| Latvia Int. Qual | 2023/08/31 07:45 | Adarsh Palani Kumar v Xu, Mattias | L | 2-1 |
| Norwegian Int. Qual | 2022/11/10 15:00 | Xu, Mattias v Thomas Barth | W | 2-0 |
| Open de Slovaquie - Qualif. | 2022/03/02 12:05 | Dominik Kopriva v Xu, Mattias | L | 2-0 |
| Open de Slovaquie - Qualif. | 2020/02/26 10:55 | Xu, Mattias v Laa, Talar | L | 0-2 |
| Open de Suède - Qualif. | 2020/01/16 11:30 | Ludvig Petre Olsson v Xu, Mattias | L | 2-0 |
| Norwegian Int. Qual | 2019/11/07 11:30 | Xu, Mattias v Lehikoinen, Kasper | L | 0-2 |
| Hungarian Int. Qual | 2019/10/30 09:20 | Karl Kert v Xu, Mattias | L | 2-1 |
| Czech Open Qual | 2019/09/26 15:45 | Xu, Mattias v Ouazzen, Martin | L | 1-2 |