Stadium: Centre Court Round: 45
| Challenger Heilbronn | 2018/05/17 11:00 | Igor Sijsling v Jiri Vesely | 3-6,6-4,2-6 |
| Challenger Heilbronn Qual | 2018/05/14 11:00 | Miliaan Niesten v Igor Sijsling | 3-6,2-6 |
| Challenger Heilbronn Qual | 2018/05/13 09:00 | Christoph Negritu v Igor Sijsling | 4-6,0-6 |
| 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 Francavilla Qual | 2018/04/21 15:10 | Kevin Krawietz v Julian Ocleppo | 7-5,6-2 |
| Challenger Tunis Qual | 2018/04/14 11:55 | Alexandre Muller v Julian Ocleppo | 7-6,6-4 |
| ITF Egypt F5 | 2018/02/14 09:20 | Tom Jomby v Julian Ocleppo | 3-6,6-1,7-6 |
| ITF Egypt F4 | 2018/02/07 12:10 | Julian Ocleppo v Marek Gengel | 5-7,2-6 |
| ITF Tunisia F2 | 2018/01/17 12:30 | Jeremy Jahn v Julian Ocleppo | 6-4,6-0 |
| ITF Tunisia F1 | 2018/01/09 12:15 | Julian Ocleppo v Nicolas Alvarez Varona | 5-7,6-7 |
| ITF Qatar F5 | 2017/12/12 16:45 | Julian Ocleppo v Tom Farquharson | 3-6,1-6 |
| ITF Qatar F5 Qual | 2017/12/11 14:00 | Julian Ocleppo v Andrew Watson | 6-2,6-3 |