Home History
| Hong Kong Open | 2019/06/06 08:50 | Koki Niwa v Sathiyan Gnanasekaran | W | 4-1 |
| China Open | 2019/05/31 12:30 | Long Ma v Koki Niwa | L | 4-0 |
| China Open | 2019/05/30 08:55 | Kazuhiro Yoshimura v Koki Niwa | W | 0-4 |
| World Championship | 2019/04/26 10:45 | Jingkun Liang v Koki Niwa | L | 4-3 |
| World Championship | 2019/04/25 09:00 | Tomislav Pucar v Koki Niwa | W | 2-4 |
| World Championship | 2019/04/24 15:00 | Jakub Dyjas v Koki Niwa | W | 1-4 |
| World Championship | 2019/04/23 17:50 | Paul Drinkhall v Koki Niwa | W | 0-4 |
| World Championship | 2019/04/23 12:50 | Marcelo Aguirre v Koki Niwa | W | 1-4 |
Away History
| Hong Kong Open | 2019/06/06 08:00 | Dang Qiu v Jun Mizutani | W | 3-4 |
| China Open | 2019/05/31 12:00 | Jun Mizutani v Xin Xu | L | 0-4 |
| China Open | 2019/05/30 13:05 | Jun Mizutani v Joao Geraldo | W | 4-0 |
| World Championship | 2019/04/24 10:50 | Jun Mizutani v Youngsik Jeoung | L | 3-4 |
| World Championship | 2019/04/23 18:40 | Jun Mizutani v Can Akkuzu | W | 4-2 |
| World Championship | 2019/04/23 12:00 | Jun Mizutani v Andy Pereira | W | 4-1 |
| Qatar Open Women | 2019/03/30 07:00 | Jun Mizutani v Long Ma | L | 0-4 |
| Qatar Open Women | 2019/03/29 15:30 | Pavel Sirucek v Jun Mizutani | W | 0-4 |