| Japan Open 2019, XD | 06/14 08:30 | 4 | Lin Y-J / Cheng I-C v Niwa K / Ito M | L | 3-1 | |
| Japan Open 2019, XD | 06/14 01:00 | 5 | Afanador B / Diaz A v Niwa K / Ito M | W | 1-3 | |
| ITTF China Open 2019, XD | 05/31 06:10 | 2 | Lin Y-J / Cheng I-C v Niwa K / Ito M | L | 3-2 | |
| ITTF China Open 2019, XD | 05/31 02:00 | 3 | Fegerl S / Polcanova S v Niwa K / Ito M | W | 0-3 | |
| ITTF China Open 2019, XD | 05/30 02:00 | 4 | Niwa K / Ito M v Pistej/Balazova | W | 3-1 | |
| République tchèque - Extraleague | 05/29 01:00 | - | Niwa K / Ito M v Apolonia T / Shao J | W | 3-0 |