| Belarus Int. | 2019/08/30 10:40 | Must, Raul v Leon Seiwald | L | 2-1 |
| Slovenia Int. Qual | 2019/05/15 08:30 | Leon Seiwald v B.M. Rahul Bharadwaj | L | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/21 09:10 | Setiabudi, Bobby v Leon Seiwald | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/12/13 13:45 | Enghoej, M. v Leon Seiwald | W | 0-1 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/12/13 08:30 | Grimley, Christopher v Leon Seiwald | W | 0-2 |
| Giraldilla Int. XD | 2018/11/02 09:55 | Toft, Jesper v Leon Seiwald | L | 2-1 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/27 12:10 | Savatyugin, Artyom v Leon Seiwald | W | 0-2 |
| Giraldilla Int. XD | 2018/09/22 12:45 | Heino, Iikka v Leon Seiwald | L | 2-1 |
| Croatian Int. | 2019/04/19 14:10 | Gergo Pytel v Rossi, Leo | L | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/03/07 10:10 | Klauer, Christopher v Gergo Pytel | W | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/17 12:00 | Gergo Pytel v Correl, Peter | L | 1-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/01/10 11:00 | Gergo Pytel v Taherand, K. | W | 2-1 |
| Giraldilla Int. XD | 2018/11/15 10:30 | Kim Kristensen, D. v Gergo Pytel | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/01 11:25 | Borko Petrovic v Gergo Pytel | W | 0-2 |
| Giraldilla Int. XD | 2017/04/12 12:04 | Gergo Pytel v Pringle, Ciar | W | 2-0 |