Head to Head
| Austrian Open | 2019/11/15 16:50 | Koki Niwa v Mattias Falck | W | 4-2 |
| T2 Diamond | 2019/07/19 10:00 | Koki Niwa v Mattias Falck | L | 2-4 |
| Bulgaria Open | 2018/08/17 15:20 | Koki Niwa v Mattias Falck | W | 4-2 |
Home History
| Olympics 2020 - Men | 2021/07/27 12:30 | Koki Niwa v Dimitrij Ovtcharov | L | 1-4 |
| Olympics 2020 - Men | 2021/07/27 06:30 | Koki Niwa v Yang Wang | W | 4-0 |
| WTT Star Contender Doha | 2021/03/09 12:35 | Koki Niwa v Gustavo Tsuboi | L | 0-3 |
| Japan T League | 2020/12/24 10:30 | Koki Niwa v Kazuhiro Yoshimura | L | 0-3 |
| Japan T League | 2020/12/23 11:35 | Jun Mizutani v Koki Niwa | L | 3-2 |
| Japan T League | 2020/12/22 06:30 | Panagiotis Gionis v Koki Niwa | W | 2-3 |
| Japan T League | 2020/12/20 09:30 | Koki Niwa v Kenta Matsudaira | L | 2-3 |
| Japan T League | 2020/12/16 07:30 | Koki Niwa v Shunsuke Togami | L | 0-3 |
Away History
| Olympics 2020 - Team Men | 2021/08/03 01:30 | Jun Mizutani v Mattias Falck | W | 1-3 |
| Olympics 2020 - Team Men | 2021/08/02 01:30 | Kanak Jha v Mattias Falck | L | 3-1 |
| Olympics 2020 - Men | 2021/07/27 06:30 | Mattias Falck v Omar Assar | L | 3-4 |
| European Championships | 2021/06/27 10:10 | Mattias Falck v Timo Boll | L | 2-4 |
| European Championships | 2021/06/26 17:40 | Mattias Falck v Jon Persson | W | 4-0 |
| European Championships | 2021/06/26 11:10 | Mattias Falck v Hunor Szocs | W | 4-2 |
| European Championships | 2021/06/25 15:00 | Mattias Falck v Abdullah Yigenler | W | 4-1 |
| European Championships | 2021/06/24 15:50 | Mattias Falck v Pavel Platonov | W | 4-3 |