Stadium: Court 4 Round: 27 Ground: Clay
| ITF Tunisia F20 | 2018/05/24 10:50 | Pauwels, Maxime v Rotsaert, Alexandre | 4-6,6-0,2-6 |
| ITF Tunisia F20 | 2018/05/23 09:00 | Day, Alexander v Rotsaert, Alexandre | 3-6,0-6 |
| Tunisia F19, Singles Qualifying | 2018/05/16 11:50 | Vivero Gonzalez, Pablo v Rotsaert, Alexandre | 6-1,6-1 |
| Tunisia F19, Singles Qualifying | 2018/05/13 09:00 | Rotsaert, Alexandre v Harwood, Edward | 6-2,6-2 |
| Challenger Savannah Qual | 2018/04/28 16:25 | Federico Coria v Rotsaert, Alexandre | 6-2,4-6,6-1 |
| ITF USA F12 | 2018/04/25 16:00 | Nick Hardt v Rotsaert, Alexandre | 6-1,6-1 |
| ITF USA F11 | 2018/04/19 14:00 | Rotsaert, Alexandre v Alejandro Tabilo | 7-5,3-6,2-6 |
| ITF USA F11 | 2018/04/18 14:00 | Smith, Raleigh v Rotsaert, Alexandre | 1-6,3-6 |
| ITF Tunisia F20 | 2018/05/24 09:00 | Aziz Ouakaa v Seifert, Stefan | 3-6,4-6 |
| ITF Tunisia F20 | 2018/05/22 09:00 | Klegou, Alexis v Seifert, Stefan | 0-6,1-6 |
| ITF Bulgaria F1 | 2018/05/17 07:00 | Gabriel Donev v Seifert, Stefan | 6-4,6-1 |
| ITF Bulgaria F1 | 2018/05/15 08:25 | Penev, Ivan v Seifert, Stefan | 4-6,2-6 |
| ITF Greece F5 | 2018/03/28 06:00 | Petr Michnev v Seifert, Stefan | 7-6,7-6 |
| ITF Greece F4 | 2018/03/25 09:00 | Seifert, Stefan v Tomas Barrios Vera | 6-7,6-2,6-2 |
| ITF Greece F4 | 2018/03/24 08:50 | Rudolf Molleker v Seifert, Stefan | 0-6,2-6 |
| ITF Greece F4 | 2018/03/23 12:00 | Sude, Jakob v Seifert, Stefan | 4-6,6-7 |