Stadium: Court 11 Round: 166 Ground: Clay
| Challenger Campinas | 2018/09/29 13:55 | Guillermo Duran v Pedro Sakamoto | 1-6,2-6 |
| Challenger Szczecin | 2018/09/10 09:00 | Tomas Barrios Vera v Guillermo Duran | 6-7,6-1,6-3 |
| Challenger Szczecin | 2018/09/09 10:35 | Guillermo Duran v Jeroen Vanneste | 6-1,6-2 |
| Challenger Szczecin | 2018/09/08 12:15 | Guillermo Duran v Nikita Mashtakov | 7-5,5-7,7-6 |
| Challenger Bordeaux Qual | 2018/05/12 11:45 | Guillermo Duran v Sam Riffice | 2-6,6-7 |
| Challenger Aix en Provence Qual | 2018/05/06 09:00 | Guillermo Duran v Antoine Escoffier | 3-6,2-6 |
| Challenger Aix en Provence Qual | 2018/05/05 08:30 | Clement Geens v Guillermo Duran | 3-6,2-6 |
| Challenger Francavilla Qual | 2018/04/21 14:15 | Antoine Hoang v Guillermo Duran | 6-2,6-3 |
| ITF M15 Saarlouis | 2019/07/04 11:45 | Niklas Guttau v Dominik Boehler | 4-6,5-7 |
| ITF M15 Saarlouis | 2019/07/02 10:00 | Alexander Erler v Niklas Guttau | 4-6,6-4,5-7 |
| ITF M15 Kaltenkirchen | 2019/06/12 10:30 | Markus Eriksson v Niklas Guttau | 6-3,6-1 |
| ITF M15 Kaltenkirchen | 2019/06/11 18:25 | Niklas Guttau v Rinky Hijikata | 6-3,6-1 |
| ITF M15 - Antalya | 2019/05/25 07:45 | Niklas Guttau v Christopher Heyman | 5-7,2-6 |
| ITF M15 - Antalya | 2019/05/23 09:05 | Niklas Guttau v Adrian Obert | 4-6,6-4,7-6 |
| ITF M15 - Antalya | 2019/05/22 11:30 | Paul Woerner v Niklas Guttau | 1-6,2-6 |
| ITF M15 - Antalya | 2019/04/25 10:40 | Christopher Heyman v Niklas Guttau | 7-6,7-5 |