Stadium: Center Court Round: 46 Ground: Clay
| Challenger Heilbronn Qual | 2018/05/12 09:00 | Dmitry Surchenko v Christoph Negritu | 5-7,1-6 |
| ITF Tunisia F15 | 2018/04/17 11:10 | Christoph Negritu v Samm Butler | 3-6,3-6 |
| ITF Tunisia F14 | 2018/04/13 09:00 | Christoph Negritu v Baptiste Crepatte | 2-6,3-6 |
| ITF Tunisia F14 | 2018/04/12 09:00 | Christoph Negritu v Quentin Robert | 5-7,6-3,6-2 |
| ITF Tunisia F14 | 2018/04/10 09:00 | Michal Konecny v Christoph Negritu | 4-6,4-6 |
| ITF Tunisia F13 | 2018/04/07 09:00 | David Perez Sanz v Christoph Negritu | 6-4,6-2 |
| ITF Tunisia F13 | 2018/04/06 10:50 | Christoph Negritu v Clement Tabur | 7-6,6-3 |
| ITF Tunisia F13 | 2018/04/05 09:00 | Samm Butler v Christoph Negritu | 6-3,6-7,4-6 |
| Challenger Glasgow | 2018/05/03 09:30 | Igor Sijsling v Roberto Ortega-Olmedo | 6-1,6-7,6-7 |
| Challenger Glasgow | 2018/05/01 09:30 | Bernabe Zapata Miralles v Igor Sijsling | 1-6,3-6 |
| ITF Portugal F8 | 2018/04/17 10:00 | Germain Gigounon v Igor Sijsling | 6-4,6-2 |
| ITF Portugal F7 | 2018/04/12 17:40 | Germain Gigounon v Igor Sijsling | 6-4,6-3 |
| ITF Portugal F7 | 2018/04/12 11:00 | Igor Sijsling v Joao Monteiro | 6-2,6-1 |
| Challenger St Brieuc Qual | 2018/03/26 11:05 | Constant Lestienne v Igor Sijsling | 6-2,5-7,7-6 |
| Challenger St Brieuc Qual | 2018/03/25 11:55 | Igor Sijsling v Zizou Bergs | 7-5,7-5 |
| Challenger St Brieuc Qual | 2018/03/24 17:05 | Igor Sijsling v Pierre Faivre | 6-4,6-2 |