Stadium: Court 11 Round: 46
| Challenger Braunschweig Qual | 2018/07/07 09:55 | Stefan Seifert v Alejo Vilaro | 6-1,3-6,6-3 |
| ITF Israel F11 | 2018/06/29 07:00 | Jordan Hasson v Stefan Seifert | 6-4,6-3 |
| ITF Israel F11 | 2018/06/28 07:00 | Shahar Elbaz v Stefan Seifert | 6-7,6-3,4-6 |
| ITF Israel F11 | 2018/06/27 08:05 | Nir Vodavoz v Stefan Seifert | 5-7,0-6 |
| ITF Tunisia F21 | 2018/06/01 09:00 | Gabriel Petit v Stefan Seifert | 6-0,6-1 |
| ITF Tunisia F21 | 2018/05/31 10:55 | Constantin Bittoun Kouzmine v Stefan Seifert | 3-6,3-6 |
| ITF Tunisia F21 | 2018/05/29 11:10 | Stefan Seifert v Anis Ghorbel | 3-6,6-4,6-4 |
| ITF Tunisia F20 | 2018/05/26 09:00 | Moez Echargui v Stefan Seifert | 6-4,6-0 |
| Challenger Marburg Qual | 2018/06/30 13:20 | Ronald Slobodchikov v Jan Satral | 7-6,6-3 |
| Challenger Poprad Tatry | 2018/06/19 08:00 | Tsung-Hua Yang v Jan Satral | 6-4,6-2 |
| Challenger Poprad Tatry Qual | 2018/06/17 10:00 | Jan Satral v Artem Smirnov | 5-7,7-5,6-4 |
| Challenger Poprad Tatry Qual | 2018/06/16 13:10 | Jan Satral v Michal Konecny | 6-3,7-6 |
| Challenger Poprad Tatry Qual | 2018/06/16 09:35 | Jan Satral v Marek Gengel | 6-1,6-1 |
| Challenger - Prostejov | 2018/06/05 12:10 | Jan Satral v Elias Ymer | 5-7,6-4,5-7 |
| Challenger Prostejov Qual | 2018/06/04 10:00 | Tomas Liska v Jan Satral | 6-2,0-6,3-6 |
| Challenger Prostejov Qual | 2018/06/03 15:25 | Marc Sieber v Jan Satral | 6-4,3-6,4-6 |