021/09/01 08:00 | Lukas Palovic v Bastian Malla | 2-6,6-7 |
| ITF M15 - Bratislava | 2021/08/19 10:55 | Bastian Malla v Tomas Liska | 4-6,6-4,2-6 |
| ITF M15 - Bratislava | 2021/08/18 08:00 | Bastian Malla v Zsombor Velcz | 6-2,6-2 |
| ITF M15 - Curtea de Argeș | 2021/08/11 10:55 | Bastian Malla v Francisco Comesana | 6-7,1-6 |
| ITF M15 - Novi Sad | 2021/08/05 12:00 | Pedro Boscardin Dias v Bastian Malla | 2-6,6-3,6-3 |
| ITF M15 - Novi Sad | 2021/08/04 12:05 | Aziz Kijametovic v Bastian Malla | 6-7,4-6 |
| ITF M15 - Skopje | 2021/06/02 12:05 | Stefano Battaglino v Bastian Malla | 1-6,3-6 |