Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Kursumlijska Banja | 2023/05/24 13:20 | Boris Butulija v Joao Victor C Loureiro | 7-6,6-4 |
| Challenger Coquimbo | 2023/05/01 14:00 | Ignacio Monzon v Joao Victor C Loureiro | 2-6,7-6,6-4 |
| Challenger Coquimbo | 2023/04/30 15:25 | Diego Ortiz Gamonal v Joao Victor C Loureiro | 2-6,1-6 |
| ITF M15 Mogi das Cruzes | 2023/04/28 14:25 | Orlando Luz v Joao Victor C Loureiro | 7-6,7-6 |
| ITF M15 Mogi das Cruzes | 2023/04/27 14:50 | Felipe De Dios v Joao Victor C Loureiro | 4-6,2-6 |
| ITF M15 Mogi das Cruzes | 2023/04/25 15:30 | Pedro Rodrigues v Joao Victor C Loureiro | 6-3,3-6,6-7 |
| Challenger Florianopolis | 2023/04/16 16:35 | Joao Victor C Loureiro v Ignacio Carou | 6-7,5-7 |
| ITF M15 De Los Tsachilas | 2023/04/13 20:40 | Joao Victor C Loureiro v Tobias Franco | 2-6,4-6 |
| ITF M15 Pazardzhik | 2023/05/24 14:00 | Leonardo Rossi v Olaf Pieczkowski | 7-6,7-6 |
| ITF M15 Monastir | 2023/03/22 08:30 | Olaf Pieczkowski v Buvaysar Gadamauri | 2-6,6-3,2-6 |
| ITF M15 Monastir | 2023/03/19 08:30 | Olaf Pieczkowski v Lorenzo Rottoli | 6-7,3-6 |
| ITF M15 Monastir | 2023/03/18 10:15 | Simone Roncalli v Olaf Pieczkowski | 2-6,2-6 |
| ITF M15 Monastir | 2023/03/17 11:00 | Olaf Pieczkowski v Szymon Kielan | 6-1,6-1 |
| ITF M15 Monastir | 2023/03/16 08:30 | Olaf Pieczkowski v Luigi Sorrentino | 6-3,6-4 |
| ITF M15 Monastir | 2023/03/14 11:40 | Alexis Boureau v Olaf Pieczkowski | 2-6,1-6 |
| ITF M15 Monastir | 2023/03/07 10:30 | Olaf Pieczkowski v Stefano Napolitano | 4-6,3-6 |