Stadium: Court 10 Round: 26 Ground: Clay
| ITF M15 Zilina | 2021/09/01 12:25 | Gonzalo Villanueva v Peter Goldsteiner | 4-6,3-6 |
| ITF M15 Parnu | 2021/08/05 07:00 | Peter Goldsteiner v Simone Roncalli | 5-7,0-6 |
| ITF M15 Parnu | 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 M25 Telfs | 2021/07/13 07:30 | Peter Goldsteiner v Philip Bachmaier | 6-0,3-6,4-10 |
| ITF M15 Zilina | 2021/09/01 10:55 | Lukas H Lilleengen v Dominik Kellovsky | 6-4,1-6,7-6 |
| ITF M15 Zilina | 2021/08/31 07:30 | Lukas H Lilleengen v Janos Fekete | 6-1,6-1 |
| ITF M15 Bratislava | 2021/08/26 09:15 | Lukas H Lilleengen v Pavel Nejedly | 2-6,3-6 |
| ITF M15 Bratislava | 2021/08/25 10:05 | Eero Vasa v Lukas H Lilleengen | 5-7,7-6,5-7 |
| ITF M15 Bratislava | 2021/08/24 08:00 | Antonin Stepanek v Lukas H Lilleengen | 6-0,4-6,3-10 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Patrik Jancovic v Lukas H Lilleengen | 0-6,2-6 |
| ITF M15 Bratislava | 2021/08/17 08:00 | Zsombor Velcz v Lukas H Lilleengen | 7-5,6-2 |
| ITF M15 Bratislava | 2021/08/16 12:00 | Isa Mammetgulyyev v Lukas H Lilleengen | 3-6,1-6 |