Stadium: Court 6 Round: 62 Ground: Hardcourt outdoor
| Challenger Iasi | 2023/07/09 07:30 | Matei Cristian Onofrei v Juan Bautista Otegui | 2-6,1-6 |
| ITF M25 Brasov | 2023/07/03 10:25 | Dragos N Cazacu v Matei Cristian Onofrei | 7-5,5-7,6-3 |
| ITF M15 Cluj Napoca | 2023/06/19 12:55 | Matei Cristian Onofrei v Simone Roncalli | 2-6,5-7 |
| ITF M25 Grasse | 2023/06/11 09:15 | Matthieu Bolot v Matei Cristian Onofrei | 6-1,6-0 |
| ITF M15 Constanta | 2023/05/28 06:00 | Thiago Cigarran v Matei Cristian Onofrei | 6-1,7-6 |
| ITF M15 Bucharest | 2023/05/22 09:00 | Matei Cristian Onofrei v Lior Goldenberg | 4-6,1-6 |
| ITF M25 Bacau | 2022/07/25 07:00 | Radu Mihai Papoe v Matei Cristian Onofrei | 6-3,6-0 |
| ITF M25 Bacau | 2022/07/24 09:00 | Matei Cristian Onofrei v David Gabor | 6-3,6-1 |
| ITF M15 Celje | 2023/06/27 07:00 | Gian Marco Ortenzi v Mark Wallner | 6-4,6-4 |
| 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 |