Stadium: Court 3 Round: 25 Ground: Clay
| ITF Turkey F13 | 2018/04/01 08:30 | Ken Onishi v Gilbert S K Junior | 3-6,6-7 |
| ITF Turkey F13 | 2018/03/31 08:30 | Ken Onishi v Phongsapak Kerdlaphee | 6-4,6-2 |
| ITF Tunisia F9 | 2018/03/07 11:05 | Ken Onishi v Thomas Brechemier | 6-4,6-7,6-7 |
| ITF Tunisia F8 | 2018/02/28 11:20 | Anis Ghorbel v Ken Onishi | 6-4,1-6,6-2 |
| ITF Tunisia F7 | 2018/02/22 08:30 | Ken Onishi v Johan Sebastien Tatlot | 4-6,3-6 |
| ITF Tunisia F7 | 2018/02/20 09:00 | Ken Onishi v Mousheg Hovhannisyan | 4-6,7-6,6-0 |
| Challenger Launceston Qual | 2018/02/04 00:25 | Marinko Matosevic v Ken Onishi | 6-4,6-0 |
| Challenger Launceston Qual | 2018/02/03 04:20 | Ken Onishi v Shinta Fujii | 6-0,4-6,6-3 |
| Challenger Aix en Provence Qual | 2018/05/05 12:30 | Fran Zvonimir Zgombic v Yann Marti | 4-6,2-6 |
| ITF France F9 Qual | 2018/05/01 15:40 | Jonathan Kanar v Fran Zvonimir Zgombic | 7-6,7-5 |
| ITF France F7 | 2018/04/18 09:00 | Tak Khunn Wang v Fran Zvonimir Zgombic | 6-1,6-2 |
| ITF France F7 | 2018/04/16 10:10 | Benjamin Pietri v Fran Zvonimir Zgombic | 7-6,6-7,4-6 |
| ITF Tunisia F13 | 2018/04/06 11:00 | Jonathan Kanar v Fran Zvonimir Zgombic | 6-3,6-2 |
| ITF Tunisia F13 | 2018/04/05 09:00 | Fran Zvonimir Zgombic v Maxime Tchoutakian | 6-3,4-6,7-5 |
| ITF Tunisia F13 | 2018/04/03 09:00 | Fran Zvonimir Zgombic v Charles Bertimon | 6-2,6-0 |
| ITF Greece F4 | 2018/03/20 10:20 | Markos Kalovelonis v Fran Zvonimir Zgombic | 6-4,6-4 |