| Giraldilla Int. XD | 2018/08/11 06:30 | Ajay Jayaram v Yu Igarashi | L | 2-0 |
| Giraldilla Int. XD | 2018/08/10 10:20 | Hsuan Yi Hsueh v Yu Igarashi | W | 0-2 |
| Giraldilla Int. XD | 2018/08/09 07:40 | Yu Igarashi v Yu Hsien Lin | W | 2-0 |
| Giraldilla Int. XD | 2018/08/08 07:10 | Yu Igarashi v Firman Abdul Kholik | W | 2-1 |
| Giraldilla Int. XD | 2018/07/28 04:20 | Yu Igarashi v Ihsan Maulana Mustofa | L | 1-2 |
| Giraldilla Int. XD | 2018/07/27 02:30 | Yu Igarashi v Minoru Koga | W | 2-1 |
| Giraldilla Int. XD | 2018/07/26 05:15 | Hashiru Shimono v Yu Igarashi | W | 0-2 |
| Giraldilla Int. XD | 2018/07/25 04:10 | Naohiro Matsukawa v Yu Igarashi | W | 0-2 |
| All England Open | 2018/07/31 09:40 | Kai Schaefer v Hans-Kristian Vittinghus | L | 1-2 |
| Swiss Open WD Qual | 2018/07/17 00:55 | Kai Schaefer v Firman Abdul Kholik | L | 1-2 |
| Giraldilla Int. XD | 2018/06/20 19:40 | Sitthikom Thammasin v Kai Schaefer | L | 2-0 |
| Giraldilla Int. XD | 2018/06/20 01:00 | Kevin Cordon v Kai Schaefer | W | 0-2 |
| US Open | 2018/06/13 23:40 | Xiaodong Sheng v Kai Schaefer | L | 2-1 |
| Indonesia Masters XD | 2018/05/23 03:00 | Wing Ki Vincent Wong v Kai Schaefer | L | 2-1 |
| Indonesia Masters XD | 2018/05/22 03:00 | Kenta Nishimoto v Kai Schaefer | L | 2-1 |
| Indonesia Masters XD | 2018/05/20 12:00 | Tien Chen Chou v Kai Schaefer | L | 2-0 |