Stadium: Court 9 Round: 54 Ground: Clay
| 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 |
| ITF M15 Frederiksberg | 2021/08/04 09:25 | Ryan Nijboer v Leyton Rivera | 6-4,6-2 |
| ITF M15 Frederiksberg | 2021/08/02 11:05 | Nazim Makhlouf v Leyton Rivera | 3-6,6-3,3-10 |
| ITF M15 Frederiksberg | 2021/08/01 10:00 | Eirik Groener v Leyton Rivera | 2-6,5-7 |
| ITF M15 Poprad | 2021/07/05 08:00 | Dominik Palan v Leyton Rivera | 6-3,6-2 |
| ITF M15 Poprad | 2021/07/04 11:00 | Samo Polakovic v Leyton Rivera | 4-6,6-0,4-10 |
| ITF M15 Skopje | 2021/06/07 13:00 | Toby Martin v Leyton Rivera | 7-6,5-7,11-9 |
| ITF M15 Novomoskovsk | 2021/05/31 10:00 | Leyton Rivera v Dzianis Zharyn | 6-7,2-6 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Leyton Rivera v Illya Maksymchuk | 6-1,6-3 |