Stadium: Court 1 Round: 25 Ground: Clay
| ITF Latvia F1 | 2018/07/29 07:00 | Nino Portales v Alessandro Procopio | 7-5,6-2 |
| ITF Latvia F1 | 2018/07/28 09:30 | Nino Portales v Deivids Juksa | 4-6,6-4,7-6 |
| ITF Lithuania F1 | 2018/07/22 08:00 | Nino Portales v Bart Stevens | 2-6,1-6 |
| ITF Lithuania F1 | 2018/07/21 13:00 | Nino Portales v Artur Kulibaba | 6-4,7-6 |
| ITF Lithuania F1 | 2018/07/21 10:00 | Nino Portales v Artsiom Cherkasau | 6-2,6-1 |
| ITF France F13 | 2018/07/10 08:30 | Nino Portales v Sora Fukuda | 0-6,4-6 |
| ITF France F13 Qual | 2018/07/08 07:30 | Nino Portales v Batiste Klein | 6-3,6-0 |
| ITF France F13 Qual | 2018/07/07 10:30 | Lucas Bouquet v Nino Portales | 3-6,6-1,1-6 |
| ITF Lithuania F1 | 2018/07/25 11:30 | Christoffer Solberg v Mateusz Terczynski | 6-3,5-7,7-5 |
| ITF Lithuania F1 | 2018/07/23 08:10 | Mateusz Terczynski v Julius Tverijonas | 5-7,7-5,7-6 |
| ITF Germany F6 | 2018/07/03 10:30 | Vasile Antonescu v Mateusz Terczynski | 6-7,6-4,6-2 |
| ITF Germany F5 | 2018/06/25 13:00 | Mateusz Terczynski v Tim Ruehl | 6-2,2-6,3-6 |
| ITF Germany F5 | 2018/06/25 08:00 | Mateusz Terczynski v Nikola Slavic | 6-1,7-6 |
| Challenger Surbiton Qual | 2018/06/02 13:25 | Luke Bambridge v Mateusz Terczynski | 6-3,6-4 |
| ITF Czech Republic F3 | 2018/05/31 08:30 | Patrik Rikl v Mateusz Terczynski | 3-6,6-2,6-2 |
| ITF Czech Republic F3 | 2018/05/29 12:15 | Szymon Walkow v Mateusz Terczynski | 4-6,4-6 |