Round: 62 Ground: Clay
| ITF Turkey F47 | 2015/11/07 06:00 | Guy Den Heijer v Guus Koevermans | 6-1,6-3 |
| ITF Turkey F47 | 2015/11/14 07:00 | Grigoriy Korobeynikov v Guus Koevermans | 1-6,1-6 |
| ITF Turkey F47 | 2015/11/07 06:00 | Guy Den Heijer v Guus Koevermans | 6-1,6-3 |
| ITF Turkey F44 | 2015/11/01 08:00 | Dominic Weidinger v Guus Koevermans | 7-5,6-1 |
| ITF Germany F16 | 2015/10/12 11:00 | Christian Hirschmueller v Guus Koevermans | 6-3,6-3 |
| ITF Belgium F14 | 2015/09/05 09:00 | Guus Koevermans v Marc Dijkhuizen | 3-6,4-6 |
| ITF Netherlands F6 | 2015/08/22 08:00 | Colin Van Beem v Guus Koevermans | 7-5,6-1 |
| ITF Netherlands F1 Qual | 2015/06/13 11:30 | Guus Koevermans v Alexandre G R Girotto | 6-2,6-1 |
| ITF Spain F6 Qual | 2015/03/22 09:00 | Juan P Canas Garcia v Guus Koevermans | 6-4,6-2 |
| ITF Turkey F47 | 2015/11/14 07:00 | Guy Den Heijer v Bogdan Borza | 6-7,3-6 |
| ITF Turkey F47 | 2015/11/08 07:00 | Alberto Cammarata v Guy Den Heijer | 6-4,2-6,7-5 |
| ITF Turkey F47 | 2015/11/07 06:00 | Guy Den Heijer v Guus Koevermans | 6-1,6-3 |
| ITF Netherlands F6 | 2015/08/28 08:00 | Guy Den Heijer v Jesse Huta Galung | 3-6,1-6 |
| ITF Netherlands F6 | 2015/08/25 13:50 | Guy Den Heijer v Johann Willems | 2-6,7-6,6-2 |
| ITF Netherlands F4 | 2015/07/04 08:00 | Oliver Anderson v Guy Den Heijer | 6-2,7-5 |
| ITF Netherlands F2 Qual | 2015/06/23 10:00 | Bobbie De Goeijen v Guy Den Heijer | 6-4,3-6,7-5 |
| ITF Netherlands F2 Qual | 2015/06/21 09:15 | Guy Den Heijer v Roy Sarut De Valk | 7-6,7-5 |