| SaarLorLux Open Qual | 10/29 12:35 | - | Rudiger Gnedt v Mattias Sonderskov | L | 1-0 | |
| Latvia Int. Qual | 05/30 10:00 | - | Mattias Sonderskov v Magnus Johannesen | L | 0-2 | |
| Hellas Int. - Kval | 05/02 12:30 | - | Nicolas A. Mueller v Mattias Sonderskov | L | 2-0 | |
| Croatian Int. - Kval | 04/18 09:20 | - | Mattias Sonderskov v Borko Petrovic | L | 1-2 | |
| Dutch Int. - Kval | 04/11 07:05 | - | Robby Bronselaer v Mattias Sonderskov | W | 0-2 | |
| Swiss Open - Kvinnedouble - Kval | 02/27 07:00 | - | Luke Pearce v Mattias Sonderskov | L | 2-0 | |
| Swiss Open - Kvinnedouble - Kval | 11/28 11:30 | 1 | Andrew Heinemann v Mattias Sonderskov | L | 2-1 | |
| Swiss Open - Kvinnedouble - Kval | 04/12 10:35 | 1 | Mattias Sonderskov v Aram Mahmoud | L | 0-2 | |
| Indonesia Masters - Mixed double | 10/31 17:00 | 1 | Mattias Sonderskov v Christoph Offermann | L | 0-2 | |
| Swiss Open - Kvinnedouble - Kval | 10/31 10:00 | 1 | Thiyagarajan Purusothaman v Mattias Sonderskov | W | 0-2 |