Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF Women Makinohara | 2016/10/15 01:00 | Haruna Arakawa v Riko Sawayanagi | 2-6,2-6 |
| ITF W25 Netanya | 2022/05/25 09:15 | Lina Glushko v Haruna Arakawa | 6-4,6-1 |
| ITF W25 Akko | 2022/05/22 13:30 | Haruna Arakawa v Elena-Teodora Cadar | 6-4,6-2 |
| ITF W25 Akko | 2022/05/21 07:00 | Nicole Khirin v Haruna Arakawa | 6-7,2-6 |
| ITF W25 Akko | 2022/05/20 08:00 | Haruna Arakawa v Olivia Tjandramulia | 6-1,4-6,6-4 |
| ITF W25 Akko | 2022/05/19 07:00 | Haruna Arakawa v Pei-Chi Lee | 7-6,7-6 |
| ITF W25 Akko | 2022/05/18 10:30 | Haruna Arakawa v Diana Nekhorosheva | 6-3,6-2 |
| ITF W15 Chiang Rai | 2022/05/01 02:25 | Yexin Ma v Haruna Arakawa | 6-4,6-1 |
| ITF W15 Chiang Rai | 2022/04/30 02:00 | Lanlana Tararudee v Haruna Arakawa | 4-6,4-6 |
| ITF W25 Chiang Rai | 2022/06/01 04:05 | Riko Sawayanagi v Anastasia Sukhotina | 1-6,6-1,7-5 |
| ITF W25 Chiang Rai | 2022/05/31 05:45 | Riko Sawayanagi v Nidhi Chilumula | 6-4,6-0 |
| ITF W25 Chiang Rai | 2022/05/30 05:10 | Riko Sawayanagi v Rada Manataweewat | 6-1,6-4 |
| ITF W15 Antalya | 2022/04/20 07:00 | Eva Garkusha v Riko Sawayanagi | 6-2,4-6,6-2 |
| ITF W15 Antalya | 2022/04/12 11:00 | Riko Sawayanagi v Natalia Szabanin | 1-6,1-6 |
| ITF W25 Antalya | 2022/03/28 07:00 | Riko Sawayanagi v Marta H Gonzalez Encinas | 0-6,4-6 |
| ITF W25 Antalya | 2022/03/27 07:00 | Riko Sawayanagi v Javiera Verdugo | 6-1,6-1 |
| ITF W25 Antalya | 2022/03/22 07:00 | Riko Sawayanagi v Barbara Dessolis | 6-3,3-6,8-10 |