| Austrian Open 2019, MD | 11/13 14:10 | - | Dyjas/Nuytinck v Harimoto T / Niwa K | L | 3-0 | |
| Australian Open 2019, MD | 07/11 02:40 | 4 | Harimoto T / Niwa K v Franziska P / Walther R | L | 2-3 | |
| Korea Open 2019, MD | 07/05 02:15 | 4 | Jeoung Y / Lee S v Harimoto T / Niwa K | L | 3-1 | |
| Korea Open 2019, MD | 07/04 03:40 | 5 | An J / Cho S v Harimoto T / Niwa K | W | 2-3 |