Stadium: Court 21 Round: 25 Ground: Hardcourt outdoor
| 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 M25 Velenje | 2021/07/09 09:00 | Peter Goldsteiner v Gonzalo Lama | 2-6,4-6 |