Round: 44 Ground: Clay
| ITF Portugal F3 | 2016/03/09 14:30 | Guy Den Heijer v Oscar Otte | 3-6,3-6 |
| ITF Portugal F3 Qual | 2016/03/07 19:15 | Alejandro Artunedo v Guy Den Heijer | 3-6,2-6 |
| ITF Portugal F3 Qual | 2016/03/07 10:30 | Guy Den Heijer v Francisco Cabral | 6-2,6-4 |
| ITF Portugal F3 Qual | 2016/03/06 13:00 | Guy Den Heijer v Diogo Lourenco | 6-3,6-2 |
| ITF Portugal F2 Qual | 2016/02/29 15:00 | Jose Fco. Vidal Azorin v Guy Den Heijer | 6-3,3-6,6-2 |
| ITF Portugal F2 Qual | 2016/02/29 10:00 | Guy Den Heijer v Goncalo Falcao | 7-5,7-6 |
| ITF Spain F2 | 2016/02/01 08:30 | Nils Brinkmann v Guy Den Heijer | 6-4,3-6,7-6 |
| ITF Spain F2 | 2016/01/31 09:00 | Jorge L-Perez Fuster v Guy Den Heijer | 4-6,4-6 |
| ITF Austria F8 | 2015/08/15 07:30 | Fabian Gruber v Janos Zibrat | 2-6,2-6 |
| ITF Latvia F1 | 2015/08/03 07:00 | Fabian Gruber v Mikus Losbergs | 1-6,3-6 |
| ITF Austria F4 Qual | 2015/07/11 07:15 | Fabian Gruber v Joy Vigani | 2-6,2-6 |