| ITF Germany F5 | 2016/06/29 10:00 | 제벤스, 헨드리크 v Willems, Johann | 5-7,7-5,6-1 |
| ITF Germany F5 | 2016/06/26 09:00 | 반 델 호스트, 팀 v Willems, Johann | 2-6,1-6 |
| ITF Germany F2 Qual | 2016/01/17 12:00 | 보엘러, 도미니크 v Willems, Johann | 6-4,7-6 |
| ITF Turkey F41 | 2015/10/14 07:00 | 보브로브, 보그단 v Willems, Johann | 7-6,6-1 |
| ITF Turkey F41 | 2015/10/12 07:00 | Haylaz, Muhammet v Willems, Johann | 3-6,6-4,6-1 |
| ITF Turkey F36 | 2015/10/04 12:00 | 네마, 파트리크 v Willems, Johann | 6-3,6-4 |
| ITF Netherlands F6 | 2015/08/25 13:50 | 덴 헤이젤, 구이 v Willems, Johann | 2-6,7-6,6-2 |
| ITF Netherlands F6 | 2015/08/23 12:10 | van Den Honert, Vincent v Willems, Johann | 3-6,1-6 |