| Qatar Open 2019, MS | 2018/05/03 14:30 | Chien-An Chen v Kristian Karlsson | L | 0-3 |
| Qatar Open 2019, MS | 2018/05/02 10:00 | Platonov, Pavel v Chien-An Chen | W | 1-3 |
| Qatar Open 2019, MS | 2018/05/02 08:00 | Samsonov, Vladimir v Chien-An Chen | L | 3-1 |
| Qatar Open 2019, MS | 2018/05/01 11:30 | Chien-An Chen v Mizutani, Jun | L | 0-3 |
| Qatar Open XD | 2018/03/07 14:20 | Chien-An Chen v Benedikt Duda | L | 3-4 |
| Qatar Open XD | 2018/01/20 15:20 | Chien-An Chen v Chuqin Wang | L | 0-4 |
| Qatar Open XD | 2018/01/19 17:30 | Chien-An Chen v Alvaro Robles | W | 4-3 |
| Qatar Open XD | 2018/01/18 18:10 | Chien-An Chen v Gao, Ning | W | 4-2 |
| Qatar Open 2019, MS | 2018/05/03 14:00 | Chih Yuan Chuang v Karlsson, Mattias | W | 0-3 |
| Qatar Open 2019, MS | 2018/05/01 15:30 | Karlsson, Mattias v Tokic, Bojan | W | 3-2 |
| Qatar Open 2019, MS | 2018/05/01 14:00 | Karlsson, Mattias v Darko Jorgic | W | 3-0 |
| Qatar Open 2019, MS | 2018/04/30 17:30 | Karlsson, Mattias v Timo Boll | L | 0-3 |
| Qatar Open 2019, MS | 2018/04/30 09:00 | Siu Hang Lam v Karlsson, Mattias | W | 1-3 |
| Qatar Open 2019, MS | 2018/04/29 11:30 | Hunor Szocs v Karlsson, Mattias | W | 1-3 |
| German Open 2020, WD | 2018/03/24 18:40 | Chun Ting Wong v Karlsson, Mattias | L | 4-1 |
| German Open 2020, WD | 2018/03/24 13:30 | Koki Niwa v Karlsson, Mattias | W | 1-4 |