Stadium: Court C Round: 25 Ground: Hardcourt indoor
| ITF W60 Kyoto | 2020/02/17 07:50 | Hosonuma, Chisa v Yui Chikaraishi | 7-5,7-6 |
| ITF W60 Kyoto | 2020/02/17 02:55 | Ueda, Ramu v Hosonuma, Chisa | 7-6,2-6,4-10 |
| Hamilton, Singles Qualifying W-ITF-NZL-01A | 2020/02/11 02:10 | Sohyun Park v Hosonuma, Chisa | 6-2,6-2 |
| Launceston, Singles Qualifying W-ITF-AUS-03A | 2020/02/03 00:55 | Hosonuma, Chisa v Tian, Fangran | 6-4,1-6,9-11 |
| Launceston, Singles Qualifying W-ITF-AUS-03A | 2020/02/02 02:00 | Hosonuma, Chisa v Catherine Krueger | 6-2,6-2 |
| Nonthaburi, Qualifications Simples W-ITF-THA-06A | 2019/12/01 02:30 | Mara Schmidt v Hosonuma, Chisa | 6-3,3-6,10-8 |
| Nonthaburi, Simples W-ITF-THA-06A | 2019/11/25 02:30 | Hosonuma, Chisa v Olga Helmi | 3-6,3-6 |
| Nonthaburi, Simples W-ITF-THA-06A | 2019/11/24 04:45 | Hosonuma, Chisa v Nana Kawagishi | 6-3,6-0 |
| Launceston, Singles Qualifying W-ITF-AUS-03A | 2020/02/04 01:30 | Mana Ayukawa v Fanny Stollar | 6-7,2-6 |
| Burnie, Simples W-ITF-AUS-02A | 2020/01/29 03:45 | Mana Ayukawa v Maddison Inglis | 2-6,2-6 |
| Burnie, Simples W-ITF-AUS-02A | 2020/01/27 22:45 | Haruna Arakawa v Mana Ayukawa | 7-5,3-6,5-10 |
| Burnie, Simples W-ITF-AUS-02A | 2020/01/26 23:00 | Symons, Olivia v Mana Ayukawa | 2-6,4-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2020/01/09 05:40 | Mana Ayukawa v Namigata, Junri | 3-6,2-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2020/01/08 08:30 | Kuearum, Supapitch v Mana Ayukawa | 3-6,4-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2020/01/07 02:00 | Mana Ayukawa v Kanako Morisaki | 5-7,6-0,10-2 |
| Hong Kong, Simples W-ITF-HKG-01B | 2020/01/06 02:00 | Mana Ayukawa v Jiayun Zhu | 6-2,6-3 |