Stadium: Court 5 Round: 25 Ground: Clay
| Challenger Augsburg | 2019/08/06 13:20 | Facundo Mena v Niklas Guttau | 6-4,7-5 |
| Challenger Augsburg | 2019/08/05 08:00 | Geoffrey Blancaneaux v Niklas Guttau | 6-4,6-1 |
| ITF M15 Parnu | 2019/07/18 07:30 | Niklas Guttau v Georgii Kravchenko | 6-2,4-6,4-6 |
| Challenger Braunschweig | 2019/07/08 08:00 | Niklas Guttau v Tobias Kamke | 5-7,4-6 |
| Challenger Braunschweig | 2019/07/07 08:00 | Guillermo Duran v Niklas Guttau | 6-7,6-7 |
| 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 Tabarka | 2019/09/16 08:30 | Fausto Tabacco v Gregorio Cordonnier | 6-4,7-5 |
| ITF M15 Tabarka | 2019/09/15 09:30 | Rhys Searant v Gregorio Cordonnier | 3-6,1-6 |
| ITF M15 Tabarka | 2019/09/11 10:15 | Zachary Eisinga v Gregorio Cordonnier | 6-2,6-3 |
| ITF M15 Tabarka | 2019/09/09 09:00 | Gregorio Cordonnier v Bjorn Nareyka | 6-4,6-2 |
| ITF M25 La Marsa | 2019/09/03 11:45 | Gregorio Cordonnier v Marco Bortolotti | 3-6,4-6 |
| ITF M25 La Marsa | 2019/09/02 11:00 | Gregorio Cordonnier v Hamza Ben Yaacoub | 6-2,7-5 |
| ITF M15 Tabarka | 2019/08/28 08:00 | Sebastian Baez v Gregorio Cordonnier | 6-2,6-2 |
| ITF M15 Tabarka | 2019/08/26 13:00 | Marco Saffratti v Gregorio Cordonnier | 5-7,6-4,13-15 |