Stadium: Cancha 2 Round: 45 Ground: Clay
| Challenger Poznan | 2017/07/19 11:30 | Mariano Kestelboim v Ruben Ramirez-Hidalgo | 3-6,2-6 |
| Challenger Poznan | 2017/07/18 10:50 | Mariano Kestelboim v N.Sriram Balaji | 6-4,6-4 |
| ITF Poland F4 | 2017/07/08 09:00 | Alexei Popyrin v Mariano Kestelboim | 6-4,7-6 |
| ITF Poland F4 | 2017/07/07 10:40 | David Poljak v Mariano Kestelboim | 1-6,4-6 |
| ITF Poland F4 | 2017/07/06 08:00 | Manuel Pena Lopez v Mariano Kestelboim | 5-7,3-6 |
| ITF Poland F4 | 2017/07/04 14:35 | Kacper Zuk v Mariano Kestelboim | 2-6,4-6 |
| ITF Poland F3 | 2017/06/29 11:30 | Mariano Kestelboim v Ronald Slobodchikov | 2-6,4-6 |
| ITF Poland F3 | 2017/06/27 13:10 | Mariano Kestelboim v Pawel Juszczak | 5-7,6-4,6-2 |
| Challenger Braunschweig Qual | 2017/07/09 09:00 | George Von Massow v Pedro Sakamoto | 6-0,6-2 |
| Challenger Braunschweig Qual | 2017/07/08 08:00 | Ramazan Nureev v Pedro Sakamoto | 2-6,2-6 |
| Challenger Marburg Qual | 2017/07/01 13:30 | Joao Pedro Sorgi v Pedro Sakamoto | 6-3,7-5 |
| Challenger Marburg Qual | 2017/07/01 08:00 | Jan Simon Vrbsky v Pedro Sakamoto | 2-6,4-6 |
| ITF Romania F4 | 2017/06/25 08:00 | Michiel de Krom v Pedro Sakamoto | 1-6,3-6 |
| ITF Romania F4 | 2017/06/24 11:05 | Pedro Sakamoto v Sebastien Boltz | 6-2,6-2 |
| ITF Romania F4 | 2017/06/23 09:40 | Pedro Sakamoto v Claudio Fortuna | 6-0,6-3 |
| ITF Romania F4 | 2017/06/21 12:25 | Pedro Sakamoto v Dan Alexandru Tomescu | 6-2,3-6,6-3 |