Stadium: Ochsenhausen, Germany
| ITTF Pan American Championships | 2023/09/10 18:30 | Matthew Lehmann v Adrian Perez | L | 0-4 |
| Polish Open | 2020/03/12 14:00 | Matthew Lehmann v Jaroslaw Tomicki | L | 0-3 |
| Polish Open | 2020/03/11 14:20 | Matthew Lehmann v Rafael Turrini | L | 1-3 |
| Czech Republic First League | 2020/03/08 10:58 | Matej Stach v Matthew Lehmann | L | 3-2 |
| Czech Republic First League | 2020/03/08 10:15 | Vojtech Klimek v Matthew Lehmann | L | 3-2 |
| Czech Republic First League | 2020/02/23 11:23 | Matthew Lehmann v Tomas Koldas | L | 2-3 |
| Czech Republic First League | 2020/01/25 10:47 | Lukas Boruvka v Matthew Lehmann | W | 0-3 |
| North American Open | 2019/12/05 21:55 | Beixun Zeng v Matthew Lehmann | L | 4-0 |
| Europe Cup | 2024/01/30 18:20 | Jiri Martinko v Olav Kosolosky | L | 3-0 |
| Europe Cup | 2024/01/30 17:00 | Andreas Levenko v Olav Kosolosky | L | 3-1 |
| Europe Cup | 2024/01/28 18:15 | Olav Kosolosky v Maciej Kolodziejczyk | L | 0-3 |
| Oman Open U21 Women | 2021/11/13 10:00 | Bastian Rembert v Olav Kosolosky | L | 4-0 |
| Oman Open U21 Women | 2021/11/12 12:30 | Jakub Zelinka v Olav Kosolosky | W | 1-4 |
| Oman Open U21 Women | 2021/11/11 16:25 | Olav Kosolosky v Filip Radovic | W | 4-0 |
| Oman Open U21 Women | 2021/11/11 13:05 | Cedric Meissner v Olav Kosolosky | L | 3-2 |
| Oman Open U21 Women | 2021/11/10 19:40 | Olav Kosolosky v Filip Radulovic | W | 4-0 |