Head to Head
| Qatar Open XD | 2016/11/11 14:20 | Koki Niwa v Samuel Walker | W | 4-2 |
Home History
| Qatar Open Women | 2018/04/30 08:30 | Pavel Platonov v Koki Niwa | W | 2-3 |
| Qatar Open Women | 2018/04/29 15:00 | Cedric Nuytinck v Koki Niwa | W | 0-3 |
| German Open WD | 2018/03/24 13:30 | Koki Niwa v Mattias Karlsson | L | 1-4 |
| German Open WD | 2018/03/23 19:20 | Koki Niwa v Jin Ueda | W | 4-2 |
| Qatar Open | 2018/03/08 13:30 | Sharath Kamal Achanta v Koki Niwa | L | 4-1 |
| Qatar Open Women | 2018/02/25 16:00 | Long Ma v Koki Niwa | L | 3-1 |
| Qatar Open XD | 2018/02/24 17:40 | Koki Niwa v Youngsik Jeoung | L | 1-3 |
| Qatar Open XD | 2018/02/23 20:30 | Chun Ting Wong v Koki Niwa | L | 3-1 |
Away History
| Qatar Open Women | 2018/04/29 16:00 | Samuel Walker v Aliaksandr Khanin | W | 3-1 |
| Qatar Open XD | 2018/04/14 07:20 | Ning Gao v Samuel Walker | L | 4-0 |
| Qatar Open XD | 2018/04/09 05:05 | Bode Abiodun v Samuel Walker | L | 3-2 |
| Qatar Open XD | 2018/03/06 09:40 | Samuel Walker v Joe Seyfried | W | 4-1 |
| Qatar Open XD | 2018/02/24 12:40 | Long Ma v Samuel Walker | L | 3-0 |
| Qatar Open XD | 2018/02/23 13:30 | Mohamed El-Beiali v Samuel Walker | W | 0-3 |
| Qatar Open XD | 2017/10/07 15:50 | Samuel Walker v Kirill Gerassimenko | L | 2-4 |
| Qatar Open XD | 2017/10/06 15:35 | Andrea Landrieu v Samuel Walker | W | 1-4 |