| Japon - T League - Femmes | 2020/12/16 04:00 | Kato, Miyu v Reina Aso | W | 3-0 |
| Japon - T League - Femmes | 2020/12/10 09:00 | Kato, Miyu v Miyuu Kihara | L | 1-3 |
| ITTF Finals Women | 2020/11/19 06:30 | Meng Chen v Kato, Miyu | L | 4-2 |
| Challenge Plus Oman Open 2020, WS, Qualification | 2020/03/15 11:40 | Sato, Hitomi v Kato, Miyu | L | 4-2 |
| Challenge Plus Oman Open 2020, WS, Qualification | 2020/03/15 07:40 | Kato, Miyu v Xiaoxin Yang | W | 4-0 |
| Challenge Plus Oman Open 2020, WS, Qualification | 2020/03/14 15:20 | Kato, Miyu v Barbora Balazova | W | 4-1 |
| Challenge Plus Oman Open 2020, WS, Qualification | 2020/03/14 09:25 | Kato, Miyu v Shiomi, Maki | W | 4-1 |
| Challenge Plus Oman Open 2020, WS, Qualification | 2020/03/13 13:00 | Kato, Miyu v Dutta, Moumita | W | 4-0 |
| Japon - T League - Femmes | 2020/12/20 05:00 | Miyu Nagasaki v Yu Mengyu | W | 3-2 |
| Japon - T League - Femmes | 2020/12/14 04:00 | Kyoka Idesawa v Miyu Nagasaki | W | 0-3 |
| Japon - T League - Femmes | 2020/12/10 09:00 | Nagao, Takako v Miyu Nagasaki | L | 3-2 |
| Japon - T League - Femmes | 2020/12/04 09:00 | Miyu Nagasaki v Ojio, Haruna | W | 3-0 |
| Qatar Open 2019, MS | 2020/03/05 11:00 | Miyu Nagasaki v Miu Hirano | L | 1-4 |
| Qatar Open 2019, MS | 2020/03/04 15:30 | Lily Zhang v Miyu Nagasaki | W | 1-4 |
| Hungarian Open 2020, WS, Qualification | 2020/02/20 15:50 | Adriana Diaz v Miyu Nagasaki | L | 4-2 |
| Japon - T League - Femmes | 2020/02/16 05:00 | Miyu Nagasaki v Kyoka Idesawa | L | 2-3 |