| Open de Catar - Femenino | 2018/08/23 13:10 | Ganghyeon Park v Lei Kou | L | 4-1 |
| Open de Catar - Dobles Mixtos | 2018/05/30 10:00 | Lei Kou v Sangeun Jeong | L | 1-4 |
| Open de Catar - Dobles Mixtos | 2018/05/29 07:00 | Lei Kou v Qihao Zhou | W | 4-2 |
| Open de Catar - Femenino | 2018/05/05 09:30 | Lei Kou v Noshad Alamiyan | L | 1-3 |
| Open de Catar - Femenino | 2018/05/05 08:00 | Lei Kou v Nima Alamian | W | 3-0 |
| Open de Catar - Dobles Mixtos | 2018/03/27 17:20 | Alexander Valuch v Lei Kou | W | 0-3 |
| Open de Catar - Dobles Mixtos | 2018/03/16 19:00 | Daeseong Cho v Lei Kou | L | 4-3 |
| Open de Catar - Dobles Mixtos | 2018/03/09 15:00 | Lei Kou v Chun Ting Wong | L | 1-4 |
| Open de Catar - Dobles Mixtos | 2018/09/19 13:05 | Niagol Stoyanov v Marek Badowski | L | 3-4 |
| Open de Catar - Dobles Mixtos | 2018/08/15 07:10 | Niagol Stoyanov v Yuki Matsuyama | W | 4-1 |
| Open de Catar - Dobles Mixtos | 2018/05/29 02:50 | Niagol Stoyanov v Bo Fang | L | 2-4 |
| Open de Catar - Dobles Mixtos | 2018/05/23 02:40 | Niagol Stoyanov v Jike Zhang | L | 2-4 |
| Open de Catar - Dobles Mixtos | 2018/03/15 11:50 | Sangsu Lee v Niagol Stoyanov | L | 4-2 |
| Challenger de Ochsenhausen | 2018/02/13 12:00 | Miroslav Horejsi v Niagol Stoyanov | W | 1-3 |
| Challenger de Ochsenhausen | 2018/02/13 10:40 | Niagol Stoyanov v Jiri Vrablik | L | 0-3 |
| Challenger de Ochsenhausen | 2018/02/12 20:20 | He Bai v Niagol Stoyanov | W | 1-3 |