Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF Tunisia F30 | 2018/09/05 09:00 | Christoph Negritu v Borroni, Andrea | 6-4,6-2 |
| ITF Germany F13 | 2018/08/24 15:20 | Christoph Negritu v Torebko, Peter | 3-6,1-6 |
| ITF Germany F13 | 2018/08/23 13:15 | Lenz, Julian v Christoph Negritu | 6-7,0-6 |
| ITF Germany F13 | 2018/08/22 08:00 | Anton Chekhov v Christoph Negritu | 4-6,7-6,2-6 |
| ITF Netherlands F4 | 2018/08/16 12:35 | Max Houkes v Christoph Negritu | 6-3,4-6,6-2 |
| ITF Netherlands F4 | 2018/08/15 09:40 | Saffratti, Marco v Christoph Negritu | 1-6,1-6 |
| ITF Germany F11 | 2018/08/10 12:00 | Jan Choinski v Christoph Negritu | 6-4,6-3 |
| ITF Germany F11 | 2018/08/09 10:15 | Mats Rosenkranz v Christoph Negritu | 3-6,2-6 |
| ITF Tunisia F30 | 2018/09/04 15:25 | Garcia, Mathieu v Portales, Nino | 1-6,4-6 |
| ITF Serbia F3 | 2018/08/18 07:00 | Portales, Nino v Markovic, Luka | 4-6,3-6 |
| ITF Serbia F2 | 2018/08/15 10:00 | Portales, Nino v Ergi Kirkin | 3-6,2-6 |
| ITF Latvia F1 | 2018/08/01 11:50 | Slobodchikov, Ronald v Portales, Nino | 6-2,6-0 |
| ITF Latvia F1 | 2018/07/30 07:10 | Portales, Nino v Terczynski, Mateusz | 6-3,0-6,6-4 |
| ITF Latvia F1 | 2018/07/29 07:00 | Portales, Nino v Procopio, Alessandro | 7-5,6-2 |
| ITF Latvia F1 | 2018/07/28 09:30 | Portales, Nino v Juksa, Deivids | 4-6,6-4,7-6 |
| ITF Lithuania F1 | 2018/07/22 08:00 | Portales, Nino v Stevens, Bart | 2-6,1-6 |