Stadium: Court 3 Round: 27 Ground: Clay
| ITF Belgium F1 | 2018/06/21 09:00 | 이고신, 알렉산더 v 마르티, 얀 | 2-6,1-6 |
| ITF Belgium F1 | 2018/06/19 09:35 | 데 존지, 다니엘 v 마르티, 얀 | 2-6,6-2,1-6 |
| ITF Belgium F1 Qual | 2018/06/18 10:20 | 마르티, 얀 v Brees, Thomas | 6-1,6-3 |
| ITF Belgium F1 Qual | 2018/06/17 11:00 | 마르티, 얀 v 오존, 이안 | 6-1,6-1 |
| Challenger Aix en Provence Qual | 2018/05/05 12:30 | Zgombic, Fran Zvonimir v 마르티, 얀 | 4-6,2-6 |
| ITF France F7 Qual | 2018/04/18 10:50 | 마르티, 얀 v Jankovits, Yannick | 1-6,6-2,3-6 |
| ITF France F7 | 2018/04/16 13:45 | Marie, Jules v 마르티, 얀 | 5-7,1-6 |
| ITF France F7 Qual | 2018/04/15 15:05 | 마르티, 얀 v Bourcet, Tony | 6-2,6-2 |
| ITF Belgium F1 | 2018/06/21 15:05 | 카우티엘, 알렉시스 v Merckx, Jonas | 4-6,3-6 |
| ITF Belgium F1 | 2018/06/19 09:55 | Herman, Louis v Merckx, Jonas | 3-6,0-6 |
| ITF Ukraine F3 | 2018/05/24 07:00 | Kolisnyk, Olexiy v Merckx, Jonas | 6-1,6-4 |
| ITF Ukraine F3 | 2018/05/23 09:25 | 미야코브, 드미트리 v Merckx, Jonas | 1-6,3-6 |
| ITF Ukraine F3 | 2018/05/22 15:25 | 말라코브, 볼로디밀 v Merckx, Jonas | 1-6,1-6 |
| ITF Ukraine F2 | 2018/05/19 07:00 | 돌고세예브, 올레그 v Merckx, Jonas | 4-6,2-6 |
| ITF Ukraine F2 | 2018/05/18 09:30 | Merckx, Jonas v Kolisnyk, Olexiy | 6-3,6-3 |
| ITF Ukraine F2 | 2018/05/17 07:05 | 포르투나, 클라우디오 v Merckx, Jonas | 3-6,2-6 |