| Belarus Int. | 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 La Torre Regal, Daniel | L | 0-2 |
| Dutch Int. - Qualif. | 2019/04/11 14:20 | Bruno Carvalho v Joel Koenig | L | 2-1 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/17 11:00 | Ditlev Jaeger Holm v Joel Koenig | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/21 11:43 | Lane, Alex v Joel Koenig | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/21 09:54 | Joel Koenig v Pringle, Ciar | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/10/30 11:45 | Gerberich, Hannes v Joel Koenig | L | 2-0 |
| Belgian Int. Qual | 2019/09/11 11:00 | Alvaro Vazquez v B.M. Rahul Bharadwaj | W | 0-2 |
| Hyderabad Open 2019, MS | 2019/08/07 11:30 | B.M. Rahul Bharadwaj v Mithun Manjunath | L | 0-2 |
| Hyderabad Open 2019, MS, Qualification | 2019/08/06 09:55 | Imnark, Kittipong v B.M. Rahul Bharadwaj | W | 0-2 |
| Hyderabad Open 2019, MS, Qualification | 2019/08/06 04:40 | Aggarwal, Harshit v B.M. Rahul Bharadwaj | W | 0-2 |
| Slovenia Int. Qual | 2019/05/15 15:02 | B.M. Rahul Bharadwaj v Teerapat Kleawan | W | 2-0 |
| Slovenia Int. Qual | 2019/05/15 08:30 | Leon Seiwald v B.M. Rahul Bharadwaj | W | 0-2 |
| Denmark Int. Qual | 2019/05/09 15:30 | Hurskainen, Henri v B.M. Rahul Bharadwaj | W | 0-2 |
| Croatian Int. | 2019/04/21 09:00 | Max Weisskirchen v B.M. Rahul Bharadwaj | W | 1-2 |