| ITF Spain F29 Qual | 2017/09/09 08:00 | Kaptan Kaster v Harry Lim | 6-7,3-6 |
| ITF Belgium F12 Qual | 2017/09/03 15:00 | Hunter Johnson v Kaptan Kaster | 6-1,6-2 |
| ITF Belgium F11 | 2017/08/26 10:30 | Mousa Shanan Zayed v Kaptan Kaster | 6-3,6-4 |
| ITF Belgium F10 Qual | 2017/08/20 10:40 | Kaptan Kaster v Harry Lim | 2-6,3-6 |
| ITF Belgium F10 Qual | 2017/08/19 08:00 | James Ledger v Kaptan Kaster | 2-6,6-3,6-7 |
| ITF USA F23 Qual | 2017/07/02 15:00 | Yates Johnson v Kaptan Kaster | 6-4,6-1 |
| ITF USA F11 Qual | 2017/03/18 16:00 | Tanner K Smith v Kaptan Kaster | 6-1,6-2 |
| ITF USA F10 Qual | 2017/03/11 22:00 | Kaptan Kaster v David Fox | 3-6,3-6 |
| ITF Portugal F13 | 2017/07/22 09:00 | Enric Guaita-Pais v Henrique Brancal | 7-5,6-2 |
| ITF Portugal F12 | 2017/07/15 12:00 | Henrique Brancal v Andre Rodeia | 1-6,3-6 |