| République tchèque - Extraleague | 08/17 08:40 | 3 | Drinkhall/Pitchford v Niwa K / Ueda J | L | 3-1 | |
| République tchèque - Extraleague | 08/16 08:20 | 4 | Nuytinck C / Robinot Q v Niwa K / Ueda J | W | 2-3 | |
| Qatar Open XD | 07/27 00:00 | 3 | Niwa K / Ueda J v Jang W / Lim J | L | 1-3 | |
| Qatar Open XD | 07/26 03:20 | 4 | Niwa K / Ueda J v Kallberg A / Pistej L | W | 3-1 | |
| République tchèque - Extraleague | 07/20 01:40 | 3 | Niwa K / Ueda J v Jang W / Lim J | L | 1-3 | |
| République tchèque - Extraleague | 07/19 05:00 | 4 | Niwa K / Ueda J v Dyjas J / Robles A | W | 3-1 | |
| Qatar Open 2019, MS | 02/25 15:00 | 1 | Ma L / Xu X v Niwa K / Ueda J | L | 3-0 | |
| Qatar Open XD | 02/24 17:00 | 1 | Niwa K / Ueda J v Jeoung Y / Lee S | W | 3-2 | |
| Qatar Open XD | 02/23 19:02 | - | Lam S H / Ng P N v Niwa K / Ueda J | W | 2-3 | |
| Qatar Open XD | 02/22 19:00 | 1 | Drinkhall P / Walker S v Niwa K / Ueda J | W | 2-3 | |
| German Open 2020, MD | 11/09 17:00 | 5 | Niwa K / Ueda J v Lam S-H / Yu Z | L | 0-3 | |
| Qatar Open XD | 09/24 00:00 | 1 | Niwa K / Ueda J v Filus R / Walther R | W | 3-1 |