Round: 62 Ground: Clay
| ITF Spain F30 Qual | 2017/09/17 12:30 | Guillermo Olaso v Hugo Moura | 6-1,6-0 |
| Challenger Alphen Qual | 2017/09/03 12:30 | Julien Cagnina v Guillermo Olaso | 3-6,6-1,6-3 |
| Challenger Alphen Qual | 2017/09/03 09:00 | Tomasz Bednarek v Guillermo Olaso | 0-6,0-6 |
| ITF Turkey F27 | 2017/07/30 08:00 | Martin Cuevas v Guillermo Olaso | 4-6,6-3,4-6 |
| ITF Turkey F27 | 2017/07/28 08:00 | Guillermo Olaso v Cristian Carli | 6-2,6-2 |
| ITF Turkey F27 | 2017/07/27 07:00 | Guillermo Olaso v Ioannis Stergiou | 6-3,6-2 |
| ITF Turkey F27 | 2017/07/26 07:00 | Guillermo Olaso v Milos Nikolic | 6-3,6-1 |
| ITF Turkey F27 | 2017/07/24 11:00 | Guillermo Olaso v Marvin Greven | 6-3,6-0 |
| ITF Belgium F9 | 2017/08/12 08:00 | Arnaud Graisse v Harry Butler | 6-1,6-1 |
| ITF Spain F4 | 2017/02/05 08:30 | Harry Butler v Javier Barranco Cosano | 6-2,1-6,3-6 |
| ITF Spain F3 | 2017/01/28 09:30 | Bruno Mardones v Harry Butler | 7-6,6-1 |
| ITF Spain F2 | 2017/01/24 15:05 | Harry Butler v Juan Lizariturry | 1-6,2-6 |
| ITF Spain F1 | 2017/01/16 08:30 | Daniel-Andrea R. Redondo v Harry Butler | 2-6,7-5,7-6 |