| Hungarian Int. | 2021/11/04 12:20 | Jan Louda v Fabian Roth | W | 1-2 |
| Czech Open Qual | 2021/10/21 10:30 | Fabian Roth v Ludvig Petre Olsson | W | 2-1 |
| Thomas Cup | 2021/10/13 17:40 | Fabian Roth v Arnaud Merkle | L | 1-2 |
| Thomas Cup | 2021/10/11 17:40 | Rasmus Gemke v Fabian Roth | W | 0-2 |
| Thomas Cup | 2021/10/09 17:40 | Kim, Donghun (1993) v Fabian Roth | W | 1-2 |
| Sudirman Cup | 2021/09/28 07:30 | Tien Chen Chou v Fabian Roth | L | 2-1 |
| Ukraine Int. | 2021/09/08 09:40 | Stoynov, Ilyan v Fabian Roth | L | 2-1 |
| Austrian Open | 2021/05/28 14:40 | Mustofa, Ihsan Maulana v Fabian Roth | L | 2-1 |
| Hungarian Int. | 2021/11/04 13:20 | Karunaratna, D. v Gergo Pytel | W | 2-0 |
| Czech Open | 2021/10/22 15:40 | Karunaratna, D. v June Wei Cheam | L | 0-2 |
| Czech Open Qual | 2021/10/21 12:15 | Ivan Kovacevic v Karunaratna, D. | W | 0-2 |
| Bulgarian Int | 2021/10/08 14:10 | Emre Lale v Karunaratna, D. | L | 2-0 |
| Bulgarian Int | 2021/10/08 07:45 | Karunaratna, D. v Camilo Borst | W | 2-0 |
| Sudirman Cup | 2019/05/24 10:30 | Nhat Nguyen v Karunaratna, D. | L | 2-0 |
| Sudirman Cup | 2019/05/22 10:00 | Kirchmayr, Christian v Karunaratna, D. | W | 0-2 |
| Sudirman Cup | 2019/05/21 11:00 | Karunaratna, D. v Sames, Mark | W | 2-0 |