Stadium: Store 1 Round: 54 Ground: Clay
| ITF M15 Celje | 2023/06/26 11:25 | Gian Marco Ortenzi v Jeremy Schifris | 6-2,6-2 |
| ITF M25 Reggio Emilia | 2023/05/17 10:00 | Gian Marco Ortenzi v Kai Wehnelt | 0-6,2-6 |
| ITF M25 Reggio Emilia | 2023/05/15 15:00 | Gian Marco Ortenzi v Peter Buldorini | 6-7,4-6 |
| ITF M25 Reggio Emilia | 2023/05/15 08:00 | Gian Marco Ortenzi v Enrico Baldisserri | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2023/03/07 09:15 | Joshua Goodger v Gian Marco Ortenzi | 6-3,6-2 |
| ITF M15 Sharm El Sheikh | 2023/03/06 08:00 | Volodymyr Uzhylovskyi v Gian Marco Ortenzi | 4-6,6-7 |
| ITF M15 Sharm El Sheikh | 2023/03/05 10:00 | Pavlo Rezoglazov v Gian Marco Ortenzi | 0-6,2-6 |
| ITF M15 Sharm El Sheikh | 2023/02/27 08:00 | Jakub Kroslak v Gian Marco Ortenzi | 7-5,6-3 |
| ITF M15 Celje | 2023/06/26 11:40 | Mark Wallner v Alexander Klintcharov | 6-2,7-6 |
| ITF M15 Litija | 2023/06/12 07:00 | Corey Gaal v Mark Wallner | 3-6,6-3,12-10 |
| ITF M25 Jablonec Nad Nisou | 2023/05/29 08:00 | Luca Wiedenmann v Mark Wallner | 6-4,6-3 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 08:00 | Mark Wallner v Maurus Malgiaritta | 6-1,6-0 |
| ITF M15 Warmbad-Villach | 2023/05/21 10:00 | Jakob Schnaitter v Mark Wallner | 6-3,6-0 |
| ITF M25 Prague | 2023/05/18 09:00 | Mark Wallner v Patrik Rikl | 2-6,2-6 |
| ITF M25 Prague | 2023/05/16 08:00 | Mark Wallner v Lukas Velik | 6-2,6-3 |
| ITF M25 Prague | 2023/05/15 11:00 | Mark Wallner v Eduard Silviu Schipor | 6-0,6-0 |