| Dutch Open - Herrendoppel | 2021/10/14 11:00 | Dwi Putra/Wijaya v Sondergaard/Toft | W | 0-2 |
| Polen - Polish International - Herrendoppel | 2021/09/25 16:00 | Easton/Russ v Sondergaard/Toft | L | 2-0 |
| Polen - Polish International - Herrendoppel | 2021/09/25 13:20 | Bizjak/Maksimovic v Sondergaard/Toft | W | 0-2 |
| Polen - Polish International - Herrendoppel | 2021/09/24 10:20 | Sondergaard/Toft v Duijs/Van Der Aar | W | 2-0 |
| Dänemark - Denmark Masters - Herrendoppel | 2021/08/06 11:00 | Sondergaard/Toft v Corvee/Labar | L | 1-2 |
| Austrian Open - Herrendoppel | 2021/05/29 11:10 | Chang/Chia v Sondergaard/Toft | L | 2-1 |
| Austrian Open - Herrendoppel | 2021/05/28 15:40 | Sondergaard/Toft v Janacek/Svejda | W | 2-0 |
| Slovenia International - Herrendoppel | 2021/05/20 17:20 | Sondergaard/Toft v Arif/Haikal | L | 0-2 |
| Dutch Open - Herrendoppel | 2021/10/14 15:25 | Haase/Vlaar v Magee/Reynolds | W | 2-1 |