| Scottish Open Qual | 2021/11/25 15:25 | Karunaratna, D. v Ethan Rose | W | 2-1 |
| Hungarian Int. | 2021/11/05 10:30 | Fabian Roth v Karunaratna, D. | L | 2-0 |
| 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 |
| Scottish Open Qual | 2021/11/25 14:50 | Messerschmidt, Rasmus v Alex Lanier | W | 2-1 |
| Scottish Open Qual | 2021/11/25 11:55 | Messerschmidt, Rasmus v Enogat Roy | W | 2-0 |
| Dutch Open | 2021/10/14 08:20 | Jan Louda v Messerschmidt, Rasmus | L | 2-0 |
| Polish Int. | 2021/09/24 10:20 | Jan Louda v Messerschmidt, Rasmus | L | 2-1 |
| Denmark Masters | 2021/08/06 07:20 | Christo Popov v Messerschmidt, Rasmus | L | 2-0 |
| Austrian Open | 2021/05/29 16:00 | Mustofa, Ihsan Maulana v Messerschmidt, Rasmus | L | 2-1 |
| Austrian Open | 2021/05/29 09:00 | Messerschmidt, Rasmus v Christensen, Jeppe Bruun | W | 2-0 |
| Austrian Open | 2021/05/28 13:40 | Messerschmidt, Rasmus v Nikolov, Daniel | W | 2-0 |