| Osaka Int. | 2019/04/04 01:20 | Pengbo Ren v Minoru Koga | L | 2-0 |
| Tong Yun Kai Cup | 2019/03/21 12:00 | Minoru Koga v Ka Long Angus NG | L | 1-2 |
| Giraldilla Int. - Mixed dubbel | 2019/02/24 07:00 | Minoru Koga v Kodai Naraoka | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2019/02/23 07:20 | Minoru Koga v Kantawat Leelavechabutr | W | 2-0 |
| Giraldilla Int. - Mixed dubbel | 2019/02/22 06:40 | Minoru Koga v Yee Han Chong | W | 2-1 |
| Giraldilla Int. - Mixed dubbel | 2019/02/21 06:10 | Minoru Koga v Phakorn Chotphinit | W | 2-0 |
| Swedish Open | 2019/01/20 12:00 | Minoru Koga v Kean Yew Loh | W | 2-0 |
| Swedish Open | 2019/01/19 17:00 | Minoru Koga v Eetu Heino | W | 2-0 |
| Finnish Open | 2019/04/06 08:00 | Chun-Yi Lin v Sergey Sirant | L | 2-0 |
| Orleans Masters | 2019/03/19 19:20 | Sergey Sirant v Alex Lane | L | 0-2 |
| Estonian Int. | 2019/01/12 09:00 | Sergey Sirant v Arnaud Merkle | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/12/14 16:00 | Sergey Sirant v Nhat Nguyen | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/11/21 08:00 | Sai Praneeth B. v Sergey Sirant | L | 2-0 |
| Giraldilla Int. - Mixed dubbel | 2018/08/08 10:25 | Xiaodong Sheng v Sergey Sirant | L | 2-0 |
| Giraldilla Int. - Mixed dubbel | 2018/08/08 01:30 | Fikri Ihsandi Hadmadi v Sergey Sirant | W | 0-2 |
| All England Open | 2018/08/01 02:50 | Kenta Nishimoto v Sergey Sirant | L | 2-0 |