Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF Qatar F4 | 2018/12/02 14:55 | Schmitz, Constantin v Lavaud, Eric | 6-1,6-0 |
| ITF Germany F15 | 2018/10/09 11:00 | Binding, Jonathan v Schmitz, Constantin | 3-6,6-3,6-1 |
| ITF Germany F14 | 2018/10/05 11:45 | Cayre, Paul v Schmitz, Constantin | 6-3,6-2 |
| ITF Germany F14 | 2018/10/04 13:15 | Sandro Kopp v Schmitz, Constantin | 2-6,2-6 |
| ITF Germany F14 | 2018/10/03 11:40 | Schmitz, Constantin v Filip Duda | 6-4,6-2 |
| ITF Great Britain F4 | 2018/09/14 13:55 | Schmitz, Constantin v Jack Draper | 2-6,1-6 |
| ITF Great Britain F4 | 2018/09/13 10:15 | Schmitz, Constantin v Aswat, Imran | 4-6,7-5,6-4 |
| ITF Great Britain F4 | 2018/09/12 10:00 | Finn Bass v Schmitz, Constantin | 2-6,6-7 |
| ITF Qatar F4 | 2018/12/02 15:50 | Alazmeh, Taym v Niklas Schell | 0-6,0-6 |
| ITF Tunisia F41 | 2018/11/20 09:00 | Niklas Schell v Aslan Karatsev | 4-6,2-6 |
| ITF Tunisia F39 | 2018/11/06 10:00 | Marco Miceli v Niklas Schell | 6-4,3-6,6-4 |
| ITF Tunisia F38 | 2018/10/31 08:45 | Geoffrey Blancaneaux v Niklas Schell | 6-1,6-2 |
| ITF Germany F15 | 2018/10/09 09:00 | Henri Squire v Niklas Schell | 6-7,6-2,6-2 |
| France F19, Singles | 2018/09/27 11:00 | Niklas Schell v Michael Geerts | 4-6,2-6 |
| France F19, Singles | 2018/09/25 13:30 | Niklas Schell v Pierre Delage | 6-2,6-2 |
| ITF Portugal F17 | 2018/09/21 11:30 | Niklas Schell v Cacao, Tiago | 3-6,4-6 |