| Open d'Irlanda - Qual. | 2019/11/13 11:00 | Gavin Kirby v Joel Koenig | W | 0-2 |
| Internazionali d'Ungheria | 2019/10/31 12:40 | Raul Must v Joel Koenig | L | 2-0 |
| Internazionali d'Ungheria - Qual. | 2019/10/30 17:30 | Joel Koenig v Dimitar Yanakiev | W | 2-0 |
| Internazionali del Messico | 2019/09/19 17:30 | Joel Koenig v Bernardo Atilano | L | 0-2 |
| Internazionali del Belgio - Qual. | 2019/09/11 15:15 | Joel Koenig v B.M. Rahul Bharadwaj | L | 0-2 |
| Internazionali di Bielorussia | 2019/08/31 09:40 | Joel Koenig v Kartikey Gulshan Kumar | L | 0-2 |
| Hellas Open | 2019/08/09 06:30 | Adrian Dziolko v Joel Koenig | L | 2-0 |
| Peru Future Series | 2019/05/10 21:00 | Joel Koenig v Daniel La Torre Regal | L | 0-2 |
| SaarLorLux Open | 2019/10/30 16:40 | Lars Schaenzler v Collins Valentine Filimon | W | 2-0 |
| Open d'Olanda | 2019/10/09 16:20 | Yusuke Onodera v Lars Schaenzler | L | 2-0 |
| Open d'Olanda | 2019/10/08 15:55 | Lars Schaenzler v Iikka Heino | W | 2-0 |
| Open d'Olanda - Qual. | 2019/10/08 08:35 | Lars Schaenzler v Wolfgang Gnedt | W | 2-1 |
| Internazionali del Belgio - Qual. | 2019/09/11 17:00 | Christo Popov v Lars Schaenzler | L | 2-0 |
| Internazionali del Belgio - Qual. | 2019/09/11 08:40 | Yann Zaccaria v Lars Schaenzler | W | 0-2 |
| White Nights | 2019/07/11 09:30 | Lars Schaenzler v Kiran George | L | 0-2 |
| Internazionali di Spagna - Qual. | 2019/06/13 08:10 | Karan Rajan Rajarajan v Lars Schaenzler | W | 1-2 |