Stadium: Court 8 Round: 26 Ground: Clay
| ITF M25 Velenje | 2021/07/07 08:00 | Oscar Jose Gutierrez v Constantin Bittoun Kouzmine | 4-6,6-3,6-4 |
| ITF M25 Wroclaw | 2021/07/03 09:00 | Orlando Luz v Oscar Jose Gutierrez | 6-2,6-4 |
| ITF M25 Wroclaw | 2021/07/02 09:00 | Vladyslav Orlov v Oscar Jose Gutierrez | 1-6,1-6 |
| ITF M25 Wroclaw | 2021/07/01 09:00 | Tomas Jirousek v Oscar Jose Gutierrez | 3-6,2-6 |
| ITF M25 Wroclaw | 2021/06/30 09:30 | Maciej Rajski v Oscar Jose Gutierrez | 3-6,4-6 |
| ITF M25 Montauban | 2021/06/25 14:00 | Arthur Cazaux v Oscar Jose Gutierrez | 6-3,6-2 |
| ITF M25 Montauban | 2021/06/24 13:30 | Oscar Jose Gutierrez v Nathan Seateun | 6-2,7-5 |
| ITF M25 Montauban | 2021/06/22 10:00 | Erik Crepaldi v Oscar Jose Gutierrez | 1-6,2-6 |
| ITF M25 Velenje | 2021/07/07 08:00 | Peter Goldsteiner v Gal Emersic Potocnik | 6-1,6-0 |
| ITF M25 Velenje | 2021/07/06 10:10 | Peter Goldsteiner v Tim Heger | 6-1,6-4 |
| ITF M25 Velenje | 2021/07/05 16:20 | Peter Goldsteiner v Roko Horvat | 7-6,6-4 |
| ITF M15 Sarajevo | 2021/05/31 10:00 | Peter Goldsteiner v Petar Jovanovic | 6-7,4-6 |
| ITF M25 Kiseljak | 2021/05/25 12:40 | Zsombor Piros v Peter Goldsteiner | 6-3,7-5 |
| ITF M15 Sibenik | 2021/05/19 12:20 | Peter Goldsteiner v David Pichler | 3-6,2-6 |
| ITF M15 Sibenik | 2021/05/18 09:35 | Elgin Khoeblal v Peter Goldsteiner | 1-6,5-7 |
| ITF M15 Sibenik | 2021/05/17 14:55 | Federico Marchetti v Peter Goldsteiner | 5-7,0-6 |