Round: 44 Ground: Clay
| ITF Germany F5 | 2016/06/26 09:00 | Tim Van Der Horst v Johann Willems | 2-6,1-6 |
| ITF Germany F2 Qual | 2016/01/17 12:00 | Dominik Boehler v Johann Willems | 6-4,7-6 |
| ITF Turkey F41 | 2015/10/14 07:00 | Bogdan Bobrov v Johann Willems | 7-6,6-1 |
| ITF Turkey F41 | 2015/10/12 07:00 | Muhammet Haylaz v Johann Willems | 3-6,6-4,6-1 |
| ITF Turkey F36 | 2015/10/04 12:00 | Patrik Nema v Johann Willems | 6-3,6-4 |
| ITF Netherlands F6 | 2015/08/25 13:50 | Guy Den Heijer v Johann Willems | 2-6,7-6,6-2 |
| ITF Netherlands F6 | 2015/08/23 12:10 | Vincent Van Den Honert v Johann Willems | 3-6,1-6 |
| ITF Netherlands F6 | 2015/08/22 08:00 | Mats Hermans v Johann Willems | 1-6,4-6 |